I think in today’s technology, any amp recommending to run the radio at full
power and expecting the ALC to protect the amp is a joke. It may not be fast
enough to protect the LDMOS device.
SPE America has a history of pointing the finger at the radio having a power
overshoot as the cause of
After reading all the comments on this thread, I think that
Skip, K6DWG and Bob, K4TAX have the best theory of what
happened. Careful reading of the SPE 1.3K manual indicates that
the power output of the amp is sampled between the amp and the
internal tuner and that the recommended tune power
Depends on what flux was used. The current crop of "no clean" fluxes does
not come off well with isopropyl alcohol and leaves a white film on the
board. Other fluxes dont have this problem.
I use the same stuff we use at work for light rework which is the heavy
duty flux remover from MG Chemical.
I am aging out of making a radio work by making many settings on the K3.
I am considering to buy a Genovation Keypad for CW, RTTY, FT8 mode
settings and others such a band and other settings on the K3.
I need a mentor who is willing to guide me.
In return,I will sponsor you as a member of
I supervised a Metrology lab at a commercial nuclear power plant for 34 years.
We also performed component level repair to “safety related” equipment. We used
isopropanol applied with a stiff “acid” brush (cut the bristles short). Never
had a problem with NRC audits.
That being said, if you
On 12/31/2021 2:35 PM, Al Lorona wrote:
I think N7WS has shown that when that window transmission line gets wet, its
loss goes way up.
Yes. Excellent lab-quality experimental work done many years ago. It's
in one of the ARRL Compendiums of technical papers. He set up runs, got
them wet, and
Happy New Year,
I think N7WS has shown that when that window transmission line gets wet, its
loss goes way up. So some of the change you are seeing in rain/snow conditions
could be due to this higher loss.
Al W6LX/4
>
> My experience with antenna's changing due to moisture is with my
>
Professionals use 91% Isopropanol. You can get it at CVS cheap.
Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ
VP2EHZ
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of eda...@aya.yale.edu
Sent: Friday, December 31, 2021 2:53 PM
To:
Is there a consensus among builders of the traditional kits (K1, K2, etc)
about the best way to remove solder flux from a completed circuit board?
Some Internet sites recommend acetone, others say isopropyl alcohol. A few
tout their own product without saying exactly what it is. I remember
Iforgot about the attenuator and that it's set per band! Time to get
better acquainted with my KX3. ;-)
Thanks again to all who helped out and Happy New Year!
Bert VE3NR
On 2021-12-30 20:37, Bert wrote:
After putting up a new antenna for the WARC bands, I noticed that the
signals on the
Up for sale is a KRX3A partially assembled kit which never made into my
K3s which I still own.
The sub RX contains all parts which are included in the kit as per
installation manual parts list inventory.
This sub has the new KSYN3A synthesizer and set of following Inrad
roofing filters:
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