Subject: Re: Re: TH-F7 - rig gone a bit deaf on UHF
Newsgroups: gmane.recreation.radio.hardware.kenwood.th-f7e
Date: 2006-07-11 23:48:12 GMT (2 years, 2 weeks, 2 hours and 50 minutes ago)
Prosze piszcie po Polsku ! ----- Original Message ----- From: "g8tzl2004" <g8tzl2004 <at> yahoo.com> To: <ken_th-f7e <at> yahoogroups.com> Sent: Sunday, July 09, 2006 1:11 AM Subject: [ken_th-f7e] Re: TH-F7 - rig gone a bit deaf on UHF Thanks. I've done a few searches. I found a so called service manual but it mainly referred to the firmware. I'm looking for a PCB layout plan so that I can accurately locate the UHF front end MOSFET. Any ideas? I'd rather not rely on interpreting the schematics!! -- In ken_th-f7e <at> yahoogroups.com, Fred <glenndriech@...> wrote: > > Signals distribute via filters and switching diodes to > RF amps according to band. The circuitry doesn't seem > tolerant of bad antenna mismatch or disconnection when > transmitting. > > Some reviews mentioning this can be googled for and > see http://www.ham.dmz.ro/kenwood/th-f7e.php > > Fred. > > > --- g8tzl2004 <g8tzl2004@...> wrote: > > > I have noticed that my TH-F7 has gone a bit deaf on > > UHF. Its not > > completely deaf - maybe 15dB down. I connected an > > external pre-amp and > > the signals came up OK. The rig is deaf on both the > > A and B band. The > > VHF side of the radio is OK. > > > > Maybe the UHF front end MOSFET has blown? Is this a > > common problem? > > > > Thanks > > > > > > > ___________________________________________________________ > Try the all-new Yahoo! Mail. "The New Version is radically easier to use" - The Wall Street Journal > http://uk.docs.yahoo.com/nowyoucan.html > ------------------------ Yahoo! Groups Sponsor --------------------~--> Yahoo! Groups gets a make over. See the new email design. http://us.click.yahoo.com/XISQkA/lOaOAA/yQLSAA/ELTolB/TM --------------------------------------------------------------------~->