Plectron R720 to 2 meter ham frequencies???

[dbrock411]

Anyone ever recrystaled and retuned a Plectron Chief R720 to the 2 meter ham band? Any luck - will the receiver go out of band a few mhz?

Also, anyone have a service manual as a pdf file, etc? Thanks in advance!

[wa2zdy]

I found some info for you right here on the bat.

http://www.batlabs.com/alertfaq.html

The R720 is for the 148-174 split, so depending how far down you want to go, hopefully it'll do it. So many other splits and luckily you got the best chance.

Good luck.

[Hoseman292]

Chris,
Sorry to resurrect such an old thread. I have never recrystalled an R720. I'm not sure how far the receiver can be adjusted without replacing coils or capacitors.

I have converted the decoders in Plectrons and Motorola Alert Monitors from Quik Call (2+2 chord tones) to Quik Call II by only adding a few jumpers and replacing the tone filters with the Quik Call II filters / Vibrasponders.

Here is a video of a Plectron Model 500 I converted to decode Quik Call II.
https://www.youtube.com/watch?v=tXphPptLw3s

Searching for a manual for Plectron R720 series. I own a pair with an adjustable coil and interested in how to make the adjustments to have it function with a new pair of tones.

[RadioSouth]

Unfortunately Chris is no longer with us, RIP