Hi - I did the same soldering-iron corner meltdown,
on my K2 #54xx.
I build golf clubs, for me and friends on the side -
and have my dual-bottle set of golf club shaft
epoxy adhesive. I figure if it can hold a driver
head on a grahphite shaft - when a big bruiser like
me hits the ball - it can
EPOXY 2-Part A/B Adhesive - more .
When equally mixed - it generally should not and
will not run. That is why it worked so well at
sealing over the 1/8 hole I burned in the top
corner of my K2 Latching Relay. When adhesive is
mixed - just carefully lay 1 nice drop of the
epoxy mixture to
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Don Wilhelm wrote:
Ron,
The problem is that your crystals have a Q which is high and they are
more difficult than the average to pull down in frequency.
Your best recourse is to pad the crystals down in frequency a bit. You
can first try a
Fred,
I certainly will not disagree with your success, nor that the epoxy will
provide a good seal.
BUT, you were fortunate that the relay did not have any internal damage.
When the case of a relay is melted (even a small amount), there is a
chance that the inside of the plastic can be
Ron,
Yes, I see that your padding attempts were not successful, and the
proper conclusion is that you have something other than the crystals
that is incorrect.
The BFO is similar to any VXO - and the components involved are the
crystals, the inductor and the capacitors. In this case, the
Last year, my K2 was used on our CW station for just the Natural Powered QSOs
= we had a guy on a bicycle driving a generator to create the power and the K2
was perfect.But when he finished and the K2 was swapped out with the brand
X radio that station captain bad brought, the operator
Bernie,
First be certain you have adjusted R4 for full clockwise rotation - and
if you still have low power, yes, make the 2 resistor changes for the
KX1 power mod.
73,
Don W3FPR
Bernie Gardner wrote:
The only problem is that the power out with a 13.4V supply, as measured with
the DL1
At 07:04 AM 6/26/2007, Don Wilhelm wrote:
BUT, you were fortunate that the relay did not have any internal
damage. When the case of a relay is melted (even a small amount),
there is a chance that the inside of the plastic can be distorted
and will interfere with the movement of the contacts
Scott,
That problem is caused by a failure of the power output from the KPA100
to be reported back to the K2 microprocessor.
Check the wattmeter section of your KPA100. First check to be certain
T4 is installed correctly (check the color of each lead), and be certain
that the leads are
I've searched and Googled all over for this, but can find nothing. I
have both a benchtop frequency counter (from a Hamfest w/ no probe),
and the NorCal FCC-1, and I need a frequency probe for both of them. I
have some RG-174 and BNC connectors.
For the benchtop counter, I presume I connect
It looks like my battery has seen it's best days. Any
recommended local venues for replacements? Better
alternative batteries?
Cheers,
Julius
n2wn
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Greg
FB on your improvision here.
The reason for the capacitor is to provide a DC block,
so if there is DC on the circuit being measured, it
won't get into the counter.
A counter probe is a bit more forgiving than trying to
measure a signal level - you merely need to get enough
RF energy to
Don,
I just read your reply to Gregg. I am just starting to
build a KPA100, purchased May 2006. I read your
answer, and ordered the KPA100UPKT upgrade. My
question concerns your reference to C31 needing to be
.22 uF...My manual (Rev C) and the Rev E manual both
show it as .033 Uf, I believe. Did I
Hi Jeff:
Check Errata Sheet E-2 for the KPA100. New value is .22μF (“μ22J63”) 63V
73,
Ken K3IU
jeff martin wrote:
Don,
I just read your reply to Gregg. I am just starting to
build a KPA100, purchased May 2006. I read your
answer, and ordered the KPA100UPKT upgrade. My
question concerns your
The current errata is E3. E2 is also correct to answer Jeff's question.
E3 removes reference to the bodies of some RFCs as being tan. They are no
longer identified using body color: only by the color stripes indicating
their value.
Ron AC7AC
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Hi all,
Will the K3 DSP software include a delay in the transmit audio chain to
prevent the missing first syllable issue that is common with other VOX
systems?
Apologies if this has been answered but I looked in the FAQ and previous
posts and couldn't find it.
Regards,
Paul M1PAF
Will the K3 DSP software include a delay in the transmit audio chain to
prevent the missing first syllable issue that is common with other VOX
systems?
That is our intent.
73,
Lyle KK7P
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Thanks Lyle.
-Original Message-
From: Lyle Johnson [mailto:[EMAIL PROTECTED]
Sent: 26 June 2007 20:26
To: [EMAIL PROTECTED]
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 VOX question
Will the K3 DSP software include a delay in the transmit audio chain to
prevent the missing
Hi Gang,
Used my trusty K2 at the K2ZR 2A-Battery FD at the Buffalo Lighthouse
again this year. It bagged the lions share of our 1166 HF CW QSO's.
Murphy struck at the opening bell. In a nutshell, we had the CF ladder
dipole connected to ANT1 and the yagi to ANT2. The first op noticed poor
Mark,
The only electrical thing that could cause a difference between ANT1 and
ANT2 is the relay contacts of KAT2 K18. Other than those contact
closures and the PC board traces there is nothing different between ANT1
and ANT2. You might want to consult the schematic and do a continuity
Will the K3 DSP software include a delay in the transmit audio chain to
prevent the missing first syllable issue that is common with other VOX
systems?
That is our intent.
One rig that uses a fixed audio delay effectively to avoid the missing
first syllable problem is the Kenwood TS-870.
Will the K3 DSP software include a delay in the transmit audio chain to
prevent the missing first syllable issue that is common with other VOX
systems?
That is our intent.
If an audio delay is used in the K3, I suggest that it should be
possible to adjust or at least disable it as a
Anyone have a KSB2 for sale? If so please let me know what you have and
the price to include priority mail shipping to zip 45324.
Thanks
Tim
NZ8J
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Tim,
Have you tried www.elecraft.com? They have several kits available for
sale. Price is $99 plus shipping.
73,
Don W3FPR
NZ8J wrote:
Anyone have a KSB2 for sale? If so please let me know what you have and
the price to include priority mail shipping to zip 45324.
Thanks
I asked this earlier but suppose it was lost in the early frenzy so I
will pose the question again along with a couple more.
The basic question concerns digital voice modulation. There is no
current standard but AOR is using an open protocol from G4GUO. Unlike
SSB, digital voice will require
Thanks all, for the clarifications. I just started the
build, so I am not so far into it I have to remove any
components. I have printed the latest revision manual
and errata and will carry on using it.
Thanks again!
Jeff
N7KRT
K2 #5471
Can anyone give me the shape factor for the Elecraft supplied, 5 pole, 2.7 kHz
filter?
Thank you
Ray K3RIZ
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Subscriber Info (Addr. Change, sub,
This reflector is a valuable first stop in troubleshooting.
Is there any experience with the accuracy of the resistance value stated
in the manual, for resistance measured at the U1 pin 2 (and same values
for J1 pins 16 17) to ground as 22.6 kOhm rather than the suggested
range of 25 - 35 kOhm?
That sounded familiar. I looked back at my first post to the list which was
essentially the same question. I got 22.5 instead of your 22.6. The response
was that it was ok, and in fact the radio has been fine. Between component
variation and voltmeter accuracy I guess the allowable range in
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