I need some advice on what appears to be a very basic antenna/radio issue. As far as I can tell is has nothing to do with my radio (5000A). Let me explain:
Because of deed restrictions I have hinged my vertical antenna on a mast and only put it up during darkness- I love winter. I also have a loop that lies on the roof that I use during daylight, but it's a pretty lousy antenna; as a matter of fact the vertical when it's folded down is a far better receiving antenna than the loop on the roof. When the vertical is down the noise level signal is steady. The received signal on the loop, although a much higher noise level, is also steady. However, when the vertical is raised the signal fluctuates randomly. The signal (the entire signal indication, not just the noise level) increases by about 10db but the duration of the elevated signal is a second or two. I also noticed that when I checked it with the MFJ 269, the SWR fluctuates also. From the signal reports I'm getting, my transmissions appear to be steady, although I wouldn't bet on that. I replaced the coax yesterday and it had no effect. There are no tree limbs hitting the antenna. The antenna is a Hy Gain DX 77A. All of the utilities in this subdivision are underground and the nearest high power transmission lines are at least a half mile away. Any ideas on what the problem might be. Thanks, Richard, WU5K -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20071121/bc3688b0/attachment.html _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
