Guys, here's some filter information which may be useful:
Model P/N BW Freq. Poles Description
282 / 48054 / 250 / 6.299250 / 8
285 / 48053 / 500 / 6.299250 / 8
288 / 48075 / 1800 / 6.300000 / 8 / 9125 / N5 unk / 48127 / 6000 / 9 / ?
unk / 48074 / 2400 / 6.3 / Stock (non-option) 6.3 MHz filter
AND JUST FOR INFO:
Model P/N BW Freq. Poles Description
216 / 48161 / 500 / 9.002210 / 6 RTTY filter
217 / 48036 / 500 / 9.000750 / 8
218 / 48037 / 1800 / 9.001500 / 8
219 / 48055 / 250 / 9.000750 / 6 /8047 / 6840
??? / 48057 / ??? / ???? / 4 / 84-05
220 / 48058 / 2400 / 9.001500 / 8 /8307 / 6840
221 / 48243 / 250 / 9.000500 / 6 Low note CW filter
73 - Rick, DJ0IP
(Nr. Frankfurt am Main)
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of chuck adams
Sent: Monday, February 09, 2015 3:48 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] TenTec Paragon 585
On 02/09/2015 05:29 AM, Peter Bertini wrote:
> Hi Chuck
>
> Are you sure the crystals are exactly on 6.3 MHz?
>
> If I was going to do this, I'd place an request for defective TenTec
> 6.3 MHz crystal filters. There should be some out there. You can
> harvest the good crystals, and use the boards for your custom designs.
> At least that way you'll know you have matched crystals, except for
> the bad one in the bunch.
>
> Regardless, if you go with Bomar, I'd suggest sending along a good
> crystal from a TenTec filter so they can match it.
>
> Pete
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
Pete,
I am going to take a filter and yank one of the crystals and measure the
parameters. I'm pretty sure they are 6.300MHz, as the cost of custom
crystals would be too much.
I do measurements of crystal parameters all the time, so no problem.
The project is on hold for 10 days due to two presentations I am doing
locally and in Alb. NM this month. :-)
Thanks for the email and I am scouting the Universe for rigs that are being
offered up for 'parts only'.
dit dit
chuck, k7qo
PS. Still looking for the schematics and I'm calling TenTec this a.m. to
see what they have to offer that isn't going to cost me an arm and a leg.
I've got $150 invested in the Paragon and P/S and the only problem is the
low power out.
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