Hi Gene,
> "Gene Fassett" <[EMAIL PROTECTED]> wrote:
> Skipp (and group),
> I downloaded the high band VHF amp owners manula from your
> web site - Thanks.
You are quite welcome...
> The RF power transistors are listed as "Factory Select".
> Do you know what the mfgr and part no. is or what would work?
> Thanks
> Gene
> WA2IJE
Probably some Motorola MRF-xxx type equivalent. I'd probably use
a Motorola RF Transistor Data Book to look for a matching power
level and case style. I'd also need to know how many stages
are in the amplifier...? ... direct drive of 2 output transistors
or if there's a single or dual predriver stage before the
final sections.
Other ideas are to search out diagrams for the MFJ, RF Concepts,
Mirage and other common brands of 220 100 watt amplifiers to
see what transistor they use(d).
Also... go visit the RF Parts Web page... if you're using a
classic amplifier dual final circuit, you probably have two
60 watt transistors in parallel.
We'd need more information or someone in the know about TPL's
transistor equivalents, but they're probably just using house
numbered transistors bought from a mfgr, which are the same if
not very similar to the common numbers we all refer to often.
You're starting to head in the right direction.
Hope that helps...
skipp
>
> > Fix the tpl amplifier. There's more than one tpl amplifier
> > manual download on my www.radiowrench.com/sonic web page.
> >
> > I see a guy on ebay selling the transistors for about
> > $25 each, which is not bad at all for nos parts.
> > skipp
> >
> >> "derigent1" <genefass@> wrote:
> >> I'm working on re-activating my long dormant 220MHz repeater
> >> in Cherry Valley NY. My old TPL, 100 Watt PA died long
> >> ago after an anomalous high voltage event....
> >> I can't seem to find much on the market these days to
> >> replace the PA other than the Hamtronics PA which sells
> >> for like a grand.
> >> Any suggestions????
> >> Gene
> >> WA2IJE
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
