One of the black, rectangular push button covers on my TR-7 cracked and broke.
Does anyone know where I might find a replacement?
Thanks, 73 & Happy Holidays!
Jude WD9FUM
> From: [email protected]
> Subject: Drakelist Digest, Vol 17, Issue 39
> To: [email protected]
> Date: Sat, 28 Nov 2009 12:00:02 -0500
>
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> Today's Topics:
>
> 1. AC-4 Advice Please (Curt)
> 2. Re: AC-4 Advice Please (Don Cunningham)
> 3. Re: AC-4 Advice Please (Al Parker)
> 4. 2N3394 Transistor? (Bill & Becky Marvin)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 27 Nov 2009 17:46:30 -0600
> From: "Curt" <[email protected]>
> Subject: [Drakelist] AC-4 Advice Please
> To: <[email protected]>
> Message-ID: <001101ca6fbb$d865acf0$0201a...@db1b1vf1>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> I bought my AC-4 from a ham who claimed to have recapped it. I've never
> opened it, so have no idea whether this actually happened. It seems to
> function fine, but the "loss of bias" catastrophe continues to nag at me.
> Are there any warning signs of imminent failure? What is preferred
> preventative? Replace all of the caps ( perhaps again ) or install an AC-4R
> module? Or just wait until a failure, then clean up the resulting mess?
>
> Advice appreciated,
>
> 73 Curt KB5JO
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 27 Nov 2009 20:02:45 -0600
> From: "Don Cunningham" <[email protected]>
> Subject: Re: [Drakelist] AC-4 Advice Please
> To: "Curt" <[email protected]>, <[email protected]>
> Message-ID: <2ba17a9c2ef448a197ac7f18076ec...@sunroomcomputer>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Curt,
> My advice would be to buy and install the AC-4R kit and not have to worry
> about what shape the "supposed" caps are. It is cheap insurance for these
> nice rigs. That being said, I would caution that there are fatal voltages
> involved with the AC4 power supply, and would caution that you might want
> help installing the kit if you haven't had experience working with it.
> 73,
> Don, WB5HAK
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Fri, 27 Nov 2009 21:05:57 -0500
> From: "Al Parker" <[email protected]>
> Subject: Re: [Drakelist] AC-4 Advice Please
> To: "Curt" <[email protected]>, <[email protected]>
> Message-ID: <c8a536ca5d9e4c5fa3d709e9b8702...@home>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=response
>
> Hi Curt,
> I'd look inside and see what's there. If it's been done (or not), then
> I'd check the ESR of each cap, cuz I do have an ESR meter. If it's been
> done and looks like it'd been a while ago, by the appearance of the caps, I
> might replace the bias caps, particularly if I couldn't ck ESR. If any
> suspicions, replace the bias caps. I've got a cupla AC-4's that haven't had
> any attn, exc. maybe bias caps, and I don't worry as much as I oughta, but
> have an AC-4R kit available for when I get a round tuit.
> But don't wait for a failure. If it's bias caps that go you'll lose the
> finals almost instantly, even if you're sitting there, and it can happen any
> time the rig is powered up, whether on the air or not, and usually wahen
> you're not in the room.
> If the guy lied to you & it hasn't been done, then the AC-4R is an easy
> fix, to last many yrs.
> There's no easy/fits all answer, except to use the AC-4R kit. You pays
> your money & takes your choice.
> 73,
> Al, W8UT
> New Bern, NC
> www.boatanchors.org
> www.hammarlund.info
>
> "there is nothing -absolutely nothing- half as much worth doing as simply
> messing about in boats."
> Ratty, to Mole
>
>
> ----- Original Message -----
> From: "Curt" <[email protected]>
> To: <[email protected]>
> Sent: Friday, November 27, 2009 6:46 PM
> Subject: [Drakelist] AC-4 Advice Please
>
>
> >I bought my AC-4 from a ham who claimed to have recapped it. I've never
> >opened it, so have no idea whether this actually happened. It seems to
> >function fine, but the "loss of bias" catastrophe continues to nag at me.
> >Are there any warning signs of imminent failure? What is preferred
> >preventative? Replace all of the caps ( perhaps again ) or install an
> >AC-4R module? Or just wait until a failure, then clean up the resulting
> >mess?
> >
> > Advice appreciated,
> >
> > 73 Curt KB5JO
> >
> > _______________________________________________
> > Drakelist mailing list
> > [email protected]
> > http://mailman.zerobeat.net/mailman/listinfo/drakelist
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Sat, 28 Nov 2009 09:25:18 -0600
> From: "Bill & Becky Marvin" <[email protected]>
> Subject: [Drakelist] 2N3394 Transistor?
> To: <[email protected]>
> Message-ID: <840bc360b5b342f89a078fb8f893a...@yourb27fb1c401>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hello I'm still working on my R4B AGC problem...........does Radio Shack have
> a equivalent replacement for the commonly used 2N3394 by Drake
> or someone on the list who has bought a large quantities of the 2N3394's that
> they would sell me a few?
>
> Best Holidays
>
> Bill Marvin KB9IV
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