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Bc910
Advanced Member
Username: Bc910

Post Number: 672
Registered: 7-2004


Posted on Thursday, January 12, 2006 - 4:20 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

OK,
I have my Ar-3500 as many of you know.
I tryed hooking it up to my mickey moused power supply in the house (optima yellow top/ trickle charger) and both transmit and recieve have a nasty hum. My first thought would be power supplu, but even running off the battery directly with out the charger it's still there! Other radios don't do it!
Any ideas?
BC
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Bc910
Advanced Member
Username: Bc910

Post Number: 673
Registered: 7-2004


Posted on Thursday, January 12, 2006 - 9:53 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Come on, I know Pat should have an answer....
BC
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Chad
Advanced Member
Username: Chad

Post Number: 649
Registered: 11-2004


Posted on Thursday, January 12, 2006 - 11:05 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

It does not know the words? :-) Are you grounding with the home bond at all?
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Inspector
Intermediate Member
Username: Inspector

Post Number: 157
Registered: 12-2001
Posted on Friday, January 13, 2006 - 12:47 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Just a thought...as old as those radios are, would a dry electrolytic capacitor in the power-filtering or audio sections cause your hum?...
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Patzerozero
Senior Member
Username: Patzerozero

Post Number: 2245
Registered: 7-2004


Posted on Friday, January 13, 2006 - 1:06 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

my suggestion is to send it here, PO box.....

oh, i guess you want to KEEP it. sent ya a couple suggestions, bc. since it's in BOTH rcv & xmit, gotta try to see if ANYTHING alters tone or intensity-mic gain, power output, external speaker, disconnect stock speaker, change of mic/no mic, loose board connections-any of the boards, CPU connections, that little beep that happens when you press the buttons, etc....
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Texasyankee
New member
Username: Texasyankee

Post Number: 8
Registered: 1-2006


Posted on Friday, January 13, 2006 - 4:06 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

i can remember running the same setup years ago.
i ended up just putting a capacitor between the pos. and neg. leads.
problem is that it was so long ago i don't remember what size cap. i used
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Bc910
Advanced Member
Username: Bc910

Post Number: 674
Registered: 7-2004


Posted on Saturday, January 14, 2006 - 8:52 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

OK Here's the deal.
It stopped!
Just up and stopped!
No changes, I turned it on to start illiminating possibilities and start the fixin' and it stopped!

Oh well.
You know I had a VW once that did stuff like that, would work one second, not the next, then work again! Would never be able to find the problem(S)

BC
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Hollowpoint445
Senior Member
Username: Hollowpoint445

Post Number: 1009
Registered: 6-2004
Posted on Saturday, January 14, 2006 - 10:39 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

It was probably moisture in the distributor - fairly common problem with air cooled VWs.
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Patzerozero
Senior Member
Username: Patzerozero

Post Number: 2259
Registered: 7-2004


Posted on Saturday, January 14, 2006 - 11:19 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

send it here anyway, bc. . the ar3500, not the VW
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Bc910
Advanced Member
Username: Bc910

Post Number: 675
Registered: 7-2004


Posted on Saturday, January 14, 2006 - 11:21 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

About half way through your post, Hollowpoint I thought you were talking about the radio :-)
BC
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Hollowpoint445
Senior Member
Username: Hollowpoint445

Post Number: 1010
Registered: 6-2004
Posted on Sunday, January 15, 2006 - 2:34 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

:-)

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