The system operates, according to Tedly, on 446.880 MHz using minus (-)5 MHz shift and is PL'ed at 146.2 Hz. If your Radio supports CTCSS decode, you can use Encode/Decode at 146.2 Hz. This way your receiver is muted until it decodes the 146.2 Hz and opens your receivers audio. If configured as before it also will eliminate most of the squelch crashes.
The KJ6ZD repeater, if it ever will be finished, is made of an Hamtronics R-305 synthesized receiver set to 441.880 MHz and a Hamtronics T-304 Exciter at 446.880 MHz. This is a Test Pair in California and who knows when the system gets coordinated. It means that interference with other repeater systems may occur at times.
The receiver is sensitive to de-tuned duplexer and will be blown right into the silicon heaven, if the de-tune is excessive. I have replaced most of the RF section many times. The 70cm Exciter is actually working quiet fine but has some power drifts that I personally don't like. All over impression is that if you want to use the HAMTRONICS stuff, you'll have to finish the design in certain areas. Out of the box, trust me, it will cause problems if you are not experienced. Although, not claimed to be, it is not plug and play and the other phrase applies more "PLUG AND PRAY". Also, without the proper test equipment it may cause frustration since the gear is very sensitive.
The system can be remotely switched to low power output, primarily during AC power loss while the system runs on battery. On AC loss a special macro that hopefully senses the AC power loss will execute and switch the system to low power via dropout relay to protect the Henry from being driven dry. The 146.2 Hz tone is used as incoming and outgoing squelch. Your Radio can be set to mute everything except what comes along with the PL tone This is essential for a system on a shared frequency.
The Arcom RC210 repeater controller is directing the received audio to the appropriate output ports. This controller has a total of three ports. The repeater operates on Port One. On Port Two is another set of HAMTRONICS receiver/transmitter via custom circuit connected. It has actually formed a 2m transceiver operating on a simplex frequency. The Echo-Link is connected to Port Three With the use of the HAMTRONICS gear the audio problems have been solved and it sounds on all ports the same. The individual ports can be linked or unlinked, making them stand alone ports. A Scheduler would normally take care of the linking and unlinking at certain times. Unfortunately, the Controller resets, gets hung up in limbo and resets for whatever the reason maybe. If this happens the Clock (Real Time) gets lost and the scheduler does not work, of course. Until I have figured out what causes the random resets it will not have any timed schedules.
Take a Visual Tour but it may take some time to load since there are large images.