I've been looking at foldable solar cell supplies. They come in
approximately 10, 15, and 20 watt sizes. The cost difference between
the 10.4 (.75 amps) and 15.6 (1 amp) watt units is $20 and the
difference between the 15 and 20 (1.4 amps) watt units is $45
respectively)
I can see that
Dear Elecrafters,
After weeks of repair work we finally found out what was wrong with the 10 Watt
pa of my K2.Thanks to all who helped us, epecially Don Williams and Gary from
Elecraft.
The former owner of my K2 also helped us a lot.He said,that we needed the
original Elecraft PA transistors
Chris,
Please explain about why those transistors with the same number did not work.
Is the spec the same?
Is the pin layout different?
I'm confused to read this.
Thanks
Arie
JE1RYS
- Original Message
From: Hans-Christoph Scheiblberger [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Bill W5WVO [EMAIL PROTECTED] wrote:
I've read in a number of places over the years that mid-latitude
sporadic-E propagation does seem to be inhibited by large-scale
geomagnetic disturbance, just as HF propagation is -- albeit perhaps by a
different mechanism. If the mechanism is indeed
ESD damage does not always show up immediately. ESD can stunt the life of
components.
Instead of lasting 5 or 10 years, you may only get a few years out of them.
I have had a lot of training in the military on ESD, and they spend big
bucks on equipment
And training. The avionics building I worked
Thanks Carel!
That's a nice spreadsheet. I'll have to see what works
best for my purposes and see what crystals I have in
the junk box.
Appreciate the effort!
Cheers,
Julius
n2wn
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You must be
In some manufacturing you cannot get through the security doors into the
assembly area unless your boots and body strap pass the ESD test at the entry
point.
David
G3UNA
From: Mike Short [EMAIL PROTECTED]
Date: 2006/12/20 Wed PM 12:24:56 GMT
To: Elecraft@mailman.qth.net
Subject: RE:
Sorry to be a wet blanket, but from my current standpoint, I'd be grateful to
find just the one spurious signal from the KPA.
I have literally dozens of spurii on all bands that are S2 or greater. Some
read S9+40 and would read higher if the S-meter could indicate that.
They all emanate from
Hello All,
There seems to be differing opinions about whether the Heil HM-4
and HM-5 provide enough output to properly drive the K2. Looking through
the HRO catalog, I found that Heil now has several electret mikes
(HM-iC, iCM, etc.) which they say gives higher output, but they also say
I apologize for using the bandwidth, but it is the only way I know to
see what is working for me g.
73,
Ken
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Hello Solar fans,
Had been regularly communicating with Don Brown KD5NDB for a while on a sloar
project.
Haven't received any response from my latest two e-mails on Dec 9th or the 13th.
Hope all is OK. Dose anyone know if there's a problem?
Thanks...Ken W2GIW
That is, is the 15.5W array (1 amp) a much better match to the 7 Ahr battery
then the 20.8W (1.4 amp) array? Or should I go for as much solar amps as I
can afford that will fit within the physical contraints of backpacking and
kayaking?
Paul - I've been using solar power while camping for
Thomas Beltran wrote:
Or should I go for as much solar amps as I
can afford that will fit within the physical contraints of backpacking and
kayaking?
Yes!
But I've used a few and found the 10watt Uniflex panel to be a good size
vs output. It puts out abt half of rated (500ma) during
Hi Ken:
Had been regularly communicating with Don Brown KD5NDB for a while
on a solar project.
Haven't received any response from my latest two e-mails on Dec 9th
or the 13th.
Hope all is OK. Dose anyone know if there's a problem?
Don IS OK!!! I spoke with him a week or so ago,
Hi
I am still here :-)
I must have missed your e-mails sorry
Don Brown
- Original Message -
From: KEN [EMAIL PROTECTED]
To: elecraft elecraft@mailman.qth.net
Sent: Wednesday, December 20, 2006 8:40 AM
Subject: [Elecraft] Don Brown the Solar Controller Man?
Hello Solar fans,
Had
Bob,
Unlike other radios (Icom, Kenwood, Yaesu, etc) that have their own method
of wiring the mic jack and make it inconenient to impossible for the user to
change it, the K2 has a microphone configuration header so you can rearrange
the mic jack wiring to suit any 8 pin microphone configuration.
I would like to purchase a 2T Gen and a XG2 already built, I have no time
for construction at this time.
Please send response and price to [EMAIL PROTECTED]
Thank you
Bob
W4rkn
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You must
Hi Bob,
The Heil iC elements work perfectly with the K2. They use the same
element that we used in the MH2.
(As a side note: The Heil HC4 and HC5 elements put out about 8 dB less
than the industry standard used by almost all other ham radio
manufacturers, hence the low gain reports in some
Bernie,
Yes, the RTTY filter settings are handy.
I would recommend you set the RTTY filter widths to FL1 = OP1, FL2 = 1.00,
FL3 = 0.70 and FL4 = 0.40
Set the FL1 BFOs for RTTY and RTTYr to you LSB and USB FL1 settings. The
other filters should be centered on the same audio frequency, usually
If PC5M's calculations are correct, and these birdies
are caused by mixing products of the 4.9136 MHz IF
crystals in the K2 and the 18.432 MHz bias supply
crystal in the KPA100, and assuming his spreadsheet
calculations are correct, it seems that a crystal at
15.8735 MHz (+ or - about 9.5 kHz)
There have been a couple of inquiries lately about using Pelican cases to
pack Elecraft transceivers for travel.
So I put up a couple of pages on my Elecraft K1/Pelican portable
station on the web this morning.
http://world.std.com/~rice/ham/projects/K1-GO-KIT/
I'm using a new HTML template,
Paddlette seems to be gone?
Anyone have a Paddlette for the K1 that screws to the stand that they are
not using? Let me know if you want to sell it.
Thanks in advance.
Ron
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You must be a
When we designed the crystal oscillators in question (KIO2, KPA100), we
did extensive testing using dozens of crystal frequencies to find the
optimal ones. The frequencies presently in use are as good as anything
else that might be tried, I believe, unless you have a specific issue
that can be
Hi Ben,
My assumption is that the birdie is due to mixing of the VCO with X-tal
frequencies. At certain a (VCO) frequency it will be such that this mixing
product will produce exactly the IF frequency-- a birdie is born. Of course
will this certain VCO frequency correspond with a RF frequency
Bob, and the List:
I bought, and still use, a Heil MH2 electret mic when it was offered for
sale through Elecraft; then it was called the Heil MH2. That was several
years ago as I recall.
The MH2 works FB with plenty of output and good-quality audio according the
reports I get on the air. I'm
My 2c worth. I have posted on this reflector before my experiences with ESD
and my K2 as I was building it. First, understand that I live in the
mountains of Colorado at about 8200' ASL. It is extremely dry here all year
round and especially in the winter months when the RH rarely gets
I recall as a kid reading stories (in the science books) of static
electricity with cats' tails, and of combs picking up bits of paper. Could
never duplicate those occurrences, and hadn't the faintest (demonstrated)
idea of what people were talking about. Just accepted what I read as fact
Hi Eric --
Since I have a Heil ProSet with the HC5 element, and I get outstanding
reports with it on Kenwood and Yaesu rigs -- my question is, if I connect it
to a K2, will the 8 dB difference in output level cause any problems, or is
there enough residual mic gain in the K2 to make up for
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