MRF497 ought to be a good match and is good to 50W rather than 40.
You can also use MRF455, which is the tabbed device you mentioned. It is a
four-tab device designed for stripline circuitry and will be a bear to mount
and heat sink, but it is otherwise functionally compatible.
I have a little diagram I've been hanging on to that appeared on a French
web site a while back, which shows installation of a '455 where a '477 was
in a Uniden radio of some kind. I sent it to Shawn off-list, if anyone else
wants it drop me an e-mail. You will need to be able to read French! :)
Scott
--
Scott Johnson (scott@wowpage.com) (s.johnson@klotzdigital.com)
ICQ: 30730876 ICBM: N33 45 50.6 W84 49 31.3 (+- 3dB)
> -----Original Message-----
> From: tentec-admin@contesting.com [mailto:tentec-admin@contesting.com]On
> Behalf Of n8coo@juno.com
> Sent: Tuesday, October 08, 2002 4:51 PM
> To: kb1ckt@yahoo.com
> Cc: tentec@contesting.com
> Subject: Re:RE: [TenTec] Argosy
>
>
>
> I believe they are the MRF 477s which are no longer manufactured
> by Motorola - RF Parts has them limit one 29.95 or limit one
> matched pair for $66. (This info came from Ten Tec service,
> prices from RF Part's website
> http://www.rfparts.com/mototran.html ). Needless to say when I
> get my Argosy fixed up I plan on using it mostly qrp or at least
> very conservatively. I think qrp selection on the Argosy bypasses
> the finals. (I don't have the manual in front of me).
>
> Interestly enough when I was doing a search on the Internet I
> found the , uh, shall we say CBers that run a little more than
> legal power, used them a lot and there was a mod I saw for using
> a newer inexpensive tabbed device similar in specs where they
> just soldered leads onto the tabs and had the corresponding
> pinout. I have no idea how it would work out or if it is even
> possible in the Argosy but it was just a thought for future reference.
>
> 73 de Mark N8COO
>
> ---------- Shawn Upton <kb1ckt@yahoo.com> writes:
>
> From: Shawn Upton <kb1ckt@yahoo.com>
> To: "Scanandoah, Alan" <ascanand@harris.com>,
> "'HGLENT'" <hglent@ix.netcom.com>
> CC: tentec@contesting.com
> Subject: RE: [TenTec] Argosy
To: <tentec@contesting.com>
> Date: Tue, 8 Oct 2002 10:34:41 -0700 (PDT)
>
> Thanks to all for the help. I might just go with the
> AADE DFD3 (or similar) and mount the counter outside
> of the Argosy.
>
> Oh yeah, just off the top of my head--are the finals
> for the Argosy the ones that are hard to find, or
> relatively common? If I recall correctly, MRF475's
> (or ???) are long gone, and I'm curious as to what to
> expect if I blow the finals. Not that I plan to,
> but...
>
> KB1CKT
>
> --- "Scanandoah, Alan" <ascanand@harris.com> wrote:
> > The article is even closer than that:
> > http://www.qsl.net/tentec/mods/525mods.htm
> >
> > Al, K2ZN
> > -----Original Message-----
> > From: HGLENT [mailto:hglent@ix.netcom.com]
> > Sent: Tuesday, October 08, 2002 10:10 AM
> > To: kb1ckt@yahoo.com
> > Cc: tentec@contesting.com
> > Subject: [TenTec] Argosy
> >
> >
> > Shawn,
> > everything you ever wanted to know about Argosy up
> > grades is in an
> > article from, Ham Radio, November, 1986, Page
> > 38, Published by CQ
> > Communications Inc.
> >
> > So, off you go to the library to find the article...
>
>
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