[TenTec] Orion Off Frequency?

[Barry Gross]

Hate to provide a canned response Eric, but I'd start with a master reset.

I don't think you should need a 300hz rolloff.  The HC-4 cartridge has
a pronounced roll-off already.  I might ordinarily suspect those xtal
filters, but I assume the Orion uses 100% dsp for tx filtering so that
wouldn't explain it.

It might be worth doing some comparison with a 2nd rig in the shack. 
Check the freq calibration between rig #2 and Orion by tuning in same
stations so you'll have an accurate gauge.  Now transmit ssb into a
dummy load and monitor yourself on the 2nd rig and check  that the
Orion tx freq isn't offset somehow and also listen to the tonal
quality of your signal.

That should get you pointed in the right direction.  If you want, drop
me a line and we can qso on 160M ssb in the evening and I'll give a
listen.

73,
Barry N1EU


On Tue, 01 Mar 2005 21:40:57 -0500, Eric Rosenberg <wd3q at starpower.net> wrote:
> [I've cross posted this to the Ten Tec Reflector]
> 
> When running this weekend during the CQ 160 SSB contest, it seemed that
> everyone calling me came in low by about 500 hz or so.
> It was rather consistant and very weird.
> 
> I sent and email to K3ZO asking how I sounded. Fred came back with the
> following:
> 
>   "Your voice was very low pitched and your audio sounded somewhat
>   metallic, though actually very distinctive and I thought kinda
>   cool.  But maybe some people were trying to make you sound more high
>   pitched by slope detecting a bit."
> 
> My voice is low-ish, but it appears that I'm doing something wr
> 
> I'm using a Heil ProSet with HC4 element, and the TX settings on the
> radio were at the defaults. My filter lineup is all INRAD:
> 
> 756 (2.4 KHz, replacing the TT filter that comes with the radio from
> the dfactory -- I had this in my Omni 6+)
> 761 (!.8 KHz)
> 762 (600 hz)
> 
> TT suggested I change the TX rolloff to 300 hz (the max).
> 
> Any other suggestions?
> 
> Thanks in advance,
> 
> Eric W3DQ
> Washington, DC
> 
> 
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