[1000mp] Re: Ten-Tec Orion - Initial Impressions

[Bill Miner]

Earl,

Thanks for your followup  posting on this subject.  

After I read your first message I became a bit concerned.  My 500 hz
filter requires a -175 hz offset but I do NOT have a problem going from
UCW to LCW.

73,
Bill - K6WLM

k6se@juno.com wrote:
> 
> In my original report on the Orion, I wrote:
> 
> "2) There is a feature in the menu to adjust the center frequency of the
> narrow (250Hz and 500Hz) crystal filters.  The factory default setting is
> "0"  (adjustable from -250 to +250 -- Hertz, I assume).  I have both
> filters (Ten-Tec - not INRAD), and both of them require the -250 setting
> on UCW and the +250 setting on LCW.  I have the UCW setting stored in
> User1 memory and the LCW stored in User2 memory so that I can choose
> either.  The down side of this is that if I want to switch from upper to
> lower CW to eliminate closeby QRM, It takes about 5 or ten seconds for
> the User recall to complete.  When it does, the signal has to be tuned in
> again because of the ~500Hz shift due to the xtal filters requiring an
> offset correction, so to speak.  The only answer to this that I see is
> that any narrow xtal filters that you use in the radio must be exactly
> centered without resorting to any "fudge" factor."
> ==========
> After playing around with the center frequency adjustments for my filters
> I found that I could get them adjusted on properly and switch between UCW
> and LCW without having to retune the signal.  It turns out that different
> center frequency adjustments are *not* needed for both UCW and LCW and
> everything works out fine when they are adjusted properly.
> 
> Therefore, remove my statement about CW filter C.F. adjustments from my
> "down side" list.
> 
> Still learning this radio!
> 
> 73, de Earl, K6SE
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