Hello Rick,
Thank you for your response.
Yes you are indeed correct they are MRF-458"s and I appreciate the info on the
others PT3647
You are correct on these also according to my schematic.
Do you think I should change both sets Rick?
Do you have any idea where I can buy these from.
I really appreciate your help and information very much.
Thanks
Barry KA8ENC
From: Rick - DJ0IP / NJ0IP <Rick@DJ0IP.de>
To: 'Discussion of Ten-Tec Equipment' <tentec@contesting.com>
Sent: Friday, August 12, 2011 2:33 PM
Subject: Re: [TenTec] Omni-d
The RF Power Board in the Omni-D was "80491 Final Amplifier".
It has 2x MFR-458 in the final (454 was close, Jerry).
It also has a pair of PT3647 on that board (push-pull drivers). You might
want to pick up a pair of these too, just in case.
I do have the schematic and circuit description if you need it.
73
Rick, DJ0IP
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of Jerry Haigwood
Sent: Friday, August 12, 2011 11:09 PM
To: 'piper cub'; 'Discussion of Ten-Tec Equipment'
Subject: Re: [TenTec] Omni-d
Fred,
Unless your Omni D puts out only 1 watt it is not a 2n3866. The 2n3866
is a 1 watt transistor that is popular at VHF/UHF frequencies. I would
think the manual that came with the Omni D would have a schematic which
would show the finals. It is probably something like a pair of MRF454s.
Jerry W5JH
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of piper cub
Sent: Friday, August 12, 2011 3:59 PM
To: Fred@fmeco.com; Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Omni-d
Hi Fred,
Just out of curiosity.
What is the type number of these transistors. Is it 2N3866 because I am
looking for the same final amplifier transistors for my Omni-D.
If I am wrong on the part number can you correct me please. I also need to
know where to get some, or if indeed you did find them at RF parts as
previously mentioned earlier in a post.
Thanks......... Barry KA8ENC
From: Fred Moore <fred@fmeco.com>
To: TenTec@contesting.com
Sent: Tuesday, August 9, 2011 10:58 PM
Subject: [TenTec] Omni-d
Anyone know if the original final transistors are still available, or
what a good sub is?.. Fred
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