Doesn't sound like an antenna or cable problem. If you were in Melbourne I could hook up my antenna analyzer and tell you for sure.
Anyway it sounds like it's the receiver on the radio. Could be a few things. Desense is one possibility. Could be some electronics on the boat that is doing it. Did you add anything new? Another possibility is that the radio has some corrosion in the helicoils in the receive section. And lastly if you had someone very close by to you transmitting on the same channel you are listening to at high power then it could have blown out the receive. Again if you were in Melbourne I could put the radio on the service monitor and tell you what the receive looks like. If it is an antenna or cable problem and you are transmitting with it like that you will be sure to blow out the transmit side real soon. Do you have an emergency antenna? If not can you get one? That would be one way to see if you get the same thing with a different antenna system. Vern s/v Nirvelli -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Flying Pig Sent: Thursday, November 19, 2009 8:28 PM To: [email protected] Subject: [Liveaboard] VHF antenna anomaly Hi, y'all, We have a very curious (well, curious to me; there may well be better informed folks out there than I on this) situation with our mast-top mounted antenna, connected to our Uniden ES series UM525 unit at the nav station. On channel 68 in particular, but in some others as well, it doesn't "hear" well at all. Only stations very close by come through. Yet, we're heard very clearly at the expected distances on 68. To me, that sounds backward, as, if there's a problem, it's usually that you can't be heard, due to some cable issue not allowing full power to get out. Unfortunately, I have no ready means to remove this unit/plug up another to the cable to see if that's really the issue, or, possibly (doesn't seem likely, as some channels are fine) that it's the radio at fault. Any experience with this sort of problem? Our helm radio gave up the ghost a couple of days ago (something in the electronics makes it think it's always getting a signal ["busy" icon], but there's no noise regardless of volume or squelch levels), so we're a bit nervous, until we can get a replacement, given our deafness in the hailing channel here in Abaco. Any help appreciated... L8R Skip and Lydia, in Marsh Harbour where it's only 80 during the day, a nice break Morgan 461 #2 SV Flying Pig KI4MPC See our galleries at www.justpickone.org/skip/gallery ! Follow us at http://groups.yahoo.com/group/TheFlyingPigLog and/or http://groups.google.com/group/flyingpiglog "You are never given a wish without also being given the power to make it come true. You may have to work for it however." (and) "There is no such thing as a problem without a gift for you in its hand (Richard Bach) _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard To subscribe send an email to [email protected] To unsubscribe send an email to [email protected] The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard To subscribe send an email to [email protected] To unsubscribe send an email to [email protected] The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
