At 10:22 AM 12/26/06, you wrote: >On Tue, 26 Dec 2006, Jim B. wrote: > > Actually, that sounds like standard 2-channel, 4-wire tone remote > > operation to me, where it's required to listen to both channels all > > the time. Is there 2 rx's in this box or just one? If just one, it > > likely has some sort of scanner in it. An option on those was called > > PSLM, or priority search lock monitor. It was just a simple 2-channel > > scanner circuit that toggled between the two rx channel elements. I > > think there may have even been a 4-channel version. > >I just got the remote, I don't have any details about how the actual >transmitter and recievers were rigged other than what was written on the >inside housing of the remote. > > > Also CTCSS should not have any effect on any of that, other then they > > probably have a CG disable circuit, which in commercial service it is > > required to listen carrier squelch briefly before tx'ing. It likely > > will toggle rx into CSQ, then back to normal after tx is keyed. > >For some reason, the remote adaptor (radio side) seems unwilling to >switch to transmit when the monitor is active, and I've noticed that >when I change from F1 to F2, the remote doesn't follow until the >transmit button is pushed. I've also noticed that the remote flips the >transmit when the handset is removed from the cradle, presumably to make >sure the radio is on the selected TX channel. > >I'm learning about this thing as I go, and I can see the tones on the >O-scope, so I know *something* is being generated, but I wasn't able to >locate my buttset so I could actually listen. I suspect either my tones >are too low or too loud for detection. I'm at a bit of a loss as to how >exactly "standard" four-wire, two channel is supposed to work -- I see >most tones on pair one, but some tones I see on pair two, which throws >me off a bit. > >Not being able to reliably use monitor or PTT is a bit off-putting as >well, but I suppose when I get the tone levels right things should start >behaving. > >-- >Kris Kirby ><[EMAIL PROTECTED]>
One handy item on the shop bench is a set of PC style amplified speakers. You can frequently get them for next to free at the swap meets, or on the as-is table at Radio Shack. In this case you could wire the left channel to one transmit pair and the right channel to the other transmit pair and hear what is going on. Mike WA6ILQ
