Weirdness sat in yesterday evening... and even after everything was powered off, unplugged, connections tightened, wires checked and rechecked, computer was 'shutdown -h now', unplugged, caps drained, etc... restarted everything and all seemed cool, locally. So, I have 29655 (UHF repeater, usbradio; no-dsp), 29656 (echolink - no hardware) and 29657 (vhf simplex node, TMV-7a using the packet port, 9600-baud [discriminator audio], ctcss from DSP) and all of a sudden, the 2m node went ballistic. Did the resets, made sure the node was on the right frequency, etc, and again, this morning, there was 'echoing' every time the 2m node was unkeyed. Sounded like acoustical feedback. Weirdness! so... (on uhf) *129657. Have a friend on the other side of town - 2 systems linked together. Dialed the uhf node to friends node. Dialed the vhf rig to the same node ... no echo. I let it stay like that about a half hour and just now, on vhf disconnected from my friends link, and reconnected 29657 (vhf simplex node) to 29655 (uhf repeater - both nodes on same computer) and ... NO ECHO. Why? -Geoff/W5OMR
My first guess is that it’s an intermittent RF problem. Sounds like the transmitter is getting into the receiver. That would have a echo due to the short audio delay in the app_rpt repeat path.
On Feb 2, 2015, at 5:57 AM, Geoff <ars.w5omr@gmail.com> wrote:
Weirdness sat in yesterday evening... and even after everything was powered off, unplugged, connections tightened, wires checked and rechecked, computer was 'shutdown -h now', unplugged, caps drained, etc...
restarted everything and all seemed cool, locally.
So, I have 29655 (UHF repeater, usbradio; no-dsp), 29656 (echolink - no hardware) and 29657 (vhf simplex node, TMV-7a using the packet port, 9600-baud [discriminator audio], ctcss from DSP) and all of a sudden, the 2m node went ballistic. Did the resets, made sure the node was on the right frequency, etc, and again, this morning, there was 'echoing' every time the 2m node was unkeyed. Sounded like acoustical feedback. Weirdness!
so... (on uhf) *129657. Have a friend on the other side of town - 2 systems linked together. Dialed the uhf node to friends node. Dialed the vhf rig to the same node ... no echo.
I let it stay like that about a half hour and just now, on vhf disconnected from my friends link, and reconnected 29657 (vhf simplex node) to 29655 (uhf repeater - both nodes on same computer) and ... NO ECHO.
Why?
-Geoff/W5OMR
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On 02/02/2015 08:33 AM, Tim Sawyer wrote:
My first guess is that it’s an intermittent RF problem. Sounds like the transmitter is getting into the receiver. That would have a echo due to the short audio delay in the app_rpt repeat path.
That was my first guess too, Tim. That would be why I took everything apart, checked connections, connectors, etc... made sure it was all tight, etc... then put it all back together, fired it back up and things were good ... for a while, then it started again, this morning :-/ Apparently it didn't have an issue, last night. This morning, when it reared it's ugly head again, I disconnected the vhf simplex node from the uhf repeater node, connected the both of 'em to my buddy across town, and ... no echo. Strange, but ok. Disconnected from him, and reconnected the vhf simplelx node back to the local uhf repeater node and now.. no echo. head scratching, for sure.
participants (2)
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Geoff -
Tim Sawyer