| Page 1 of 2 | 1 | 2 |
|
|
Yaesu FT-1000 MP Receive decreases?
Hi,
I have an FT-1000MP, the original, not Mk-V, not field, vintage is 1999. Recently I have noticed that if I turn the radio on 75 meters, the receive is low.... until I just tap the mike or key, then the signals jump up 10-20db, stay there for a while, and eventually, after 4-6 minutes, fade down, until another mike tap is applied. This will continue all night. Antenna is a resonant dipole. It seems to happen only on 75/80... preamp problem? should I switch to flat? Suggestions? Thanks! |
"M Wilson" wrote in message om... Hi, I have an FT-1000MP, the original, not Mk-V, not field, vintage is 1999. Recently I have noticed that if I turn the radio on 75 meters, the receive is low.... until I just tap the mike or key, then the signals jump up 10-20db, stay there for a while, and eventually, after 4-6 minutes, fade down, until another mike tap is applied. This will continue all night. Antenna is a resonant dipole. It seems to happen only on 75/80... preamp problem? should I switch to flat? Suggestions? Perhaps you're building up a static charge on the antenna in the dryer winter weather? Then when you transmit it's being discharged? Not sure if this would be workable with a transitter in line, but I used to put an NE-2 neon lamp across the antenna/ground connections outside (no series dropping resistor). This would only let the static build up to about 70 volts before discharging.. |
"M Wilson" wrote in message om... Hi, I have an FT-1000MP, the original, not Mk-V, not field, vintage is 1999. Recently I have noticed that if I turn the radio on 75 meters, the receive is low.... until I just tap the mike or key, then the signals jump up 10-20db, stay there for a while, and eventually, after 4-6 minutes, fade down, until another mike tap is applied. This will continue all night. Antenna is a resonant dipole. It seems to happen only on 75/80... preamp problem? should I switch to flat? Suggestions? Perhaps you're building up a static charge on the antenna in the dryer winter weather? Then when you transmit it's being discharged? Not sure if this would be workable with a transitter in line, but I used to put an NE-2 neon lamp across the antenna/ground connections outside (no series dropping resistor). This would only let the static build up to about 70 volts before discharging.. |
hhhmmm, could it be a dirty (or bad) relay? I have a Yaesu FT-102
(vintage around 1984 or so) It had trouble with one of the relays till it were replaced. It had the same symptoms as you describe. Give Yaesu a call and ask for a tech. Good luck. 73 , Mark M Wilson wrote: Hi, I have an FT-1000MP, the original, not Mk-V, not field, vintage is 1999. Recently I have noticed that if I turn the radio on 75 meters, the receive is low.... until I just tap the mike or key, then the signals jump up 10-20db, stay there for a while, and eventually, after 4-6 minutes, fade down, until another mike tap is applied. This will continue all night. Antenna is a resonant dipole. It seems to happen only on 75/80... preamp problem? should I switch to flat? Suggestions? Thanks! |
hhhmmm, could it be a dirty (or bad) relay? I have a Yaesu FT-102
(vintage around 1984 or so) It had trouble with one of the relays till it were replaced. It had the same symptoms as you describe. Give Yaesu a call and ask for a tech. Good luck. 73 , Mark M Wilson wrote: Hi, I have an FT-1000MP, the original, not Mk-V, not field, vintage is 1999. Recently I have noticed that if I turn the radio on 75 meters, the receive is low.... until I just tap the mike or key, then the signals jump up 10-20db, stay there for a while, and eventually, after 4-6 minutes, fade down, until another mike tap is applied. This will continue all night. Antenna is a resonant dipole. It seems to happen only on 75/80... preamp problem? should I switch to flat? Suggestions? Thanks! |
Ya know, I spent good time EARLY this morning before work telling you what
the problem is and the fix and sent it to you directly. Too bad the message bounced back. Why is your e-mail address NO GOOD??? (M Wilson) good luck ============= Wilson wrote: Hi, I have an FT-1000MP, the original, not Mk-V, not field, vintage is 1999. Recently I have noticed that if I turn the radio on 75 meters, the receive is low.... until I just tap the mike or key, then the signals jump up 10-20db, stay there for a while, and eventually, after 4-6 minutes, fade down, until another mike tap is applied. This will continue all night. Antenna is a resonant dipole. It seems to happen only on 75/80... preamp problem? should I switch to flat? Suggestions? Thanks! |
Ya know, I spent good time EARLY this morning before work telling you what
the problem is and the fix and sent it to you directly. Too bad the message bounced back. Why is your e-mail address NO GOOD??? (M Wilson) good luck ============= Wilson wrote: Hi, I have an FT-1000MP, the original, not Mk-V, not field, vintage is 1999. Recently I have noticed that if I turn the radio on 75 meters, the receive is low.... until I just tap the mike or key, then the signals jump up 10-20db, stay there for a while, and eventually, after 4-6 minutes, fade down, until another mike tap is applied. This will continue all night. Antenna is a resonant dipole. It seems to happen only on 75/80... preamp problem? should I switch to flat? Suggestions? Thanks! |
Sorry about the mail being bounced. I logged on to find that the
spammers filled the account up with junk. I emptied it out. Once again, sorry, and I hope you didn't lose your early morning email...its appreciated. Best... MW hi wrote in message ... Ya know, I spent good time EARLY this morning before work telling you what the problem is and the fix and sent it to you directly. Too bad the message bounced back. Why is your e-mail address NO GOOD??? (M Wilson) good luck ============= Wilson wrote: Hi, I have an FT-1000MP, the original, not Mk-V, not field, vintage is 1999. Recently I have noticed that if I turn the radio on 75 meters, the receive is low.... until I just tap the mike or key, then the signals jump up 10-20db, stay there for a while, and eventually, after 4-6 minutes, fade down, until another mike tap is applied. This will continue all night. Antenna is a resonant dipole. It seems to happen only on 75/80... preamp problem? should I switch to flat? Suggestions? Thanks! |
In article ,
hi wrote: Why not post it here for others to use. It's good information for all MP owners to file away just in case. 73 Dale, K9VUJ Ya know, I spent good time EARLY this morning before work telling you what the problem is and the fix and sent it to you directly. Too bad the message bounced back. Why is your e-mail address NO GOOD??? (M Wilson) good luck ============= Wilson wrote: Hi, I have an FT-1000MP, the original, not Mk-V, not field, vintage is 1999. Recently I have noticed that if I turn the radio on 75 meters, the receive is low.... until I just tap the mike or key, then the signals jump up 10-20db, stay there for a while, and eventually, after 4-6 minutes, fade down, until another mike tap is applied. This will continue all night. Antenna is a resonant dipole. It seems to happen only on 75/80... preamp problem? should I switch to flat? Suggestions? Thanks! -- |
| All times are GMT +1. The time now is 09:26 AM. |
|
Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
RadioBanter.com