Bent, There are many more knowledgeable than I, but let's start with some easy things.
Try CW, see if you have power out at all. This will split the trouble between totally TX failure, and only one mode gone. Then check the connectors on the mic. Try another mic, if you have one. Is the relay kicking when you push the PTT? Are you using VOX? If so, make sure the PTT switch is in the correct position (I think out for VOX, in to force PTT). Try using PTT instead of VOX. Try to divide the problem to areas of the rig. Think of the radio as a unit with a lot of connected boxes inside. Each box has a function that ties into other boxes and finally provide a single unit (VFO, mixer, RF Power amp, mic amp, VOX amp, PTT line, etc). Try to find the problem box. Let us know here what you are finding. This group has a great bunch of highly technical folks. 73, Ron WD8SBB --- On Sun, 10/25/09, Bent <b...@post5.tele.dk> wrote: > From: Bent <b...@post5.tele.dk> > Subject: [Drakelist] Drake TR-7A problem. > To: drakelist@zerobeat.net > Date: Sunday, October 25, 2009, 7:33 AM > > > > > > > > Hello All > > I have got a problem with > my very nice and not very > much used TR-7A. > > I am using the > receiver-part from time to time > with no problem. > > Yesterday I would go ON > air also with the > transmitter-part. > > I am using the mic. 7077 / > Shure 444. > > Last time I used the TR-7A > on air, everything works > perfectly. > Mic. gain adjustment > normally 10 > o'clock. > > Yesterday no output > at 10 o'clock > ajustment. > > There are some output with > the Mic. gain total > clockwise. > > Are someone able to inform > me what can be wrong > ? > > Thanks in > advance. > > Best regards > > Bent > OZ5ZD > > -----Inline Attachment Follows----- > > _______________________________________________ > Drakelist mailing list > Drakelist@zerobeat.net > http://mailman.zerobeat.net/mailman/listinfo/drakelist > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
