There are two different types of night vision. Light amplification and
thermal imaging. Since the power company used IR to find the problem,
the devices used were likely thermal imaging devices. Light amplifiers
must have some light to work, and I don't believe they pick up thermal
On 12 Mar 2007 at 4:04, [EMAIL PROTECTED] wrote:
Nice work, Kevin. This is about how many Q's I had in all of EQP this
year :)
I didn't get round to looking into EQP at all this year.
The main reason is of course that those of us in the UK (and VE land)
were participating in BERU (or the
I wonder if those that see no results from the KNB2 have forgotten to
remove a jumper or something?
I could not operate without the KNB2.
I have line noise that runs 20 dB over s9 at my location on 80 meters
(almost as bad on 60, 40, 30, and 20) without the KNB2. Operations of
any kind would
All,
I haven't seen many reports back from the EQP. How did you do? I had #5670
operating park bench portable with a random wire in the trees. While doing a
good job promoting amateur radio, I did not make any EQP QSOs!
I was able to make several Qs with stns in the OKQP so I know I was getting
Hi Bob:
I wonder if those that see no results from the KNB2 have forgotten
to remove a jumper or something?
I could not operate without the KNB2.
I have line noise that runs 20 dB over s9 at my location on 80
meters (almost as bad on 60, 40, 30, and 20) without the KNB2.
Operations of any
with the FCC becoming more and more deaf to our pleas to fix broken
powerlines and the like ; wouldn't it be great for somebody ( hello
Larry LP Jack PAN)
to make a NB widget hat was tunable width /depth and whatever
parameters are needed...maybe using his PAN box to examine the junk ???
I
What I was referring to is the common circuits used in most receivers of
olden days. (Tube era) Most receivers depended on the AGC level for signal
strength indication. At best a large approximation and some wishful
thinking. Not only do 50 microvolt (if that's your standard) S-9 levels
I'd appreciate suggestions that might help me isolate a problem that
I believe to be in the KPA100. Receive is fine on all bands.
My K2/100 has been working wonderfully for three years. Now,
suddenly, a problem appears on both on low and high power settings on
160-10mtrs. K2 Display
40m conditions were not good here during the weekend except for European
QSOs and only two EQP callers heard briefly on 40m from the States, none
from Europe. A fair number of Stateside stations heard working the OK QP on
40m but only out to Arizona / Texas, nothing from the West Coast on
Jack,
Since the problem shows up on both low and high power, you are correct in
believing the problem may be with the wattmeter, but do some preliminary
chaecks first. The only other things that could be wrong are the Low Pass
Filters (unlikely if it worked for 3 years) or the relays not
Perhaps something like the business end of an Evasive Noise Blanker? Jack's
PAN box would be a great addition for hunting the rubbish.
73,
Geoff
GM4ESD
- Original Message -
From: Bill NY9H [EMAIL PROTECTED]
To: Tom Hammond [EMAIL PROTECTED]; elecraft@mailman.qth.net
Sent: Monday,
I just submitted my score summary to the scorekeeper. Only nine QSO's this
year: four on 40m and five on 20m. Heard no EQP activity on 80m. Lots of
competition from the OK QSO Party-- those guys are loud here in Missouri on 80
and 40m!
W1SOC had an oustanding presence, and he was the only
Actually, a swept spectrum analyzer is a very difficult machine to use
for tracking noise, unless the sweep is triggered with the power line
zero crossing.
If you look at a pulsed waveform from broadband noise with a spectrum
analyzer in free run mode (the normal operating mode) you may see
Night vision goggles work quite well in some cases. I mentioned it to a
friend in the Guard and the 1st Sgt at the local armory decided to have
a short training session. The troops spotted the two perpetrator
insulators within 2 mins just by looking around. PGE came out with
their IR device
Fred Jensen wrote:
Night vision goggles work quite well in some cases. I mentioned it to
a friend in the Guard and the 1st Sgt at the local armory decided to
have a short training session. The troops spotted the two perpetrator
insulators within 2 mins just by looking around. PGE came out
Fred,
Was this at night? Do you think consumer grade ones would work?
Tnx es 73,
Leigh/WA5ZNU
On Mon, 12 Mar 2007 11:58 am, Fred Jensen wrote:
Night vision goggles work quite well in some cases. I mentioned it to
a friend in the Guard and the 1st Sgt at the local armory decided to
have a short
Hello,
Going to be working close to the Appalachian trail on Tuesday, so I plan on
going to work early.
I will be on the AT north of Strausstown, PA south of Rte 183. I should be
on the air by 19:00 UTC.
K1 @ 5 watts and a vertical.
15, 20, 30 40m.
I will start out on 15 meters and call
Sandy - You wrote:
Circuitry wise, an AGC/AVC free S-meter is an oxymoron! Can't
have one
without the other.
Well, I have late 1950s Hammarlund HQ170 whose S-meter works just
fine with the AGC/AVC turned on or off. As far as I have been able to
ascertain, the S-meter functions
Understood. I had been pondering a trigger derived from the noise receiver's
output pulses but with memory and variable delay added to freeze the
display, and allow one or several output noise pulses to be displayed.
Jack Smith wrote:
Actually, a swept spectrum analyzer is a very difficult
Dr Megacycle wrote:
Well, I have late 1950s Hammarlund HQ170 whose S-meter works just
fine with the AGC/AVC turned on or off. As far as I have been able to
ascertain, the S-meter functions identically with or without the AGC/
AVC turned on. It was designed to do so.
For CW signals the solution was easy. One added a hard limiter to the
audio channel. If a really strong signal was encountered without warning, it
was clipped of at some preset maximum volume (below the threshold of pain,
hopefully). Most operators used the limiter at all times in case a huge
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