3CX800A7's are cheaper than I remember. When I blew up the ones in my Titan
through grievous operator error, I ended up buying pulls rather than mortgage
the house but I see a matched pair of Taylors on RF Parts for only $888.
I wonder who Taylor is. Can't be the old Taylor, can it?
Jon
On Jul 9, 2014, at 6:09 PM, A R wrote:
> Thanks Barry.
>
> That link was really useful. It looks like the #1 amp in question is the
> third production variant described on the ref link. Owner says the nameplate
> specifies Model 425, s/n 91A10160. The #2 amp looks to be the first
> production variant described on the link. Owner says the nameplate specifies
> Model 283, s/n 00323 (although the front panel is marked TITAN 425).
>
> The #1 (third production variant) amp is kaput. According to the owner, it
> suffered catastrophic failure......burned HV components (resistor) and wire
> in the RF deck, including the plate choke. This amp's bandswitch does not
> have "10"m marked on the front panel, but the bandswitch can be rotated to
> that unmarked position (for what that's worth).
>
> The #2 (first production variant) amp is allegedly healthy, and does have the
> panel-marked 10m position for the bandswitch.
>
> Owner has one power supply that was originally paired with the #2 amp. Hope
> it's compatible with the #1 amp.
>
> I'll get an opportunity to personally inspect the amps this weekend. Sounds
> like the #1 amp is a project amp, but it wouldn't be the first "project"
> radio I ever bought.
>
> Allen---W7GIF
> ----- Original Message -----
> From: Barry N1EU<mailto:barry.n1eu@gmail.com>
> To: Discussion of Ten-Tec Equipment<mailto:tentec@contesting.com>
> Sent: Wednesday, July 09, 2014 5:05 PM
> Subject: Re: [TenTec] Titan 425 front panel treatments/schemes
>
>
> Titan color and vintage described at
>
> http://www.tentecwiki.org/doku.php?id=425versions<http://www.tentecwiki.org/doku.php?id=425versions>
>
> Barry N1EU
>
>
> On Wed, Jul 9, 2014 at 9:06 PM, A R <raf_3@msn.com<mailto:raf_3@msn.com>>
> wrote:
>
>> I've run across two 425's, each with different front panel color schemes
>> and knob styles.
>>
>> #1 has a light colored front panel (about the same as a Corsair II),
>> fine-serrated tune and load knobs, and no 10m legend marked on the panel.
>> Front panel is marked "TITAN" (no 425) under the TT insignia.
>>
>> #2 has a dark colored front panel (about the same as a Corsair (not II)),
>> finger-size flutes on the tune and load knobs, and 10m legend marked on the
>> panel. Front panel is marked "TITAN 425" under the TT insignia.
>>
>> Don't yet know the serial numbers of either amp, but just based on the
>> color schemes and knob styles, I presume the #1 amp is the later
>> production, and the #2 an earlier production amp.
>>
>> Is it possible to ascertain the production vintage just by virtue of the
>> color scheme and knob style, or does one really need the nameplate data
>> (like s/n)? Any meaningful changes during the production run to correct
>> reliability issues on early units?
>>
>> Thanks....
>> Allen---W7GIF
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>> http://lists.contesting.com/mailman/listinfo/tentec<http://lists.contesting.com/mailman/listinfo/tentec>
>>
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