Re: [dstar_digital] First few key-ups garbled on Dstar Repeater
Update: Bought a new RP4000V Module from AES. I replaced the module and everyting worked perfect. All the garble and symptoms were gone instantly. The original module varied in power from a key-up after the repeater was idle for more than 5 minutes. I suspect that the transmitter was dirty. Thanks for all the input. The old module is on the way back to ICOM. I am anxious to see what the find. 73's Gary K2ACY --- In dstar_digital@yahoogroups.com, Ron Wright [EMAIL PROTECTED] wrote: He is desensing the monitoring rcvr making him think the repeater is not transmitting. Bet if he looks at the S-meter he will see signal, but audio does not open. Typical problem when listening to a repeater while txng on another rig on another freq. 73, ron, n9ee/r From: Nate Duehr [EMAIL PROTECTED] Date: 2008/06/18 Wed PM 08:48:27 EDT To: dstar_digital@yahoogroups.com Subject: Re: [dstar_digital] First few key-ups garbled on Dstar Repeater
Re: [dstar_digital] First few key-ups garbled on Dstar Repeater
Maybe already ask, but have you monitored the RF power out to make sure it comes up right away??? If it does not then you are dealing with a weak signal at first. 73, ron, n9ee/r From: garyp609 [EMAIL PROTECTED] Date: 2008/06/18 Wed PM 07:02:26 EDT To: dstar_digital@yahoogroups.com Subject: [dstar_digital] First few key-ups garbled on Dstar Repeater I did more testing today and switched out the power supply for the repeater to an Astron SS-25M. I also cleaned the N-Connector pins and checked for loose cables. The receive is better today but consistently
Re: [dstar_digital] First few key-ups garbled on Dstar Repeater
Not the case with desensing the receiver that I am listening to. I am talking and listening to other users to test. The repeater comes up at very low power with garble and then after about 3 key-ups the S- Meter jumps up and everyone is clear as a bell. My thought is that the TX on the IDRP4000 is flakey and is getting into the receiver on the first couple key-ups. Once it settles down everyone is clear and the system works normal. This only happens when the repeater sits idle for 5 mins. or more. While the repeater is up and working no problems at all. Gary K2ACY [ed - I would still try the dummy load, just in case the tx load had something intermittent that doesn't show up on a meter - then ship the 4000 back to Icom for repair.] --- In dstar_digital@yahoogroups.com, Ron Wright [EMAIL PROTECTED] wrote: He is desensing the monitoring rcvr making him think the repeater is not transmitting.
Re: Re: [dstar_digital] First few key-ups garbled on Dstar Repeater
Gary, Sorry I was responding to another post. The low power up is the problem I guess. I've seen this in other PAs and it usually has to do with a transistor being flaky and most often not soldered properly. Usually see in older radios like GE or Mot. Having low power would produce a higher error-bit rate and might be the problem D-Star has with weak signals where the received is garbled. If a spur when cool then it could be interfering with the rcvr. I think the D-Star repeaters us a brick for the PA and have a power control pin on them. However, if in warranty would think best let ICOM take care of it, but might be months to fix. 73, ron, n9ee/r Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
Re: [dstar_digital] First few key-ups garbled on Dstar Repeater
garyp609 wrote: I did more testing today and switched out the power supply for the repeater to an Astron SS-25M. I also cleaned the N-Connector pins and checked for loose cables. The receive is better today but consistently after the repeater sits for 5 - 8 minutes dormant and is keyed up the first few (2 or 3) transmissions are garbled and then everything clears up for the duration of the conversation. It's quite annoying when a user keys up and gives their call not knowing they aren't being heard. The odds of a user giving their call three times in a row to kickstart the repeater is pretty slim. I can reproduce this everytime the repeater is idle for that time period. Thanks for all the input. Gary K2ACY Sounds like something is changing behavior as it's heating up. It's going to take some hunting to find it. Nate WY0X
