- SPECTRA BOARDS
		- Command Board
			- P501 Option Connector
			- MLM Connector
		- Remote Mount Interconnect Board
			- J5 Radio Connector (Not Including Motorcycle and HHCH)
			- Early J5 Radio Connector (Not Including Motorcycle and HHCH)
			- Motorcycle J5 Radio Connector
			- HHCH J5 Radio Connector
			- J6 Radio Connector
			- P506 Radio Securenet Keyloader Connector
			- P502 Interconnect Board Connector
		- Pushbutton & Rotary Control Head Boards
			- P103 & P104 Control Head Connectors
				- Very Early P103 Control Head Connector
				- Early P103 Control Head Connector
				- Later P103 Control Head Connector
				- P104 Microphone Connector
			- J1 & P100 Control Head Connectors
			- J1 DEK Connector
	- SPECTRA HOME
	- HOME

Command Board:

The Command board is the "brains" of the entire radio drawer. It includes the microprocessor, memory, audio processing, audio speaker amplifier, etc. The Spectra and Spectra II command boards are very different. This page only covers the Spectra command boards.

Spectra command board documentation for the older HLN6024, HLN6062, HLN6064, HLN6074 and the later HLN6094A boards can be found in the 6880101W33 Detailed Service Manual. The HLN6094B command board documentation can be found in the 6880102W61 Detailed Service Manual.

Spectra II command board documentation can be found in the 6881077C40 Spectra E Detailed Supplement.

The P501 option connector is for Internal Securenet and Internal Options.

12	11	10	9	8	7	6	5	4	3	2	1
13	14	15	16	17	18	19	20	21	22	23	24

P501 connector pin out, viewed from the top of the Command Board (pin 1 is closest to the front corner of the radio drawer).

Spectra P501 Radio Internal Option Connector
Radio P501 Pin #	Radio Pin Description
1	Securenet Reset/Load / DTMF Load (Input)
2	Expandor Input (Input)
3	Securenet Write Enable / PTT in SP customer applications (Input)
4	Ground
5	Securenet Squelch Out / DTMF Data (Output)
6	Mic Hi / Compressor Input (Input)
7	Expandor Output (Output)
8	Option Rx Audio (Output)
9	Option Tx Audio (Output)
10	Data In (Input)
11	Detected Audio (Input)
12	Securenet KID / Detected Audio in SP customer applications (Input)
13	Unswicthed + 5 Volts (Input)
14	Securenet Keyload / Keyfail / Option Tx Audio in SP customer applications
15	Ground
16	Option Input / (RPCIC Enable Output on older boards)
17	Clock (Input)
18	Flutter Fighter / PA Out (Output)
19	Compressor Out (Output)
20	Securenet Rx-Squelch / DTMF Digit Valid (Output)
21	RSSI (Input)
22	Switched + 5 Volts (Input)
23	Switched + 9.6 Volts (Input)
24	Option Latch Enable (Input)

• The input and output notes in parenthesis are with respect to the option board plugged into P501.
• The Internal Securenet and Internal Options all use the P501 connector. Only one circuit board can be plugged into P501. Some circuit boards like the HLN6150A Hear Clear have additional copper traces to support additional options like DTMF on SP versions of the Hear Clear board.
• The Flutter Fighter, Compressor and Expandor connections are specifically for the 900 MHz Hear Clear option board.
• P501 pin 16 is Option Input on the HLN6094 Command Boards. P501 pin 16 is RPCIC Enable Output on the previous HLN6024, HLN6062, HLN6064 and HLN6074 Command Boards.
• Some of the above pins have more than one use, depending on which option board is plugged in.
• The radio's code plug must allow any installed options to be enabled using the RSS. If the code plug will not allow the option, then you can not use it.

40	39	38	37	36	35	34	33	32	31	30	29	28	27	26	25	24	23	22	21
1	2	3	4	5	6	7	8	9		11	12	13	14	15	16	17	18	19	20

The HLN6094 Command Board J505 pin out, viewed from the top of the Command Board under the MLM shield (use the missing pin 10 to orient the pin out).

The early HLN6024, HLN6062, HLN6064 and HLN6074 Command Boards and MLM boards use a different 37 pin connector that is NOT shown.

The MLM is only used by the Spectra radios, not the Spectra II radios. It contains the RAM, PROM and EEPROM memory chips.

Spectra J505 MLM Connector for HLN6094 Command Board
Radio J505 Pin #	Radio Pin Description
1	N.C.
2	Address 9 (Input) - RAM
3	Address 7 (Input)
4	Address 6 (Input)
5	Output Enable (Input) - Inverted active state - PROMs
6	Address 12 (Input)
7	Address 11 (Input)
8	Address 4 (Input)
9	Address 8 (Input)
10	KEYED-SLOT
11	Address 2 (Input)
12	Address 15 (Input)
13	Unswitched Filtered + 5 Volts (Input)
14	Ground
15	Data 1 (Input/Output)
16	Data 2 (Input/Output)
17	Data 4 (Input/Output)
18	Data 6 (Input/Output)
19	EE1 Chip Select (Input) - Inverted active state - EEPROM chip select
20	Read/Write (Input) - Write is an Inverted active state
21	Data 7 (Input/Output)
22	RAM Chip Select (Input) - Inverted active state
23	PROM Chip Select (Input) - Inverted active state
24	Data 5 (Input/Output)
25	Data 3 (Input/Output)
26	Address 0 (Input)
27	Address 1 (Input)
28	Data 0 (Input/Output)
29	Unswitched Filtered + 5 Volts (Input)
30	Address 14 (Input)
31	Address 3 (Input)
32	Address 9 (Input) - EEPROM and PROM
33	Address 10 (Input)
34	Address 13 (Input)
35	Output Enable (Input) - Inverted active state - EEPROM and RAM
36	Address 5 (Input)
37	EE2 Chip Select (Input) - Inverted active state - Only used for optional EEPROM
38	Address 16 (Input)
39	Address 17 (Input)
40	Load/Shift (Input) - pin 27 of microprocessor U502 - N.C. on the MLM board

• The input and output notes in parenthesis are with respect to the MLM board.
• The EE1 PROM Chip Select line goes straight to the EEPROM pin 23 chip enable.
• The EE2 PROM Chip Select line is for an optional MLM configuration. The EE2 PROM Chip Select line goes to an optional jumper. The second PROM pin 23 chip enable is connected to the 16 pin chip pin 9 and the other side of the optional jumper. If the 16 pin chip is installed and the jumper is not installed, then the chip on the edge farthest away from the MLM board connector is a second PROM (this is normal for most MLMs). If the 16 pin chip is not installed and the jumper is installed, then the chip on the edge farthest away from the MLM board connector is an optional second EEPROM. The radio needs special firmware to be able to use this optional second EEPROM. In fact it may have never actually been used at all.
• The PROM Chip Select goes to the 16 pin chip pins 4, 5, 6 and 13, as well as an optional jumper. If the 16 pin chip is installed and the jumper is not installed, then the PROM Chip Select is handled by the 16 pin chip. If the 16 pin chip is not installed and the jumper is installed, then the PROM PROM Chip Select is jumpered directly to the PROM pin 23 chip enable. The PROM pin 23 chip enable is wired to the other side of the jumper and the 16 pin chip pin 7.
• The RAM Chip Select goes to the RAM chip enable pin 20.
• The Read/Write line is connected to the RAM pin 27 and the EEPROM pin 31. An optional jumper will also connect this line to the first PROM pin 31 and second PROM pin 31 or second optional EEPROM pin 31.
• The Output Enable on pin 5 goes to a jumper. When the jumper is installed (this jumper is normally installed) this Output Enable goes on to both PROMs on pin 25 (the optional jumper for the other Output Enable pin 35 is removed).
• The Output Enable on pin 35 goes to the EEPROM pin 25, the RAM pin 22 and an optional jumper. When the optional jumper is installed and the PROM Output Enable pin 5 jumper is removed, the Output Enable pin 35 also goes to both PROMs.
• BTW, the 28C64 EEPROM is 8k bytes and the 27C512R PROM is 64k bytes of memory.
• The radio drawer microprocessor only has 16 address lines (Address 0 through Address 15), plus only Read/Write and Output Enable are used for the memory control interface. This means that Address 16, Address 17, PROM Chip select, EE1 Chip Select, EE2 Chip Select and RAM Chip Select are a result of "memory management". The "memory management" is created by programming in the microprocessor combined with hardware in the SLIC (U521) chip. Memory management allows the microprocessor to access and use lots more memory then the 64k byte limit supported by its 16 address lines.
• The 16 pin chip is a 74HC153, dual 4 input to 1 output multiplexer. Address 15 is the multiplexer A select and Address 17 is the B select. Only when both Address 15 and Address 17 are both active, then the second PROM is selected. When either Address 15 or Address 17 is not active, then the first PROM is selected. The second PROM uses the Address 16 line for its A15 input because Address 15 is already in use to select the second PROM chip (see the memory management notes above). Keep in mind, the 16 pin chip is only installed when two 27C512R PROM chips are installed on the MLM board. When the 16 pin chip is not installed, there are optional jumpers that are installed to make the PROM select connection for the remaining PROM.
• Because HTML does not do a good job with placing a bar above text, the pins know to have an inverted active state (i.e. logic low) have been pointed out above.
• This pin out may be of interest for people wanting to make their own custom interface adaptor for a PROM programmer and the MLM.
• Pin 39 can also be "A3 VIP Latch Enable". However, this function appears to only be used in conjunction with Command Board jumper JU506 and an HHCH Interface Board, not the MLM board connector. Since the HHCH has a special MLM board and programming, no problems are created by using pin 39 for something other than Address 17 (the HHCH MLM probably only has one PROM on it, so it does not need the 16 pin chip or Address 17).

Remote Mount Interconnect Board:

The remote mount Interconnect Board ties the Command Board P502 connector to the J5, optional J6 and optional P506 cable connectors.

J5 connector viewed from the front of the radio drawer.

Spectra Remote Mount J5 Radio Connector (Not Including Motorcycle and HHCH)
Radio DB-25 J5 Pin #	Radio Pin Description
1	PTT (Input)
2	Filtered Audio Shield
3	Ignition (Output)
4	No Connection
5	Bus + (RS-422 Input/Output)
6	Filtered Audio (Output)
7	Option Rx Audio (Input)
8	Option Tx Audio (Input)
9	Detected Audio (Output)
10	Analog Ground
11	Mic. Low
12	Mic. Hi (Input)
13	Emergency (Input)
14	Bus - (RS-422 Input/Output)
15	RSSI (Input)
16	Spare 1
17	Spare 2
18	Digital Ground
19	Reset (Input/Output)
20	A+ (Output)
21	Bus Shield
22	Switched B+ (Input)
23	Busy (Input/Output)
24	Speaker Audio Low (Output)
25	Speaker Audio Hi (Output)

• The input and output notes in parenthesis are with respect to the radio drawer.
• SP version radios can have different J5 pin outs.

Early HLN6055/HLN6077 Spectra Remote Mount J5 Radio Connector (Not Including Motorcycle and HHCH)
Radio DB-25 J5 Pin #	Radio Pin Description
1	SP Out 1 (Output) VIP Out 1 or Ignition
2	SP Out 2 (Output) VIP Out 2
3	Securenet KID (Input) / Detected Audio in SP Customer Applications
4	Securenet Write Enable (Input) / PTT in SP Customer Applications
5	Bus + (RS-422 Input/Output)
6	No Connection (HLN6077 - Filtered Audio)
7	No Connection (HLN6077 - Option Rx Audio)
8	No Connection (HLN6077 - Option Tx Audio)
9	No Connection (HLN6077 - Detected Audio)
10	No Connection (HLN6077 - Analog Ground)
11	Mic. Low
12	Mic. Hi (Input)
13	Emergency (Input)
14	Bus - (RS-422 Input/Output)
15	Securenet Key (Input) / Tx Audio in SP Customer Applications
16	Spare 1
17	Spare 2
18	Digital Ground
19	Reset (Input/Output)
20	A+ (Output)
21	Bus Shield
22	Switched B+ (Input)
23	Busy (Input/Output)
24	Speaker Audio Low (Output)
25	Speaker Audio Hi (Output)

• The HLN6055 is a very early circuit board that was replaced by the HLN6077 Interconnect Board. There are some differences in the HLN6077 pin out that are indicated in blue above.
• This early Remote Mount J5 connector is created by first installing a Dash Mount J103 HLN6058 or HLN6066 Interconnect Board to P502, then installing the Remote Mount J5 HLN6055 Interconnect Board on top of the Dash Mount HLN6058 or HLN6066 to P103. It is actually a combination of two Interconnect Boards. This combination of dash and remote mount Interface Boards ends up making a P502 to an intermediate J103/P103 connection and finally to the J5 connector.
• I suspect the early 1580294L01 radio remote mount front plastic may have been specifically for the HLN6055 Interconnect Board.
• The HLN6055 plugging into the HLN6058 or HLN6066 Interconnect Boards explains why these early HLN6058/HLN6066 dash mount boards made these otherwise strange J103 pin assignments:
  J103 pin 1 - Speaker Hi
  J103 pin 2 - Speaker Lo
  J103 pin 24 - Bus Shield Ground
  J103 pin 28 - Emergency
  All of the above J103 pins are not connected in the very early and early control heads, but were used for different functions in the later control heads (long after the HLN6055 was replaced by the one piece remote mount HLN6077 Interconnect Board, which does not depend on any strange J103 connections). There is a modification to use a HLN6058 or HLN6066 with a later version control head.

J5 connector viewed from the front of the radio drawer.

Motorcycle Spectra Remote Mount J5 Radio Connector
Radio DB-25 J5 Pin #	Radio Pin Description
1	SP 1 Out (Output)
2	SP 2 Out - N.C.
3	Securenet KID (Input)
4	Securenet Write Enable (Input)
5	Bus + (RS-422 Input/Output)
6	Filtered Audio (Output)
7	Option Rx Audio (Input)
8	Option Tx Audio (Input)
9	Detected Audio (Output)
10	Analog Ground
11	Mic. Low
12	Mic. Hi (Input)
13	Emergency (Input)
14	Bus - (RS-422 Input/Output)
15	Securenet Key (Input)
16	HUB 1
17	Spare 2
18	Digital Ground
19	Reset (Input/Output)
20	A+ (Output)
21	Bus Shield
22	Switched B+ (Input)
23	Busy (Input/Output)
24	Speaker Audio Low (Output)
25	Speaker Audio Hi (Output)

• The input and output notes in parenthesis are with respect to the radio drawer.
• Pin1 SP 1 Out can be VIP Out 2, Switches +5 Volts, Ignition, Unswitched +5 Volts or Channel Activity depending on the internal jumper settings.
• SP version radios can also have other different J5 pin outs.

J5 connector viewed from the front of the radio drawer.

HHCH Spectra Remote / Dash Mount J5 Radio Connector
Radio DB-25 J5 Pin #	Radio Pin Description
1	Data In (Input)
2	On/Off (Input)
3	Volume (Input)
4	PTT (Input)
5	Bus + (RS-422 Input/Output)
6	Data Out (Output)
7	Clock (Output)
8	Option Tx Audio (Input)
9	Detected Audio (Output)
10	Switched +5 Volts (Output)
11	Mic. Low
12	Mic. Hi (Input)
13	Emergency (Input)
14	Bus - (RS-422 Input/Output)
15	Switched +5 Volts (Output)
16	VIP Out 1
17	HUB
18	Digital Ground
19	Load/Shift (Output)
20	Speaker Audio Hi (Output)
21	Ignition (Output)
22	Switched B+ (Input)
23	Busy (Input/Output)
24	Speaker Audio Low (Output)
25	A+ (Output)

• The input and output notes in parenthesis are with respect to the radio drawer.
• The HHCH J5 radio pin out is completely different from and incompatible with any other control head.
• The high power HHCH J6 connector has a standard pin out.
• Some Interconnect Board schematics refer to J5 as J1 instead and others only refer to J5. The J5 designation is used here.
• SP version radios can have different J5 pin outs.

J6 connector viewed from the front of the radio drawer.

Spectra J6 Remote Mount Radio Option Connector
Radio DB-25 J6 Pin #	Radio Pin Description
1	PTT (Input)
2	Filtered Audio Shield
3	Ignition (Output)
4	No Connection
5	Bus + (RS-422 Input/Output)
6	Filtered Audio (Output)
7	Option Rx Audio (Input)
8	Option Tx Audio (Input)
9	Detected Audio (Output)
10	Analog Ground
11	Mic. Low
12	Mic. Hi (Input)
13	Analog Ground / SP Emergency (Input)
14	Bus - (RS-422 Input/Output)
15	RSSI (Input)
16	Spare 1
17	Spare 2
18	Digital Ground
19	Reset (Input/Output)
20	A+ (Output)
21	Bus Shield
22	Switched B+ (Input)
23	Busy (Input/Output)
24	Speaker Audio Low (Output)
25	Speaker Audio Hi (Output)

• The input and output notes in parenthesis are with respect to the radio drawer.
• The HLN6261B Interconnect Board leaves J6 pins 2, 5, 6, 14, 19, 23 unconnected.
• SP version radios can have different J6 pin outs.

P506 connector pin out, viewed from the front of the radio drawer.

Spectra Securenet P506 Remote Mount Radio Connector
Radio P506 Pin #	Radio Pin Description
1	Ground
2	Securenet Write Enable (Input)
3	Ground
4	Ground
5	Ground
6	Ground
7	Ground
8	Ground
9	Securenet KID (Input)
10	Securenet Key (Input)

• The input and output notes in parenthesis are with respect to the radio drawer.
• The P506 Securenet connector is only found on secure remote mount Interconnect Boards. The P506 physical pin layout matches the P104 microphone front connector pin layout found on some control heads (the microphone signal lines, pins 3 through 8, are missing on the P506 connector).
• The P506 Securenet connections only work on a radio with an Internal Securenet option board inside the radio drawer.
• Different P104 Securenet Keyloader Port connections can be found on some dash mount control heads. The Securenet Physical Security Housing has its own unique connector.

20	21	22	23	24	25	26	27	28	29	30	31		33	34	35	36	37	38
19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1

P502 connector pin out, pin side, viewed from the side of the Interconnect Board facing the radio drawer.

38	37	36	35	34	33		31	30	29	28	27	26	25	24	23	22	21	20
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19

P502 connector pin out, solder side, viewed from the front of the radio drawer. The key to identifying the correct physical pin out is to identify the missing pin 32.

Spectra P502 Interconnect Board Connector
Radio P502 Pin #	Radio Pin Description
1	Switched + 9.6 Volts (Output)
2	RSSI (Input) / A3 Volume / Battery Storage N.C.
3	Emergency (Input)
4	Channel Activity (Output)
5	Filtered Audio (Output)
6	Mic. Hi (Input)
7	Mic Low
8	Option Rx Audio (Input) / Ground
9	Busy (Input/Output)
10	Analog Ground
11	Reset (Input/Output)
12	Option Tx Audio (Input)
13	Detected Audio (Output)
14	Spare 1 / A2 Disable / A3 VIP Out (Output)
15	Securenet Write Enable (Input)
16	Securenet KID (Input)
17	VIP Out 2 / HUB
18	VIP Out 1
19	Rx Data
20	Tx Data
21	Ignition (Output)
22	Bus - (RS-422 Input/Output)
23	Securenet Key (Input)
24	PTT (Input)
25	Bus + (RS-422 Input/Output)
26	Data Out (Output) / Ground
27	Spare 2 / A2 Display Enable / A3 Load/Shift
28	Digital Ground
29	Carrier Detect / A2 Data / A3 Data In / Opt. Spare
30	A+ (Output)
31	Switched B+ (Input)
32	KEYED-SLOT
33	Clock (Output) / Ground
34	Speaker Audio Low (Output)
35	Speaker Audio Hi (Output)
36	Unswitched + 5 Volts (Output)
37	Switched + 5 Volts (Output)
38	VAG (Output)

• The input and output notes in parenthesis are with respect to the radio drawer Command Board.
• The HLN6024, HLN6062, HLN6064 and HLN6074 Command Board pin out diferences are show in blue. These Command Boards do not support the single radio drawer HHCH.
• P502 is the radio's connection to the different Interconnect Boards. The Interconnect Board has the J5 DB-25 connector found on the front of the remote mount radios and HHCH radios (some also have the J6 DB-25). The dash mount radios with the A2, B2, C2, E2, A4, B4, C4, E4, A5, B5, C5, E5, A7, B7, C7 or E7 control heads have the control head plug directly into the Interconnect Board, which is plugged into P502.
• SP version radios can have different P502 pin outs.
• Pin 21 Ignition is merely a pass through from the radio's rear J2 DB-15 connector on its way to the control head. There is an optional Command Board jumper that will connect this pin directly to switched B+. The high power radios have no rear J2 connector, but they can use the optional jumper, if desired.

Pushbutton & Rotary Control Head Boards:

The B2, C2, E2, A4, B4, C4, E4, A5, B5, C5, E5, A7, B7, C7 or E7 Control Head Board P103 connector cables into the Interconnect Board remote mount J5, plugs into the HLN6432 Systems 9000 connector converter board or plugs into the Interconnect Board dash mount connector.

The Systems 9000 A9, B9, C9 or E9 Control Head Board J1 or P100 connector cables into the Interconnect Board remote mount J5. The optional Systems 9000 DEK J1 connector cables into the Control Head J1 or P100 connector.

14	13	12	11	10	9	8	7	6	5	4	3	2	1
15	16	17	18	19	20	21	22	23	24	25		27	28

P103 connector pin out (above), viewed from the back of the control head. The key to identifying the correct physical pin out is to identify the missing pin 26.

P104 connector pin out (above), viewed from the front of the control head (pins 1, 2, 9 and 10 are different in the very early version control head circuit boards).

Spectra P103 & P104 Control Head Connectors
Control Head Rear P103 Pin #	Very Early Front Mic. P104 Pin #	Front Mic. P104 Pin #	Control Head Pin Description
1			VF Sense 1 / (N.C. Very Early and Early Versions)
2			VF Sense 2 / (N.C. Very Early and Early Versions)
3	7	7	Mic Lo
4	4	4	Switched B+
5			A+
6	5	1, 5	Ground (P104 Pin 1 N.C. in Very Early Versions)
7			Spare 2 / (N.C. Very Early Versions) / (VF Sense 2 Early Versions)
8			Spare 1 / (N.C. Very Early Versions) / (VF Sense 1 Early Versions)
9		10	Securenet Key / (Both Pins N.C. Very Early Versions)
10	2		Bus - (RS-422 Input/Output) (P104 Pin 2 Only in Very Early Versions)
11			Ignition
12			Switched B+
13	5	1, 5	Ground (P104 Pin 1 N.C. in Very Early Versions)
14			VIP Out 3
15			VIP In 3
16			VIP In 2
17			VIP In 1
18			VIP Out 1
19			VIP Out 2
20		9	Securenet KID / (Both Pins N.C. Very Early Versions)
21		2	Securenet Write Enable / (Both Pins N.C. Very Early Versions)
22	9		Bus + (RS-422 Input/Output) (P104 Pin 9 Only in Very Early Versions)
23			Reset (Input/Output)
24	6	6	PTT / (Pin 24 N.C. Very Early and Early Versions)
25	10		Busy (Input/Output) (P104 Pin 10 Only in Very Early Versions)
26			Keyed Slot
27	8	8	Mic Hi
28	3	3	Hang Up Box (HUB) / (Pin 28 N.C. Very Early and Early Versions)

• N.C. is an abbreviation for No Connection.
• The input and output notes in parenthesis are with respect to the control head.
• To simply the above pin out notes here is a VERY EARLY, EARLY and LATER P103 pin out. Here is a simplified P104 pin out.
• The B2, C2, E2, A4, B4, C4, E4, A5, B5, C5, E5, A7, B7, C7 or E7 control head uses the above pin out on its rear connector.
• P103 mates directly with the original style 3080157M01, 3080157M04, HKN6062A, HKN6036A or HKN6037A cable, or P103 mates with the remote mount HLN6432 Systems 9000 connector converter board, or P103 mates directly with a pushbutton or rotary (i.e. not HHCH) dash mount Interconnect Board.
• The pins that have different pin outs depending on the age of the control head circuit board design are highlighted in yellow (see below).
• All revisions of the HLN6020 and HLN6078 circuit boards are the very early versions. The HLN6075 revisions A, B, C and D are the early versions. The HLN6263, HLN6283, HLN6337, HLN6338, AALN4009 and AALN4015 are the later control head circuit board versions.
• The very early version circuit boards do not have any Securenet Keyloader Port connections, they use a different front microphone connector pin out with the Systems 9000 serial data bus pins instead and have no VF Sense or Spare lines.
• The very early and early versions do not support the rear microphone connection on the HLN6432 Systems 9000 connector converter board (the essential PTT and HUB lines do not go through to the rear connector).
• If present, the above three Securenet connections are routed to the control head front microphone connector. These control head Securenet connections only work on a dash mount radio with a secure Interconnect Board and an Internal Securenet option board inside the radio drawer. The remote mount radios with an Internal Securenet option board inside the radio drawer use the P506 connector (the remote mount cables do not carry the Securenet Keyloader Port lines to the control head). The Securenet Physical Security Housing has its own different Securenet connector.
• When the original style HKN6036A / HKN6037A cables are used with a Physical Security Housing, P103 pins 1 and 2 are not used. Optional later version control head circuit board jumpers are used to connect VF Sense P103 pins 1 an 2 into Spare P103 pins 8 and 7. The Spare pins are not usable as spare lines. The very early control head versions do not work (i.e. no VF Sense).
• When the Systems 9000 HKN6059A / HKN6060A cables are used with a Physical Security Housing, P103 pins 1 and 2 are used (the HLN6432 Systems 9000 connector converter board handles the wiring). The control head Spare P103 pins 7 and 8 are not jumpered to the VF Sense P103 pins 1 and 2. In fact the Spare pins can be used as spare lines. Only use the later control head versions.
• FYI, the HLN6283B and AALN4009A control head circuit boards are called for in the Advanced Securenet parts list. I really do not know if any other boards will work or not (special control head firmware may be present?). The HLN6337, HLN6338 and AALN4015 are possible candidates that may also work.
• The dash mount HLN6058 and HLN6066 Interconnect Boards have special connections to J103 pins 1, 2, 24 and 28, specifically for the early HLN6055 Interconnect Board remote mount converter. Because of this, the later version control heads which also use these same J103 pins for different functions are not compatible with the dash mount HLN6058 and HLN6066 Interconnect Boards (unless the Interconnect Board is modified). The dash mount HLN6285 Interconnect Board works with these later version dash mount heads.
• Keep in mind, the P103 pin assignments can be changed with the control head chip resistor jumpers in SP control heads.

J1 connector or , HLN6432 Systems 9000 P100 connector viewed from back of the control head.

Spectra Systems 9000 Control Head Connector
Control Head DB-50 J1 / P100 Pin #	VIP / DEK	Mic.	Radio	Radio Pin Description
1	x			VIP Out 2 (Output) / P100 only - DEK Data Out (Output)
2	x			VIP Out 1 (Output) / P100 only - DEK Clock (Output)
3	x			VIP In 2 (Input) / P100 only - Emergency Jumper
4	x			VIP In 1 (Input)
5	x/x			DEK Data Out (Output) / P100 only - Jumper to pin 1
6				Pin Removed
7		x		Mic. Low (Input)
8		x		Mic. Hi (Input)
9				Pin Removed
10			x	Speaker Audio Low (Output) (BLK/GRN Wire)
11			x	Speaker Audio Low (Input)
12			x	Mic. Hi (Output)
13			x	Mic. Low (Output)
14			x	BATT- (shorted to Pin 31)
15			x	Ignition + (Input) (Orange wire)
16			x	Analog Ground
17			x	Bus + (Input/Output)
18	x			Switched B+ (Output)
19	x			Switched B+ (Output)
20	x			Digital Ground
21	x			Digital Ground
22				Pin Removed
23		x		PTT/HUB Reference (Input)
24		x		PTT (Input)
25				Pin Removed
26			x	Reset (Input/Output)
27			x	Emergency (Output) (see notes below)
28			x	Spare 1
29			x	Spare 2
30			x	BATT+ (shorted to Pin 47)
31			x	BATT- (shorted to Pin 14)
32			x	Ignition - (Input)
33			x	Busy (Input/Output)
34	x/x			VIP Out 3 (Output) / DEK Strobe (Output)
35	x/x			Switched B+ (Output)
36	x/x			Digital Ground
37	x/x			VIP In 3 (Input) / DEK Data In (Input)
38	x/x			DEK Clock (Output) / P100 only - Jumper to pin 2
39				Pin Removed
40		x		Hang Up Box (HUB) (Input)
41		x		Switched B+ (Output)
42				Pin Removed
43			x	Speaker Audio Hi (Output) (BLK/ORG Wire)
44			x	Speaker Audio Hi (Input)
45			x	Detected Audio (Input) (N.C.)
46			x	PTT or Option Tx Audio (Output) (N.C.)
47			x	BATT+ (Input) (Green Wire) (shorted to Pin 30)
48			x	Switched B+ (Output)
49			x	Digital Ground (see pin 49 note below)
50			x	Bus - (RS-422 Input/Output)

• N.C. is an abbreviation for No Connection.
• The input and output notes in parenthesis are with respect to the control head.
• Since these control heads have a single large DB-50 connector that was divided into three sections, check boxes were added to help easily identify the Radio, Microphone, VIP and DEK Expansion connector pins.
• J1 is used on the HCN1063 / HCN1073 documentation. P100 is used on the HLN6432 Systems 9000 connector converter board documentation.
• The A9, B9 C9 or E9 control heads use the above pin out on their J1 rear connector. The B2, C2, E2, A4, B4, C4, E4, A5, B5, C5, E5, A7, B7, C7 or E7 control heads with the HLN6432 Systems 9000 connector converter board use the above pin out on their P100 rear connector.
• J1 / P100 radio connector section mates directly with the Systems 9000 HKN4355 or HKN4356 radio cable, the microphone connector and the 15-80221J01 VIP Connector Housing or the HKN4273A (old part # 3080248L01) DEK cable.
• The yellow highlighted pins with a wire indicated in the description do not go to the radio. These wires are only attached to the control head connector (these wires are not present on optional rear control head cable).
• For negative ground cables, the green wire (BATT+) and orange wire (Ignition+) that are attached to the control head side of the radio cable need to be fused and attached to the battery + voltage. The green wire provides power to the control head. The orange wire is used in conjunction with the RSS programming. If the orange wire is attached to an automotive circuit that is only on when the ignition key is on, the radio can be programmed to only allow transmitting when the ignition key is on.
• The default VIP port automatically switches into a DEK Expansion port configuration whenever a DEK is programmed into the radio's code plug. The DEK or DEKs provide VIP II connection pins.
• Pin 27 Note: The radio drawer Emergency J1 pin 27 is not connected inside the A9, B9, C9 or E9 control head. The control heads may add an internal jumper wire from pin 27 to a VIP In pin (pins 4, 3 or 37). This radio drawer Emergency line can also be taken care of by a jumper on the Interconnect Board, Command Board or low/medium power radio drawer J2 connector.
• Pin 27 Note: The radio drawer Emergency HLN6432 board P100 pin 27 can be jumperd to the VIP In 2 pin 3 (this is done by default on some versions of these boards) or jumperd to ground.
• Pin 27 Note: When a VIP In pin is used for the pin 27 radio drawer Emergency Button wiring, that VIP In port is not programmed with a VIP In function with the RSS (i.e. it is only used as a convenient place to attach the external Emergency switch wire at the cost of consuming the use of one of the unprogrammed VIP In port pins). The DEK VIP II pins can not be used for the radio drawer pin 27 Emergency line (the VIP II pins can be used for the RSS programmed Emergency function).
• Pin 27 Note: The Systems 9000 control head cables used with the Physical Security Housing do not have the pin 27 Emergency wire.
• Pin 49 Note: The HKN6059A / HKN6060A Systems 9000 control head cables used with the Physical Security Housing have a BLK/WHT ground wire attached to pin 49.
• Keep in mind, the J1 / P100 pin assignments can be changed with the control head chip resistor jumpers in SP control heads. The SMD control heads have internal jumpers that can reconfigure some of the control head pins. Other models of control heads should be checked for physical modifications (i.e. cut PC traces, wire jumpers and extra components soldered point to point on the PC board). Expect to find modifications on control heads with a kit number below the model number.

J1 connector viewed from back of the DEK.

Direct Entry Keyboard Connector
DEK DB-50 J1 Pin #	EXP Out	EXP In	VIP II In/Out	Radio Pin Description
1	x			N.C.
2	x			N.C.
3	x			N.C.
4	x			N.C.
5	x			Data Out (Output)
6				Pin Removed
7		x		Ground - VIP Digital Ground
8		x		Data In (Output)
9				Pin Removed
10			x	Ground
11			x	Ground
12			x	Ground
13			x	N.C.
14			x	N.C.
15			x	VIP In 1 (Input)
16			x	VIP In 2 (Input)
17			x	VIP In 3 (Input)
18	x			N.C.
19	x			N.C.
20	x			N.C.
21	x			N.C.
22				Pin Removed
23		x		Clock (Input)
24		x		Strobe (Input)
25				Pin Removed
26			x	N.C.
27			x	N.C.
28			x	N.C.
29			x	N.C.
30			x	N.C.
31			x	N.C.
32			x	N.C.
33			x	N.C.
34	x			Strobe (Output)
35	x			Switched B+ (Input)
36	x			Digital Ground
37	x			Data In (Input)
38	x			Clock (Output)
39				Pin Removed
40		x		Data Out (Input)
41		x		Switched B+ (Input)
42				Pin Removed
43			x	VIP Out 1 (Output)
44			x	VIP Out 2 (Output)
45			x	VIP Out 3 (Output)
46			x	N.C.
47			x	N.C.
48			x	Switched B+ (Output)
49			x	Switched B+ (Output)
50			x	Switched B+ (Output)

• N.C. is an abbreviation for No Connection.
• The input and output notes in parenthesis are with respect to the DEK.
• Since the DEKs have a single large DB-50 connector that was divided into three sections, check boxes were added to help easily identify the VIP II input/output, Expansion Input and Expansion Output pins. The Expansion Input and Expansion Output pins are used to daisy chain up to 3 DEKs, starting with the Systems 9000 control head VIP port to connect the first DEK.
• The optional VIP hardware uses a 15-80212L01 VIP II Connector Housing.
• A HKN4273A (old part # 3080248L01) DEK cable is used to attach a DEK to a compatible control head or to attach to extra DEKs (up to 3 DEKs total).
• A9, B9, C9 or E9 control head work wit up to 3 DEKs. The B2, C2, E2, A4, B4, C4, E4, A5, B5, C5, E5, A7, B7, C7 or E7 control heads require an enhanced control head circuit board.

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