I did solder that small wire. I have continuity from the B+ pad on power
supply
board to the plate caps. The small wire came wrapped on a terminal lug so
it was obvious I needed to do something with it.
I am sure I missing something simple that I did or didn't do. Just trying to
find it.
Didn't do much with the amp today as I was playing contest.
73, Larry W6NWS
----- Original Message -----
From: "Alek Petkovic" <vk6apk@bigpond.com>
To: "Larry" <w6nws@arrl.net>; "Amps" <amps@contesting.com>
Sent: Sunday, October 31, 2010 5:45 PM
Subject: Re: [Amps] Clipperton L suggestion
> G'day Larry
>
> That Ameritron plate choke comes with the wire at the top, tinned but not
> soldered. Make sure you didn't forget to solder it and make sure the
> soldered joint is sound.
>
> I put the same choke in my Clipperton L and only noticed that I hadn't
> soldered the wire during the final once over before putting the covers on.
>
> 73, Alek
>
>
> At 10:28 PM 31/10/2010, Larry wrote:
>>I have had this amp since the 1980's and never had trouble with the TR
>>relay
>>(well, other than it is slower than molasses). It was untouched in the
>>mods
>>I did.
>>But I did check continuity of the relay contacts. The TR relay does switch
>>over.
>>
>>I think, as Roger also suggested, perhaps the problem is in the bias
>>circuit. It too
>>is affected by the TR relay. I did not directly change the bias circuit
>>but
>>it was
>>affected in the sense that the filament RFC was changed and it is related
>>to
>>the
>>bias circuit (a 47K resistor and 50W zener). The RFC was connected to a
>>terminal
>>strip which I moved about an inch to fit the new RFC in and it looks OK
>>and
>>some
>>continuity checks seemed OK but I am going to do some additional checks to
>>make
>>sure I didn't mess up something. The RFC and terminal strip are in the
>>middle of the
>>amp and the relay, resistor, and zener are on the back panel of the amp.
>>
>>73, Larry W6NWS
>>----- Original Message -----
>>From: "Danny Pease" <dpease@adams.net>
>>To: <amps@contesting.com>
>>Sent: Sunday, October 31, 2010 9:10 AM
>>Subject: Re: [Amps] Clipperton L suggestion
>>
>>
>> > Larry, did you confirm continuity across the T/R relay contacts? When
>> > I
>> > had
>> > a Clipperton, that was an ongoing issue.
>> >
>> >
>> >
>> > NG9R
>> >
>> >
>> >
>> >
>> >
>> > Message: 2
>> > Date: Sat, 30 Oct 2010 23:34:20 -0400
>> > From: "Larry" <lknain@nc.rr.com>
>> > Subject: [Amps] Suggestions - I broke my amp
>> > To: "Amps" <amps@contesting.com>
>> > Message-ID: <6DE29DB55E8740479687855C81AF7535@LarryKnainPC>
>> > Content-Type: text/plain; charset="iso-8859-1"
>> >
>> > I am looking for suggestions regarding my Clipperton-L. The basic
>> > problem
>> > is
>> > that there is
>> > no output. No apparent plate current.
>> >
>> > I did several things:
>> >
>> > 1. I replaced the power supply board which seems to be working as the
>> > meter
>> > shows about
>> > 2500V (I don't have an HV probe to confirm independently that there is
>> > 2500V).
>> > 2. I had to fix the parasitic suppressors so I put in an AL572 RFC and
>> > suppressor board and
>> > increased the bypass cap to 0.001.
>> > 3. I changed the plate blocking cap to 2000pf (from 500pf) and changed
>> > a
>> > couple of doorknobs
>> > for 160. The no output has been checked only on 20 and 15 so far.
>> > 4. I changed the filament RFC to an RF Parts RFCFIL30.
>> >
>> > Some other facts:
>> >
>> > 1. The filaments are lit.
>> > 2. The meter shows what I recall as roughly the correct plate voltage.
>> > 3. Using an ohmmeter there is continuity from the PS HV pad to the
>> > plate
>> > connectors.
>> > 4. There is no plate current that I can see. Although, I once saw the
>> > plate
>> > current go to about
>> > 350mA and still no output.
>> > 5. Several years ago I added a tuned input board and there is
>> > continuity
>> > from the LVDC pad to
>> > input board and the bandswitch (unchanged in current mod but changed
>> > with
>> > the input board)
>> > still works correctly.
>> > 6. There is continuity from the plate to plate blocking capacitor and
>> > continuity from the "other"
>> > side of the plate blocking capacitor to the plate tuning capacitor.
>> > 7. I rechecked the connections and still think everything is correct.
>> > 8. No arcs, blown fuses, etc.
>> >
>> > I have obviously overlooked something. Suggestions?
>> >
>> > 73, Larry W6NWS
>> >
>> >
>> >
>> > _______________________________________________
>> > Amps mailing list
>> > Amps@contesting.com
>> > http://lists.contesting.com/mailman/listinfo/amps
>> >
>>
>>
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>
>
> http://www.qrz.com/db/vk6apk
> http://www.qrz.com/db/vk6ap
>
>
>
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