[DSP-10] Thinking outside the box - DSP Elmer ?

Wed, 13 Mar 2002 03:21:23 +0000

Before re-designing the entire transceiver, how about using the DSP-10 as a 
144 Mhz I.F. for a series of low band transverters?  It may be better from a 
image rejection standpoint to use a high frequency first I.F. vs. an one 
close to the operating frequency.  It shouldn't be too dificult in this day 
and age to build a local oscillator in the range of 114 to 144 Mhz.  Maybe 
one of the super-techs on the reflector will comment on this.

Joe WA3OTI

P.S.  I saw an article on the internet by Harry Lythall SM0VPO for a three 
transistor  20 meter to 144 mhz (I.F.)transverter.  Output was 2mW.  It 
seems to have been pulled, but he may e-mail a copy to you.

>From: ak0b <[email protected]>
>Reply-To: [email protected]
>To: [email protected]
>Subject: [DSP-10] Thinking outside the box - DSP Elmer ?
>Date: Mon, 11 Mar 2002 12:57:38 -0600
>
>When one starts examing the DSP-10 unit it is much more than a DSP two 
>meter
>transceiver.
>
>The sub-unit (The EZLITE DSP) is really a 15 khz transceiver that could be
>adapted to many other configurations in addition to a two meter device.
>
>Would anyone like to become an Elmer to the group and work we  beginners
>through modifications of the software to use it for other ham designs.   A
>nice DDS is available from S&S Engineering, so with a balance mixer and an
>audio output amplifier we could have a HF receiver.
>
>Maybe the first step would be sort of a over lay file (cook book style) 
>that
>changed the source code for other frequences i.e 20 meters. i.e.    We 
>could
>get away with a simple mixer at HF frequencies.
>
>comments....      suggestions......     work group ????
>
>de Stan ak0b
>
>
>
>
>
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