[TenTec] RE: Omni VI Plus freq. readout and killing the messenger

[Robert & Linda McGraw K4TAX]

John;

I initiated a REPLY ALL here so this is not absolutely directed to you but
as general information to all on the reflector.

I have a recent OMNI VI+ which has a TXCO.  I run a lot of PSK31 and RTTY.
I don't have a drift problem that causes a problem.  I don't have to retune
nor do I have to tweak the PSK31 tone to stay on the QSO.  I guess I'm just
lucky and have an "outstandingly stable" OMNI VI+.  Also, I'd comment that I
run the rig conservative on both modes.  Typically 25 watts output.  If I
want some power I add SOME Serious POWER with a BIG legal limit class C
continuous duty external amp. (It's an old 1KW AM broadcast transmitter.)
Or the table top Centurion provides some 350 watts output with 25 watts of
drive on 20M.  In most all cases, the 25 watts from the Omni is more than
adequate.



73
Bob K4TAX

----- Original Message -----
From: "John Clifford" <johnclif@ix.netcom.com>
To: <tentec@contesting.com>
Sent: Sunday, October 06, 2002 9:14 PM
Subject: [TenTec] RE: Omni VI Plus freq. readout and killing the messenger


> I for one would like to thank Dave Hammond for his posts.  The symptoms he
> describes are exactly what I have encountered, and his conclusions to its
> causes are logical.  I have gone back thru the archives, read about his
> modifications, and have ordered the BFO crystals and a new TXCO.
>
> There _IS_ a problem with some Omni VIs suffering from drift during
transmit
> in high duty cycle modes.  I agree that this drift is probably
> inconsequential for CW and SSB since the conditions that cause it do not
> happen in these modes... but it is a real pain with the newer HF digital
> modes and can cause problems such as interference to other hams (due to
> 'walking' down a crowded band during a QSO) and the inability to hold a
QSO
> in certain tuning-critical modes (like MFSK16) that require the
transceiver
> to stay within a 5 Hz window without constant manual retuning.  Sure, I
> _CAN_ use the tuning knob... but I shouldn't have to be CONSTANTLY using
it
> or have to continually re-select the signal in my waterfall during a QSO
if
> I can fix/change/modify something inside my rig to eliminate this.
>
> I posted the original query that started this thread.  The resultant
> informative (and some of the argumentative) replies are exactly what I was
> looking for when I made the original post.  The value of ANY reflector is
> the ability for those of us with less knowledge/experience to be able to
tap
> into the knowledge/experience of others.  IMO, there is also value in
> reading questions and responses to questions posed by others.  I am always
> learning something from the reflectors I belong to.
>
> But let's not attack a ham who has come up with a possible solution to a
> problem, even if we disagree with his solution or the need for it.  If the
> fix doesn't matter FOR YOU, then don't do it.  I personally plan to keep
my
> Omni VI for a while, and if I can tweak it and get rid of a few annoying
> idiosyncrasies, then so much the better.
>
>  - jgc
>
> John Clifford KD7KGX
>
> Heathkit HW-9 WARC/HFT-9/HM-9
> Elecraft K2 #1678 /KSB2/KIO2/KBT2/KAT2/KNB2/KAF2/KPA100
> Ten-Tec Omni VI/Opt1
>
> email: kd7kgx@arrl.net
>
>
>
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