| Author |
Message |
    
Waukeshajim
Junior Member
Username: Waukeshajim
Post Number: 12
Registered: 12-2006
| | Posted on Sunday, February 25, 2007 - 6:52 am: | 
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I changed the voltage regulators to 2sb817 and 2sa1012 and it still has a slight SSB transmit warble! |
Kid_vicious
Senior Member
Username: Kid_vicious
Post Number: 2422
Registered: 9-2004
| | Posted on Sunday, February 25, 2007 - 11:49 pm: |
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is the modulation limiter clipped?
in that chassis there is one that is for AM only, and one that is for both AM and SSB, if you cut the one for both, it can cause a warbly sound on SSB.
wish i could remember the part numbers right now, but its been too long. if i find them, i will post them here.
matt |
Kid_vicious
Senior Member
Username: Kid_vicious
Post Number: 2423
Registered: 9-2004
| | Posted on Monday, February 26, 2007 - 12:01 am: |
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found some info:
if your 2SB817 is TR51,
and the 2SA1012 is TR53,
then TR32 is the transistor that you want to make sure is intact.
should be in the front right part of the board.
if its gone, replace it with a 2SC945, and just use VR14 for modulation control.
also, make sure you are not using the el cheapo radio shack replacement cord. the wire ga. is too small and can cause a warble on SSB.
need to use a cord with 16ga. or bigger wire.
good luck,
matt |
Waukeshajim
Junior Member
Username: Waukeshajim
Post Number: 13
Registered: 12-2006
| | Posted on Sunday, March 25, 2007 - 7:43 am: |
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Yep! TR32 was gone. Replaced and I am using a good power cable. Warble is gone!!! I bought the radio used and who knows what was done to it.!!
Thanks!!!! |
Kid_vicious
Senior Member
Username: Kid_vicious
Post Number: 2462
Registered: 9-2004
| | Posted on Wednesday, March 28, 2007 - 9:21 pm: |
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you are very welcome.
darned golden screwdrivers!LOL
glad you got it working.
matt
anyone wanting a "clean signal", just look to the left and build one of these!!!
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Cdn_superpower
Member
Username: Cdn_superpower
Post Number: 72
Registered: 6-2005
| | Posted on Saturday, March 31, 2007 - 7:52 pm: |
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just put tr32 back in my 2000gtl recently,good call, r131 is the one you wanna clip.
I used the ends off a computer powersuppy cord to power my gladiator, the harddrive power connectors have nice wire in them just gotta bend the little tabs in the molex connector and pull them out.
73's guys! |
Dale
Advanced Member
Username: Dale
Post Number: 703
Registered: 12-2002
| | Posted on Sunday, April 01, 2007 - 1:12 am: |
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no no dont clip anything there is a vr for modulation for the grant.cant remember right off hand but its in the modification list to the left of this post
dale/a.k.a.hotrod
cef426
cvc#64
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