To be honest, I'm not sure at this point what I really KNOW :). What I am trying to do seems so simple in a logical way to me, but knowing what inputs and outputs to use for what is all new to me when it comes to RF.
I do have folks around with service monitors, and somew knowhow, but I am trying to get a parts list together so I can purchase the required pieces while the $$$ is available to me (another story there - I told them I thought this could be done for under $500 so they said "do it"). Anyways, the back of the repoeater has a DB25 jack with the following I/O availabe: 6 Vcc TX +15V DC Supply for External Controller, TX Unit Maximum 1 A 7 GND TX DC Ground, TX Unit 8 Busy TX Output Terminal for Busy Signal, TX Unit 9 AFO TX Audio Output, TX Unit 10 DISC TX Discriminator Output, TX Unit 11 TXA TX Transmit Audio, TX Unit 12 PTT TX External PTT, TX Unit 13 TXD TX Transmit Data Input, TX Unit 18 Vcc RX +15V DC Supply for External Controller, RX Unit 19 GND RX DC Ground, RX Unit 20 Busy RX Output Terminal for Busy Signal, RX Unit 21 AFO RX Audio Output, RX Unit 22 DISC RX Discriminator Output, RX Unit 23 TXA RX Transmit Audio, RX Unit 24 PTT RX External PTT, RX Unit 25 TXD RX Transmit Data Input, RX Unit I also know that I can get a OPC-617 cable for the Icom VHF radio that brings the I/O outside the chassis. Maybe I am not explaining the DTMF portion correctly, but I just want to be able to bring the crossband repeat function up and down remotely using a tone code. This is exactly what I need though as I am not sure what all of these I/Os will do for, or against me, and I know better than just to try to connect wires together. Thanks Bryan --- In Repeater-Builder@yahoogroups.com, "rtc_0001" <[EMAIL PROTECTED]> wrote: > > You probably already know you need to find tx audio input, squelch > gated rx audio output, ptt & COS or TOR. > > COS is carrier operated relay & TOR is tone operated relay. > Preferably you'll use TOR as the active low output to key the vhf ptt. > > There's software settings to make these I/O's as you need them. > > It is necessary to adjust audio levels into & out of each radio. > This can be done with series resistors or attenuator pads. > Chances are you'll need to use caps to equalize the audio as well. > > Ideally you'll have a service monitor available to check all this. > > In lieu of the SM, you can carefully compare between the uhf & vhf > sides for best match of tone quality & levels. > > Wish I had the tech info near me but it's all at work. > > You might find a way to use the dtmf decoders in each unit along with > some type of latching relay to perform your control functions. > > I'm pretty sure there's I/O for the dtmf decoder available on the > accessory jack. > > --- In Repeater-Builder@yahoogroups.com, "bkcarter33" <bcarter2@> > wrote: > > > > My local Community Emergency Response Team (CERT) has recently > > obtained a UHF repeater (ICOM CY-F221S). > > .........snipped....... > > I would like to accomplish the following and would love to receive > > some guidance from someone who has the knowledge to instruct me: > > I would like to set up a cross band link for them from the UHF > > repeater, to a VHF radio:> Thanks for any help you could provide me, > > .........snipped....... > > 73 > > > > Bryan Carter > > KE7GVJ > > Kaysville CERT Administration > > >
