The OMNI-VII disadvantage MAY have a lot to do with the RF gain setting of
the OMNI-VII and the PAs and transmitted signals of TX A, B, C, ....
Our local club has for years had many and often heated discussions over the
CW, SSB, or Digital station being heard by the others on different bands.
The one exception was the year we ran three OMNI-VI+ for FD.
With my OMNI-VII, I have both the 300 and 500 Hz filters installed and
seldom notice my neighbors AC9S and AA9LC unless they are within the
OMNI-VII's passband. AC9S is very active in both DXing and Contesting with
an ORION-II, Alpha amp and SteppIR beam. We both typically run our TenTec
transceivers with minimum RF gain and have found we can co-exist on the same
band and mode as long as we avoid transmitting within 3 KHz of each other.
Typical signal levels received on my OMNI-VII (and Flex-1500 sub-rx) from
AC9S are -30 to -10 dBm depending on the frequency and the antenna used.
73 ES DX,
Gary -- AB9M
-----Original Message-----
From: Richards
Sent: Wednesday, May 16, 2012 6:14 PM
To: Discussion of Ten-Tec Equipment of each Subject: Re: [TenTec] Omni VII
Filters
On 5/16/2012 8:58 AM, Rick - DJ0IP / NJ0IP wrote:
> The one place where the OM7 will be at a disadvantage is if you are trying
> to use it at a multi-multi station where you have at least 6 max legal
> power
> stations on the air simultaneously from a location the size of a football
> field,
I disagree based on experience. We run 2
Omni VIIs, an Orion II, an Omni VI, all in the same
room, and it is someone using a K3s that complain !
For some contests, the phone guys are in one place,
and the CW guys are 300 yards away on a big hill
in a field and the guys with the Elecraft gear complain
about intermod, not the TT guys. (I hope this does NOT
start a sub-thread about TT v Elecraft...)
Of course you gotta use passband filters, and stay off
the same antenna ... ;-) ... but I have NEVER
had intermod, interference, of any RF on my anything
under such extreme conditions.
Shoot, Rick... it might be better than you think ! ;-)
> Don't tell anyone I said this, but I even like it a wee bit better than my
> Eagle, but the Eagle has other advantages - size, weight, and simplicity.
YES - The design team at TenTec obviously thought
about what to put on the Eagle and what not to ...
trying not to obsolete any of the other products in
the line. I prefer the Omni VII over the Eagle because
it has more stuff on it... such as a receive only
antenna jack, two transceive antenna jacks, etc.,
but the Eagle presents a high performance option,
at a lower price for guys who don't want all that
extra jazz.
I have considered using an Eagle as a "second receiver"
for the Omni VII, and letting Carl's N4PY Pegasus
control program integrate the two as one - so I could
use the band scope display for the Eagle to work as
a panadatper for the Omni VII - click on it scope, and
both rigs tune to the same frequency. Cool. I use
a TT RX-320D for that now, but the Eagle would be
way better I think.
One of our Lunch Bunch guys is older than the sun,
and sometimes talks about getting out of ham radio
because it seems to be getting too complicated for
him -- so I keep recommending the Eagle because I
think it would be a huge performer, but a much
easier rig to run than the rest of the crop. He could
easily take it to Florida when he goes down for the
Winter. Stubborn old coot... but he is a great guy!
;-)
> *The exception would only be a top notch 160m operator with great antennas
> in a 160m contest. The rest of the time, the rest of the contests, the
> operator makes far more difference that the tiny bit of difference in the
> radios.
We used an Omni VII to work the CQ WW
contest... and came in 1st in Michigan... 1st in
Section 8... Fifth in US... 7th in North America...
and the only guys to beat us were all on the East
Coast with a slightly better shot at EU multipliers.
So, I am not worried about using the Omni VII in
a 160 meter contest.
> In my books, the Omni VII is the best all-around radio on the planet today
> for 98% of all hams.
That might be a slight exaggeration... the real
figures is closer to 95% of all hams... ;-)
====================== JHR =======================
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