n...@no6b.com wrote:
At 10/21/2009 13:23, you wrote:
Anybody got any suggestions about fixing the squelch circuit? (Spare me
the get a REAL repeater comments please!)
Is the MICOR squelch still available? Anybody done it to one of these?
I added a Micor squelch board from LinkComm to a Kendecom RX once. It
worked fairly well, though it was still somewhat susceptible to off-channel
signals, making the squelch excessively tight whenever a strong signal was
present 15 kHz away, regardless of modulation level on that signal. I
suspect this to be due to design flaw in the MR4 design (mid-stage IF
amplifier overload). A 10 kHz LPF in front of the Micor squelch board may
cure that problem.
Bob NO6B
Funny you should mention that, Bob... The Kendecom repeater the local
club had would indeed overload. If you were within a mile of the
repeater site and forgot to go to low power on the mobile rig, the
repeater would remind you - by cutting you off. If you reduced the
power level on your radio to 5 watts, you could use the repeater almost
right up to the site. This is the only repeater we have utilized at
that site that exhibited this behavior. It was replaced about 7 years
ago with a 30 year old MICOR.
Kevin Custer
