Tried to update the K3 firmware to 4.67. First, I updated the K3 Utility to the
latest version 1.13.5.9. The moment I hit Send All New Firm ware to K3, the K3
went to unresponsive state with MCU LD on the LCD and the TX LED flashing.
This happened before. That time I was able to snap it from
This reminds me about 25 years ago similar protests were sound when all
drafting was switching to computers and hand drafters were unemployed and had
to change profession. You cannot stop progress people. Local authorities have
to find different ways to fund their services. Local florist may w
Actually, something like this exists. KS7D made app "K3iNetwork" that allows
you to conduct remote CW/Digital QSO from iPhone or any other i-device
connected to internet . You just need your K3 connected to computer and
computer on internet. It is pretty much like having K3 utility connected t
Actually, my first point exactly is that hearing is subjective, the setting
that works for you may not be good for somebody else. And there is nothing
wrong with this. My other point is that from technical point of view, you
reduce significance of the DSP filter with this setup, which is fact
If it pleases you to use DSP set wider than roofing filter - by all means, go
for it.
I would not, however, clame objectivity based on my subjective experience or
somebody's valuable opinion and simplistic explanation , I perefer measurements
performed on good lab equipment. K8ZOA did some
I am pretty sure the DSP filter is effective only if it is narrower than the
roofing filter. In your setup the DSP filter is pretty much turned off.
Please, don't forget, the crystal filters in K3 are ROOFING filters, they are
protecting next IF stages and the DSP from strong near by signals
Richard,
SDR is essentially a direct conversion radio, so it is much simpler than
conventional heterodyne radio. If you want to use SDR_IF you will need
something like additional SDR, like S oftRock to convert K3 IF signal to I/Q
signals. I have this setup and it works fine, without any ima
The black box besides the battery holder and connectors has just one resistor.
If I remember correctly, you should be able to open the box and check. I had to
open mine because of failed solder connection. The wire used for "pig tail"
connector is pretty weak, it brakes easily. Check the wire
The drift rate of 1e-11 per month or so is regarded after one month of
conituous operation. The first month after turn-on is different. It usually
takes few days, sometimes couple weeks to reach the final drift rate. After
that it is pretty much constant slope. Every time you turn off the clo
There are many USB sound cards/adaptors on the market with stereo input. For
example, Griffin Technology iMic USB Audio D evice, about $23 on Amazon. stay
away from el-chea po dongles, these are mostly mono.
Igor, N1YX
- Original Message -
From: "Jens Petersen"
To: "Elecraft
Sounds like you may have problem with your power supply. Monitor power supply
voltage while you key the rig, see if it stays correct. If it does, check the
power cable and see if the APP connectors are fully engaged and not just
partially inserted. Try to key it with reduced power output level
First, check microphone gain. For the beginning turn it to the half scale.
Second, in the CONFIG menu (see manual) select correct microphone input. K3 has
front panel connector and back panel connector. In addition, if you use
condenser microphone (or electret) select bias to the microphone.
This is very valid question. Each method has advantages and disadvanages.
The GPS based reference needs antenna and ability to see satellites. If you
lose satellites you enter so-called holdover mode, when your stability depends
on local oscillator. In case of Trimble unit this will be free r
Joe> What's not clear? Key Out is the logical or of the key input
Joe> (straight key, internal keyer, PTT and VOX). A low on any of
Joe> those inputs/internally generated signals reflect as a low on
Joe> the Key Out whether the K3 is actually generating RF or not
Joe> (e.g. Test mode or CW
I don't know about the XIT, I don't use it that often. But when split is active
and VFO B is transmit frequency, it would be nice if the color of VFO B cursor
changes to reflect that.
73,
Igor, N1YX
- Original Message -
From: "Alan Bloom"
To: "Stan Gibbs"
Cc: elecraft@
Joe > This is the way Wayne designed the
J oe > radio.
Fine, if this cannot be corrected, some explanation need to be given in owners
manual or specs, so people know what to expect. As it is stated now, it is not
clear.
Joe > If you don't like it, get a YaeComWood and stop fussing
Joe
I reported this problem awhile ago. I've got no answer... I guess this is just
the way it is...
Igor, N1YX
- Original Message -
From: "Sy Botan"
To: elecraft@mailman.qth.net
Sent: Friday, March 11, 2011 3:40:36 PM
Subject: Re: [Elecraft] K3 transmit/amplifier relay
Most of
Eric,
David is first only in CQ Zone 3 part of U.S. There are 8 stations with 20
count in CQ Zone 5 part of U.S. and 10 stations with 20 count in CQ Zone 4 part
of U.S.
I am sure many of these stations used K3 to work VP8ORK.
73,
Igor, N1YX
- Original Message -
From:
I use CM500 for few months now. I don't hear difference between Heil proset and
CM500. Microphone is a bit different and TX EQ needed to be adjusted and mic
gain reduced significantly. But the main CM500 advantage, aside from being 3
times cheaper than the Heil, they are much more comfortable,
"The Ameritron ALS-600 has about a 15 ohm input impedance. Then they put a
series 35 ohm resistor for matching and reducing gain."
This is exactly right. The MRF150 MOSFETs used in ALS600 are rated at 20dB. I
know people who homebrewed similar amplifier without series resistor and have
ful
Sure, suite yourself. I happened to see soldering job done by some radio
amateures, especially on a wires that are not really suitable for hand
soldering (like cheap headphones). For most of them, adapte r is the way to go,
just safer. If you plug it once and leave it be on back side of the r
Incorrect. The adapter combines both channels into one. Nothing is shorted to
ground.
- Original Message -
From: "Ken Kopp"
To: "k igor" , elecraft@mailman.qth.net
Sent: Wednesday, October 27, 2010 12:48:57 PM
Subject: Re: [Elecraft] K3 audio speaker jack
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