Hi Bradley, Glad to hear you got it working and isn't it VERY interesting how when you buy something you expect it to work right out of the Box, BUT this wiring issue has been around for a VERY long time and you would think they would come up with a specific FLEX 5000 cable instead of the Yaesu cable or something they picked up at the Audio Video store that may or may not work in a RF environment depending on where the cable was assembled.
Being on the third floor you may have to continue to use the Artificial Ground which will mean something else to tune when you change bands (Real pain) If you have a great deal of RF coming back from the feed line then you might have to go further then using a Coax Air wound choke, read this article from W1HIS it is VERY informative and I think will help your situation. http://www.yccc.org/Articles/W1HIS/CommonModeChokesW1HIS2006Apr06.pdf I have used these ideas MANY times for my self and to help other's in my area build chokes to install out by there antenna's and along there feed line who have had problems with RF getting into the House / shack instead of being radiated out of the Antenna. Glad you got it figured out and glad I could be a little help. 73's Bret WX7Y -----Original Message----- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Bradley Feldman Sent: Tuesday, December 07, 2010 9:00 AM To: flexradio@flex-radio.biz Subject: Re: [Flexradio] New 5000A User - TX Audio (severe distortion) Issues Here's an update on my progress: Per Brett and Gerald, I rewired the Heil Mic cable on the XLR side distinctly and separately use all three pins of the XLR connector (only 2 were being used and the shield was tied to the Mic negative). I rewired the 8 pin side to have both the mic shield and the PTT shield on pin 5. Mic pos, Mic neg and PTT on the proper pins per the 5K manual. The 8 pin connector cover is not attached to anything. So far, that seems to have solved the mic audio distortion issue. I'll be switching to using the rear panel connection later this week. As far as RFI, I've temporarily hooked up an MFJ-931 Artificial Ground (until I can set up a RF suppressor ground in the spring). That seems to be working as well. The RF ground current is showing considerably strong on the unit's meter. I will likely put together the "air choke" that Harvey recommended. Seems easy to construct and I'd think would lessen the necessary work of the Artificial Ground. Many thanks to all who sent suggestions and recommendations. KK2QQ _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/ -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
