TRANSFORMER and OPTO ISOLATOR PARTS KIT FOR PSK31 RF ISOLATION INTERFACE





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This parts kit contains all parts shown below; $18.00. Price includes PRIORITY mail shipping.
Order Parts Kit; ''ISO-KIT1''
TOTAL COST IS: $18.00 USA orders only!
Make Money Orders payable to: BUX CommCo
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 BUX CommCo
115 Luenburg Drive
Evington, VA 24550
IMPORTANT NOTE: When using the Accessory port of your transceiver (Re: Icom Acc(1)...etc), request parts kit ''ISO-KIT2.''
This kit contains two (2) 600 ohm to 600 ohm, 1:1 transformers, and items shown, including the ISOcoupler. In addition to what you see, I also include diodes and transistors (not shown) for the transistor PTT circuit. This kit does NOT contain an 8 or 13 pin accessory port plug/connector.
Parts Kit ISO-KIT2 is $18.00 Total
Price includes PRIORITY US MAIL shipping. USA Orders only!

IMPORTANT NOTE: When using the FT 847.. etc, request parts kit ''ISO-KIT-3.''
This kit contains (1) BUXFMR6K6 600 ohm to 600 ohm, 1:1, and (1) BUXFMR1K8 1K to 8 ohm transformers, and items shown, including the ISOcoupler. In addition to what you see, I also include diodes and transistors (not shown) for the transistor PTT circuit. Some parts are not shown, but are included in the ISO-KIT-3.
Parts Kit ISO-KIT-3 is $18.00 Total
Price includes PRIORITY US MAIL shipping. USA Orders only!

IMPORTANT NOTE: When using the FT 990 / FT-1000 .. etc, request parts kit ''ISO-KIT-4.''
This kit contains (1) BUXFMR6K6 600 ohm to 600 ohm, 1:1, and (1) BUXFMR1K8 1K to 8 ohm transformers, and items shown, including the ISOcoupler. In addition to what you see, I also include diodes and transistors (not shown) for the transistor PTT circuit. Some parts are not shown, but are included in the ISO-KIT-4.
Parts Kit ISO-KIT-4 is $18.00 Total
Price includes PRIORITY US MAIL shipping. USA Orders only!

IMPORTANT NOTE: When using the ICOM IC-746, IC 756, IC-775 ...etc, request parts kit ''ISO-KIT-5.''
This kit contains two (2) 600 ohm to 600 ohm, 1:1 transformers, and items shown, including the ISOcoupler. In addition to what you see, I also include diodes and transistors (not shown) for the transistor PTT circuit. Some parts are not shown, but are included in the ISO-KIT-5. This kit DOES INCLUDE the 8 pin male DIN connector.
Parts Kit ISO-KIT-5 is $18.00 Total
Price includes PRIORITY US MAIL shipping. USA Orders only!

  1. 3.5 millimeter stereo plug (LINE IN) from receive audio.

  2. 3.5 millimeter stereo plug (LINE OUT) to transceiver.

  3. 25,000 ohm pot (transmit coarse level control).

  4. 4.7k (4700 ohm) resistor as part of the ''L'' pad attenuator.

  5. 1000 ohm to 8 ohm audio transformer to isolate external speaker to sound card LINE IN.

  6. 600 ohm to 600 ohm 1:1 audio transformer used as isolation between sound card LINE OUT and transmit input.

  7. Ferrite bead used to prevent RF feedback to Tx audio in.

  8. Ferrite bead used to prevent RF feedback to Tx audio in.

  9. 3.5 millimeter (mono) plug to external speaker ''OUT.''

  10. 8 pin screw-on microphone connector for most Alinco, Kenwood, and similar transceivers.

  11. 1N4148 diode for ''DTR'' PTT activation.

  12. 1N4148 diode for ''RTS'' PTT activation.

  13. 1200 ohm 1/4 watt dropping resistor.

  14. NEC PS-2601, or 4N25 Opto-Coupler (phototransistor) to isolate PC serial port from transceiver PTT circuits.

    15. Some part kits will contain connectors relating to specific radio models and types. Most all interface kits will contain more parts and connectors than shown in the photo below.

PCB project board is included to mount small parts on.



The kit of parts comes attached to a 'pink' styrofoam card. Most all the parts in the 'ISO-KITS' are shown above... except the transceiver mating connector. This connector may also be part of the kit, but the type is determined by the ISO-KIT number.
Although most ISO-KITS come supplied with the (I/O) mating connector for the transceiver, interfaces which call for a 13 pin DIN I/O connector will NOT include this connector.
Where a kit calls for a variable pot for Tx coarse audio control, if the delivered kit contains a 'RED' pot, it is a 1000 ohm (1k) pot. If the pot is 'ORANGE,' the pot is 25,000 ohms (25k). In many kits, I include extra parts so the builder can choose between the transistor PTT switch and/or the optocoupler-phototransistor isolated PTT switch.





One method used to mount parts on ''project'' PCB.

Buck "[email protected]"

© 0110 1996-99 G. E. "Buck" Rogers Sr.

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