| Author |
Message |
    
Sonoma
| | Posted on Tuesday, June 18, 2002 - 10:01 pm: | 
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well I did it again .I bought a used mirage 2950 and it talked for 2 weeks.now it does not transmitt on any band,no carrier at all.receive is fine and you can get modulation out of the pa system.with a radio in the same room it sounds as if it is trying to send a signal.you can here the mic sort of pop when keyed and no modulation or rf on the meters .any help would be great.thanks sonoma |
Sonoma
| | Posted on Wednesday, June 19, 2002 - 3:03 am: |
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hey 307 I now have the 148 and the 2950 on the blink.does your offer still stand?if so I could send both to you .Sonoma |
Bigbob
| | Posted on Tuesday, June 18, 2002 - 11:38 pm: |
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Sounds like the pll is out of lock ask 307,e-mail him,he probably can tell you. |
Taz
| | Posted on Wednesday, June 19, 2002 - 6:57 am: |
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my cobra 29 does the same thing except no receive or transmit. It just happened recently too. nothing, pa works. |
Jyd
| | Posted on Wednesday, June 19, 2002 - 11:00 am: |
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well my friends done that and it was a bad solder joint.i took a pencil eraser and gently presed in difrent spots on the board until it keyed.it was a 2950 |
Sonoma
| | Posted on Thursday, June 20, 2002 - 12:06 am: |
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did some voltage checks and tested the curcuit for bad solder joints and none found.a local tech is stumped on it also.transmit light comes on also when keyed but no rf leaving the 2950.this type of radio is more complicated than any thing else I have seen.
sonoma |
Taz
| | Posted on Thursday, June 20, 2002 - 7:54 am: |
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dang sonoma my 29 does the EXACT SAME THING! |
Dmlock
New member
Username: Dmlock
Post Number: 1
Registered: 4-2004
| | Posted on Saturday, January 29, 2005 - 2:13 pm: |
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I have a 2950 the ssb works fine but it breaks up on am and fm.It doesn't transmit at all on cw. what could be it's malfunction? |
Kid_vicious
Intermediate Member
Username: Kid_vicious
Post Number: 184
Registered: 9-2004
| | Posted on Saturday, January 29, 2005 - 3:58 pm: |
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try and give us a few more details on what is happening when you key the mic. does it produce a carrier? will it modulate the carrier? what mods have been done? when was the last time you remember it working properly? when you say it wont transmit at all on CW, did you try plugging a key into the 1/8" jack on the back or are you just keying the mic? how do you know the SSB works fine?
help us help you.
matt |
Sonoma
Intermediate Member
Username: Sonoma
Post Number: 154
Registered: 11-2001
| | Posted on Saturday, January 29, 2005 - 7:08 pm: |
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hey kid vicious that radio is fixed ****** took care of it for me .it took him about 3 days to find it .that was 3years ago.
thanks anyway
Sonoma |
Kid_vicious
Intermediate Member
Username: Kid_vicious
Post Number: 189
Registered: 9-2004
| | Posted on Sunday, January 30, 2005 - 3:09 pm: |
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sonoma, i was answering the post that dmlock had written. guess you didnt see it. well, glad to hear your radio works though!
matt |
Dmlock
New member
Username: Dmlock
Post Number: 2
Registered: 4-2004
| | Posted on Sunday, January 30, 2005 - 5:16 pm: |
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It worked fine last week that was the last time I used it. It started transmiting eraticlly, now no transmit at all on am, fm or cw and yes I plugged a key into the jack and tryed it it seems it works well on ssb rec and transmit. NO mods I hate messing with a good thing! If it ain't broke don't fix it. |
Sonoma
Intermediate Member
Username: Sonoma
Post Number: 156
Registered: 11-2001
| | Posted on Sunday, January 30, 2005 - 5:34 pm: |
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Hey kid looks like I should have read it all.
Dmlock look for cold solder joints at the vco and crystals I just put the cover on mine for the same reason this morning.in fact just closed it up and turned on the computer.mine was acting up the same
Sonoma
|
Kid_vicious
Intermediate Member
Username: Kid_vicious
Post Number: 198
Registered: 9-2004
| | Posted on Sunday, January 30, 2005 - 7:39 pm: |
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hmmm, i was thinking it might be a broken mic wire, but you say no carrier on am or fm and good signal on ssb? is this with the radio's bar graph or with a wattmeter. im curious how many watts you're putting out on ssb, because im thinking you might have a bad final or driver or both. that radio uses two 2sc1969 finals, and im not sure what would happen if one went bad. i'll check my voltage chart when i get home tonite and tell you the correct voltages you should see from the finals and driver. check back tomorrow evening.
matt |
Kid_vicious
Intermediate Member
Username: Kid_vicious
Post Number: 205
Registered: 9-2004
| | Posted on Tuesday, February 01, 2005 - 4:47 pm: |
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what was i thinking! the 2950 uses two 2sc2312's for finals. anyway, here are the voltages that i have.
Q46 (2sc2312)-B- .68 am tx, .71 ssb tx with mod.
-C-4.15 am rx, 3.8 am tx, 13.25 ssb rx, 12.6 ssb tx (15.11 with mod.),
-E- 0.00 am and ssb, tx and rx.
Q47 (2sc2312) -B- .58 am tx, .71 ssb tx with mod.
-C- 4.15 am rx, 3.8 am tx, 13.25 ssb rx, 12.6 ssb tx (15.11 with mod.)
-E- 0.00 am and ssb, rx and tx.
Q48 (2sc2166) -B- .74 am tx, .74 ssb tx.
-C- 4.15 am rx, 3.88 am tx, 13.25 ssb rx, 12.75 ssb tx,
-E- 0.00 am and ssb, rx and tx.
hope this helps you. sorry for the wait.
matt |
