Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - N8MW

Pages: [1] 2
1
General discussion forum / Buzz on remote audio
« on: 2023-12-25, 00:41:19 »
There is a constant buzz, whine, on the receive audio on the remote RRC as soon as I connect to the control RRC.  It is there all the time, no matter what the gains are set to.  I am using default at the moment.  Not using any other function, just audio straight through.  Any ideas for a cure?

2
General discussion forum / Re: Noise on TX with Anan 7000
« on: 2020-07-19, 02:35:23 »
Turns out the fix is not so simple, because there is some current leakage between the PLL ground and the MIC ground internal to the RRC. Had to design the isolation relay circuit to accommodate for this.  Anyone interested contact me for details.

3
General discussion forum / Re: Noise on TX with Anan 7000
« on: 2020-07-16, 22:47:17 »
OK, i understand.  But the noise is somehow related to the PTT hot, because without the PTT hot connected to the Anan, there is no noise, even with the Mic hot connected, and the Mic ground, and the PTT ground both connected to the common ground in the Anan. So somehow the PTT circuit in the RRC interacts with the Anan PTT circuit. Hard for me to figure out.

4
General discussion forum / Re: Noise on TX with Anan 7000
« on: 2020-07-16, 22:19:08 »
OK great.  Can you explain how a common ground can cause the noise in the mic circuit? Can the mic output circuit in the RRC be modified to prevent this?

5
General discussion forum / Re: Noise on TX with Anan 7000
« on: 2020-07-16, 21:44:45 »
I am thinking of an isolation relay for the PTT.  How much current can the PTT sink?  What is the value of R115?  Can it handle 12VDC?

6
General discussion forum / Re: Noise on TX with Anan 7000
« on: 2020-07-16, 20:54:05 »
Yes, the Anan 7000 mic and PTT have a common ground.  If I disconnect the RRC PTT wire from the Anan, there is no more noise.  How can I work around this with the RRC?  Would an isolation transformer for the Mic help? What is a trafo?

7
General discussion forum / Noise on TX with Anan 7000
« on: 2020-07-16, 16:06:26 »
I have a constant digital type buzzing noise on TX when using the 1258 with directly connected ethernet cables to the routers.  This noise is loud enough to cause full rf power output when the mic gain on the radio is turned up enough to hear the audio from the mic at the control end.  This noise doesn't occur when the tx is keyed locally, even with the 1258 connected.  But as soon as the PTT is pushed at the control end and the radio goes into TX, the noise appears.  I have tried two completely different 1258's on both radio and control ends, and both sets of 1258's have the same behavior. I've tried different codec gains on the control unit and the same noise occurs.  I've tried different mics and connection cables with the same result. No noise problem with a mic connected directly to the same mic input on the radio(no 1258).  Only the PTT and Mic are connected at the control and radio units, and both grounds are connected. No noise on the receive audio at the control end.   I've seen many posts on the forum describing a similar problem, but no posted solution.   :( Please help.

8
All those ports are forwarded, but I still get the UDP command status error(0).  What can cause this error?

9
No, I don't need UDP control I'm only interesed in whether or not it will affect audio or PTT.

10
I am getting the UDP command status error.  Possibly because it's not enabled in WiFi connection.  I am using the RRC for audio and PTT only.  Will the error affect operation for these functions?

11
OK thanks.  I was not aware of profiles.

12
Thanks Mitch.  Seems like there should be an easier way to switch between radios than having to change 4 port numbers in the control RRC, but that would be a future enhancement I guess.  I think I'll just keep same ports on all radio RRC's and power them on and off with an IP power switch.


13
OK thanks.  So you have to change all 4 ports in Advanced to switch to a different RRC?

14
OK, then what address do I enter in the control RRC, in the radio address box, from outside of the LAN?  You can't enter any address like IPAddress:Portno. 

15
Yes, I know how to change the radio RRC port and IP address.  I am not asking how to do that.  I am asking how to connect the control RRC to a specific radio RRC when several are turned on and on the same LAN.  Port forwarding is set up with different port numbers, but how is the address specified in the control RRC to direct to a specific port.  Entering the IP address alone is ambiguous.

Pages: [1] 2