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Regency RH-606B (Relm)

This page will be updated when I get the RX sensitivity adjustments complete!

DISCLAIMER:
This document is for informational purposes ONLY! If you choose to follow the steps outlined herein, you do so at your own risk. I cannot, nor will not, be responsible for damage to equipment caused by modifications YOU make to the radio as a result of your reading this document.

NOTES:

I am working on this conversion...

All I can tell you now is how to program this radio.  These do not require a PC, "Suitcase" or other additional hardware to program, they are truly 'field programmable'!  There will be approximately 26 capacitors which will need to be changed to make this radio a "A" model.  I'll post the parts locator and values as soon as I figure them out.

The RH-606 is a 60 Watt radio (FCC type accepted for 75 Watt maximum).  This radio is not 'wide band' unless it has been modified. It has a bandwidth of only 3MHz without modification, can be 5 to 8 MHz after modification. The "B" split radio is 150-162MHz, "C" split radio (RH-606C) is 162-174MHz.

Per the Service Manual, the major difference between the "A" and "B" split radios is the value of around 20 capacitors and resistors.  I am working on the 'swap list' to bring this radio down into the Amateur 2 Meter band.

E-Mail: NoSpam.K4MBE@Where.Is.That.Link


PROGRAMMING INSTRUCTIONS:

Regency RH-606 programming instructions. 3/11/99 sjc

Programming:

1. Open top of radio and locate the microprocessor (40 pin IC). Approximately 1/2  inch in front of microprocessor is a cut jumper labeled J-401.

2. Short J-401 and turn the radio on.

    Note:  I soldered thin wires to this jumper and put a small momentary (normally open) push button switch through the side of the case near
                the rear so I can reporgram it later without re-opening the case.  Just push the added switch while turning the radio on and...

3. Press the "PROG/PRI" key then the "10" key. The display will go blank.

    Programming note:  Use the "10" key any time you need to enter a ZERO.

       Simplex:

             1. Enter the 6 digit frequency followed by  ZERO ZERO ("10" key twice).

             2. Enter the 2 digit CTCSS code (affects both TX and RX).

3. Press the "Enter" key, then the channel number.

4. In a few seconds the display will flash then go blank.

5. Repeat for the next desired channel if necessary.

    Repeater Splits:

1. Enter the 6 digit receive frequency followed by  EIGHT ZERO (remember ZERO is the "10" key).

2. Enter the 2 digit CTCSS code for receive.

3. Enter the 2 digit CTCSS code for transmit.

4. Enter the 6 digit frequency for the transmit frequency and

5. Press the "Enter" key, then the channel number.

6. In a few seconds the display will flash then go blank.

7. Repeat for the next desired channel if necessary.

   Receive only frequencies:

1. Enter the 6 digit receive frequency followed by  ZERO  FOUR (remember ZERO is the "10" key).

2. Enter the 2 digit receive CTCSS code (or ZERO ZERO for no receive tone).

3. The "Enter" key, then the channel number.

4. In a few seconds the display will flash then go blank.

5. Repeat for the next desired channel if necessary.

Here is the the Regency/Relm CTCSS to two digit code cross reference table.

Retune the radio per procedure in the Service Manual.

The Service Manual is $25.00 plus shipping and can be ordered from Ten Four Communications at 1303 Walsh Drive, Round Rock TX 78681. My contact was Stacey. Their phone number is 1-800-487-9576. The publication number for the RH-606B is 03004399000.

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Copyright 1999, 2004, Sterrett J. Carter

Last revised 07 May, 2004