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PGXL intermittently fails to key up when transmitting on 6400m. Suggestions?
![K7KKR](https://us.v-cdn.net/6032377/uploads/userpics/V58FQC6F00RS/n3VRZ6P3X8K09.jpg)
Best Answer
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Thanks for your comments. I tried Cat 8 Ethernet cables (double shielding and shielded plugs) with no success. I updated the 6400M to firmware to version 3.3.33 which seemed to solve the problem. Previous version was 3.3.29. I’ve run three radio nets (3+ hours each) with no instances of the PGXL failing to key.0
Answers
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It can be RF getting into any number of cables, including the ethernet cables themselves. Other cabling can contribute as well. Things like mic cables, key cables, an unrelated 2 meter antenna, etc etc. It can find sneaky paths that don't seem radio related, so it can be very difficult to track down.
I usually have to start disconnecting things one at a time until I find the culprit. I have recently taken a brute force approach and put ferrites everywhere. I still have a minor problem on 20 Meters where I never had a problem before, but 40, where I had a bad problem is now totally clean. You just never know with RF...
Because like you, my problem is intermittent, it is really hard to track down. I recently got a clamp-on RF ammeter, so I will go through all my cabling to see if I can sniff out some 20 Meter RF and concentrate my efforts there.
Best of luck tracking this down.
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You could try some of these:
I swear by them!!
73 Mike
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Excellent! I am glad that you got it working.
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