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Re: RE: 2m to 10m to 70cm converters



Hi All,
Suggest a Motorola 450-470 Micor 21.4 IF for TX and RX simplex with a single
crystal. Low level stages linear, but driver and PA class C

Art , KC6UQH

----- Original Message -----
From: "Ed Krome (K9EK)" <K9EK@compuserve.com>
To: "William Leijenaar" <pe1rah@yahoo.com>
Cc: "Ed Krome (K9EK)" <71611.76@compuserve.com>; <amsat-bb@amsat.org>
Sent: Sunday, June 05, 2005 8:53 AM
Subject: RE: RE: [amsat-bb] 2m to 10m to 70cm converters


> Message text written by William Leijenaar
> >
> Hi AMSATs,
>
> Thanks for the information.
> I see that 2m downconverters are not a big problem.
> The biggest problem is only to get from HF on 70cm
> uplink.
>
> These upconverters from 28MHz to 435MHz are very rare
> and the once that are available are pretty expensive.
> The "DEM 432-28" from DownEast Microwave is the only
> interresting what I found.
>
> Many thanks for the information,
>
> 73 William
> PE1RAH<
> --------------
> FWIW: if anyone is interested in building their own,
> I can email my 1991 QST article on a 10M to 70cm transverter.
> Easy enough to build and tune without test gear. One
> could build the transmit and LO sections only for U uplink.
>
> It's in 3 .zipped pdf, each less than 1 Mb because I have
>  had trouble sending the whole thing to some mailboxes.
> If you can take a 6Mb file, that's easier.
>
> 73,
> Ed K9EK (ex KA9LNV)
> ----
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----
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