Lost all signals and ability to transmit on my 6600M

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  • Updated 1 year ago
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I have filed a helpdesk ticket for this issue, but since it is the weekend I thought I would throw it out to see if anyone has any additional suggestions.

This afternoon the radio was working fine.  The radio is left powered on during the day. After dinner I went to the shack and the waterfall was blank, not even noise. I checked the antenna with another receiver, it was fine. I tried using antenna #2 input. I cycled the receiver off and on with no results. I then removed power from the receiver (I normally use the remote on/off jack to power on) again with no result. I double checked my settings (antenna selection, etc). and also my power supply. The problem is the same whether directly on the 6600M or on SmartSDR. Everything else seems to work fine. The radio still selects bands on my linear, still tunes my SteppIR. It keys the amp, but there is NO RF OUTPUT. The only anomalies noticed is a dark box on the waterfall and the mouse will not select a frequency with a double click. It will still click and drag to select frequency. I am attaching a couple of photos to illustrate. Also, occasionally (maybe every 4 to 5 minutes) there will be noise on the waterfall for maybe a second.   Additionally, I swapped out power supplies and downgraded to v2.1.32 but still no joy.   There have been no thunderstorms, only clear skies and there was no power outages. 

Any suggestions are welcome.  Thanks
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Wendell Abernathy/N4VLK

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Posted 1 year ago

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Photo of George Molnar, KF2T

George Molnar, KF2T, Elmer

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Have you tried a factory reset, including removing power? That might be the best bet.
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Bill Billingsley

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This happened to my 6600 during a QSO last Sunday.  If you can change bands and freq from SSDR, but nothing else works, your PC is probably receiving null data in the datagram broadcast to the PC on the UDP port from the radio.  Freq/band info is passed via the TCP port as I understand it.  I do not have a Maestro, so I can not comment on that interface.  The  tech had me do a factory reset; no change.

Cut to the chase when the tech calls you and have teamviewer installed on your PC and have him install "wireshark" on your PC so that he can verify that 1) the UDP port is operational (PC receiving data) and/or 2) the datagram contents are non-zero.  Have him save a copy of the results for both TCP and UDP ports. 

During all the testing over two days, I had to un-install my virus SW on my radio PC, and install SSDR on a separate computer.  I got the same results with a separate PC. I finally got him to install a data sniffer (probably the wrong terminology) to prove that my PC was receiving UDP datagrams before I would accept that both of my computers were dropping/blocking the UDP datarams. He recorded the data and consulted with engineering before calling me back with an RMA. The radio shipped back Friday.

BTW, I have had my 6600 for 82 days at the time of the last failure. Its headed back for the second time. A 41 day MTBF (not considering MTTR) is not encouraging.

Bill, N5IR
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Wendell Abernathy/N4VLK

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Thanks Bill for the detailed reply.  This was definitely helpful in regard to what to expect.  It looks like our problems are similar.  If you had had the Maestro I believe you would have experienced the same results as me.  The computer has nothing to do with the problem.  It occurs with the freestanding radio!  Again thanks for the heads up.  If necessary I might have to refer them to your ticket.
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Bill Billingsley

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My help desk ticket is 23520

Bill, N5IR
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Tim - W4TME, Customer Experience Manager

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Official Response
This issue is being resolved by the service department.

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