This is a binary prom image for the S950/990 control heads.
When burned into a 2764 EPROM, it allows front panel frequency
programming for a high band DELTA SX.

To use: power radio up with the ADD & DELETE keys pressed.

Select the mode using the mode up/down keys.
Press *
Select the channel using the channel up/down keys.
Press *
Enter the TRANSMIT frequency using the keys under each digit.
Press *
Enter the TRANSMIT CG code from the table.
Press *
Enter the RECEIVE frequency using the keys under each digit
Press *
Enter the RECEIVE CG code from the table.
Press *
Next Channel, or SQUELCH up for mode, or SQUELCH down for reset which will write the data into the eeprom in the control head and return the head to normal operation.

CG Tone Codes:

00 = no tone
01 = 67.0
02 = 71.9
03 = 74.4
04 = 77.0
05 = 79.7
06 = 82.5
07 = 85.4
08 = 88.5
09 = 91.5
10 = 94.8
11 = 97.4
12 = 100.0
13 = 103.5
14 = 107.2
15 = 110.9
16 = 114.8
17 = 118.8
18 = 123.0
19 = 127.3
20 = 131.8
21 = 136.5
22 = 141.3
23 = 146.2
24 = 151.4
25 = 156.7
26 = 162.2
27 = 167.9
28 = 173.8
29 = 179.9
30 = 186.2
31 = 192.8
32 = 203.5
33 = 210.7

Any numbers above 33 give strange results. You are on your own in this territory.



Notes:
Head must have desired number of MODES/CHANNELS already programmed.

The microphone must be off hook which opens the circuit to the hookswitch. If your system isn't using a hookswitch, you are ok.

Programming jumper must be on programmer connector or EEPROM won't store new data. This jumper will go between pins 3 and 4 of the 6 pin connector on the rear of the head. Remove the jumper after the unit has reset.

When in the programming mode and scrolling through the settings for a channel, the CG tone code is always set to 00, even if a different value was previously programmed. This also happens even if you just set a value other than 00 and you are reviewing the channel again. A bit of a quirk, but no problem once you get use to it.  


From the original text file, but I have never tried:
"Other radios S's, Low Band, UHF can work with this, but you have to do some math.
Example - HiBand Wideband S = TRANSMIT goes in normally, but subtract 68.200 MHz from receive frequency due to different IF."


