I'm using a FLEX-1500 (http://www.flex-radio.com/FLEX-1500_Current.pdf) as a
separate receiver. While the FLEX-1500 can be slaved to the OMNI-VII
(frequency) using DXLab Commander (and the N4PY sub-rx mod), it is still
operating as a SDR receiver controlled by Power SDR and is NOT picking off
the IF of the OMNI-VII. As a result, I can listen to and view the received
signals close in, up, or down the band, using band stacking, band switching,
and / or any of the PowerSDR control functions to monitor my (or others')
signal. While I prefer the panadapter mode with .5 X, 1 X, 2 X, or 4 X
zoom, depending upon the application, there are also spectrum, scope, phase,
phase 2, waterfall, histogram, panafall, and panascope display capabilities.
In short the FLEX-1500 may not be a spectrum analyzer or service monitor,
but if one is looking for IMD trash or other signal components above the
noise floor (currently -130 dBm on 14.070 MHz @ 1900 UTC) it can do it.
73 ES DX,
Gary -- AB9M
-----Original Message-----
From: Robert Mcgraw
Sent: Monday, June 17, 2013 11:49 AM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] RF Speech Processor "TX IMD"
The only fallacy to this method is that one needs to look at the
transmitted signal several MHz away from the carrier frequency. A true
Spectrum Analyzer is about the best method.
My new spectrum analyzer has a tracking generator, it covers 9 KHz to 1
GHz and is available for under %1500. It was recently reviewed in QST.
While that price is more than many hams pay for their transceivers, it
certainly is more useful than many of the "ham" displays which cost less.
73
Bob, K4TAX
Those who have a SDR running PowerSDR or similar can use the panadapter
and
other functions to look at received signals and if optioned to receive
during local transmit can also look at their OWN transmitted signals.
N4PY
developed a mod which works well with the OMNI-VII, providing a real-time
look at one's transmitted signal.
73 ES DX,
Gary -- AB9M
-----Original Message-----
From: k6jek
Sent: Monday, June 17, 2013 10:33 AM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] RF Speech Processor "TX IMD"
I've been a ham since 1962 long before incentive licensing. There were
plenty of terrible signals on the band back then.
CW signals were raspy, chirpy, clicky, and drifty.
AM signals were FMing, had RF in the audio, had audio distortion, and
drifted,
SSB signals had terrible opposite side band and carrier suppression, bad
audio and drifted.
Splatter was common.
Harmonics radiation was common, broadcasting on several bands at once.
Spectrum displays are becoming common on high end radios. This may be a
boon
since others may tell you when your signal is bad. Of course they'll be
wrong because they don't know the definition of bandwidth but they didn't
know it fifty years ago either.
Jon
On Jun 17, 2013, at 12:14 AM, Charles P. Steinmetz wrote:
Rick wrote:
Guys, I maintain there are a lot less lids and a lot more bad radios
then
you think!
Any ham who takes for granted what his or her radio is doing, without
measuring it him- or herself and correcting it as necessary, IS a lid.
And yes, unfortunately, I know that I have just described 85% of all US
hams. I would much prefer that those 85% had never been licensed, or
had
been required to learn and demonstrate genuine technical proficiency to
become licensed (I don't care a whit about whether they know code).
IMO, we should get rid of the whole VE structure and go back to
examinations by an FCC field engineer at an FCC field office using
tests
that have not been made public. Ideally, including some hands-on
operation and troubleshooting. Putting testing in the hands of people
who
have an interest in how many new hams there are is the worst possible
way
to run things. Having a limited number of publicly-available test
questions is a deplorable farce.
Best regards,
Charles
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--
Disclosure:
I am a Tentec Ambassador and compensated according to the Tentec
Ambassador plan. I serve as a volunteer beta test person for the Omni
VII, Eagle and Argonaut VI products. Otherwise, I hold no business or
employment interest with Tentec.
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