Steve Ellington wrote:
U.S built rigs have been first for most inovations.
I don't know if anyone's mentioned one of the first all solid-state ham
receivers, the
Davco DR-30, made in Florida.
http://www.w8zr.net/vintage/receivers/davco.htm
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
to use it illegally. I said It was designed to
appeal to
CBers operating with illegal power and VFOs. There's a difference.
I bet Eric is coming along to squash this thread soon!
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
when the
DX is
working stations that you can't hear.
I know that I have spent long periods in pileups without results until I get
the pattern.
Then -- blam, one shot.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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it?
If you are trying to transmit SSB, are you sure the correct mic connector and
bias setting
is selected?
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Vic, K2VCO
Fresno CA
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while diversity is in effect, but you *can* operate SPLIT, using REV or
A/B to
check the transmit frequency.
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indication is
based on a simple RF voltmeter, and is very sensitive to the impedance of the
load. If you
do not have a very accurate 50 ohm dummy load connected, the K2's output meter
will be
inaccurate.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
.
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Vic, K2VCO
Fresno CA
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, a racing bicycle and not a 'cruiser bike'.
Which doesn't mean that it's 'uncomfortable'. Try riding 100 miles against the
wind in
hilly terrain on a cruiser bike.
So either you like it for what it is or you don't.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
, the amount of gain
reduction would have to be adjustable (but not in steps of 0.25 dB!).
I think this is an excellent suggestion, and if -- as I think -- it
wouldn't be very hard to implement, it would provide a lot of bang for
the buck (that is, Wayne's time).
--
73,
Vic, K2VCO
Fresno CA
http
. But
cleaning up some of the sidetone artifacts heard when the band is noisy
or crowded would go a long way toward obviating the need for this!
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Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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You
as for the guy who
wants it to be a kind of semi-QSK.
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Fresno CA
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Milt, N5IA wrote:
All,
I am wanting to change the audio gain controls for the main RX and
the sub RX so that they perform in the common audio gain and balance
control configuration.
In the CONFIG menu change SUB AF to BALANCE.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
Fraser Robertson wrote:
snip
K2VCO shielding kit
Will it keep me from hearing those DX cops?
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Fresno CA
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a
transmitter, causing their headphones to explode?
How many times have I wished for that in a pileup!
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Fresno CA
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insanely jealous!
Actually, I am pleased.
At last I will be able to work Europe on 160!
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Vic, K2VCO
Fresno CA
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uses as a rental investment. And, oh yes, he put a second tower
and some guy anchors for his main tower in the back yard. The tenants don't mind at all.
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Fresno CA
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connector on the KAT3. But by using the BNC connector, I free up
Antenna 2 for a second transmitting antenna!
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Fresno CA
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RTTY.
Because of 1 2 it's not so cheap.
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Fresno CA
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,
Vic, K2VCO
Fresno CA
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.
Sorry...this stuff happens too fast for me to keep track of it!
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Fresno CA
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as a
transmitting antenna, and possibly without a tuner if I had lengthened it a bit.
The interesting part is that it doesn't need to be straight to work. This could be very
useful in a real emergency.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
to
install!
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Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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Barry Simpson wrote:
What is new/ old QSK ? I cannot find such a menu/ config setting.
Hi Barry,
Go to CONFIG and select CW WEIGHT. Then press the 3 key on the numeric keypad
to toggle it.
It doesn't seem to make much of a difference for me.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net
and L7 on the KIO3. These are RF chokes in the mic return lines.
I have not done this yet myself, since I am a CW guy! But I'm sure Elecraft support can
provide you with detailed instructions for doing this if needed. The mod has solved RF
feedback problems for several K3 owners.
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73,
Vic
,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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Fresno CA
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is that I can still hear more than I
was able
to work ;o)
QSK artifacts exist when there are loud signals or noise. Wayne promised that he would
look at this when he had some time :-)
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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to pick out a call that is being sent
over and over.
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Vic, K2VCO
Fresno CA
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So, can the filter controls be unlocked please. This will be more
pleasant for operating.
This is probably the single most requested firmware change by the field test group. Wayne
has promised that he will take care of it. So it's just a matter of time!
--
73,
Vic, K2VCO
Fresno CA
http
dB!
If you want to use the RX EQ for this the best way to do it is to leave
the desired bands at 0 dB and *reduce* all others by the amount of
'boost' that you prefer.
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Vic, K2VCO
Fresno CA
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to boost these ranges, then the narrowest
filters will *always* show a steep drop in gain whether NR is on or off.
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Vic, K2VCO
Fresno CA
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-in delay. Both the K2 and the K3
do have such a delay (the K2's is a bit longer than the K3 and not
adjustable).
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Vic, K2VCO
Fresno CA
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in the CONFIG menu to HIGH. If that doesn't work, something's wrong.
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gain.
This implies that if I am listening to a very weak signal close to the
rx noise floor (at least at my urban QTH this is rare and would only
happen on the higher bands), it would pay to activate the sub-receiver
in diversity mode even with the same antenna!
--
73,
Vic, K2VCO
Fresno CA
that Elecraft has/have not indicated that they will
implement it or if so, when.
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Vic, K2VCO
Fresno CA
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opinion they work well and are extremely convenient.
But then, I like PL259/SO239's too.
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Fresno CA
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careful about this, because of the need for the key out
to be activated a few ms. before RF appears and to stay active until
after the RF is gone. This is necessary to prevent hot-switching of
amplifier relays which at best will create key clicks and at worst will
destroy the relays.
--
73,
Vic
.
Then Lyle or his grandson would have to make appropriate code changes
for it. The K3 Utility would (hopefully) detect the board level and load
the appropriate code.
Big deal!
--
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Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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sticker -- I used a piece of a shiny red
bumper sticker -- to fit over the face of the V M key. This has
completely solved the problem -- my brain only sees M V so that's the
one it chooses. But I have V M available immediately if I need it.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
Don Ehrlich wrote:
What is new here? I have been switching bands this way since I received
my K3 last January.
What's new is that you can now go to the last frequency used in any band
-- just like band up/down -- rather than to a particular memorized
frequency.
--
73,
Vic, K2VCO
Fresno
one for me. My 40
meter antenna is a mere dipole at 40 feet, although I admit I was
running 800 watts. It was still a thrill!
--
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Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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You must
. Maybe the
coastal station even ran full duplex, which is possible when the
transmitter is located miles from the receiving site. Now that is the
ultimate in QSK -- even the K3 can't do it!
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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and a dummy load. If the band noise increases when the antenna is
connected, then a preamp would not improve your ability to hear weak
signals.
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73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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properly.
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Vic, K2VCO
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. The instructions are good and
the secret is just to take your time and follow them.
If you assembled the K3 in the first place you should have no trouble.
There are no 'issues' with the KRX3, and if you have a problem Elecraft
will help you out.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net
of these
boards it's a good idea to do this.
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Vic, K2VCO
Fresno CA
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William Evans wrote:
Thanks Lyle, but I have already tried that, and the K3 is NOT in test mode.
Check CONFIG TX INH. If it isn't off and the TX INHIBIT pin is floating,
it might cause the symptom you have.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
:-)
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Fresno CA
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the TX
icon isn't flashing -- that could mean that you are in Test Mode.
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Vic, K2VCO
Fresno CA
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be grounded or
high for reliable operation.
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Vic, K2VCO
Fresno CA
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ANT OUT connection, you can feed the K2
from this. It would be best if you have the 160 M / RX Ant option on the
K2, because then you can use the RX ant input on the K2. You definitely
do NOT want to transmit into the K3's RX ant output!
--
73,
Vic, K2VCO
Fresno CA
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about 3 w, ten is down to 2 watts.
Receiver sensitivity is OK.
Any words of wisdom will be greatly appreciated.
73
Ozzie, w6icm
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Vic, K2VCO
Fresno CA
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You must
.
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? YMMV, apparently mine did!
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have to
be something like if the mode is different, also copy the b/w,
otherwise not.
Confusing.
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Vic, K2VCO
Fresno CA
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be done in a rig control program). If I could define a
macro for split, here is what I would do (in CW mode):
Split on
Subrx on
Copy freq and mode to subrx
Set subrx bandwidth to 1 kHz (leave main as is)
Move subrx up 2 kHz
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Vic, K2VCO
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.
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seconds, which is an eternity. And 'too light' is very hard to do with
the K3's buttons.
I think part of the issue is that the K3 is different from what one is
familiar with, so it takes some getting used to. This in itself isn't a
problem.
--
73,
Vic, K2VCO
Fresno CA
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. bandwidth to hear a weak DX station
while the sub rx is set to 1kHz. to find the station he is working more
easily.
On the other hand, sometimes I want them the same, and I can chose just
by tapping the key once or twice.
--
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Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
. I'm easy :) Thanks for your
input.
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Vic, K2VCO
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.) and
then when you hold REV or tap A/B, all the parameters change. This is
how you work a pileup (at least, this is how I did it) when you do not
have a subreceiver.
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Vic, K2VCO
Fresno CA
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board. It looks as if I am going to have to temporarily remove the
KBPF3 board to remove this jumper. Am I missing something here? Roy
Morris W4WFB
No, you might have to take it out. I used a dental pick to break the
jumper on my K3 (serial no. 7).
--
73,
Vic, K2VCO
Fresno CA
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W6SX Hank Garretson wrote:
The K3's Key Out is rated for +200V at 5 Amps.
Inside the K3, is Key Out a relay or solid state?
It's an IRFI630 MOSFET.
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Send All Firmware to K3 in the K3 Utility and resend 2.34 (if
you don't have this checkbox, go to View and DE-select Advanced Mode).
In case the firmware didn't load completely, this will give you the best
chance of getting everything in sync.
--
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Vic, K2VCO
Fresno CA
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are especially
interested in digital modes, then maybe the 250 could be useful -- but
it isn't necessary.
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the A-B button *twice* (within a short period that I don't
exactly remember) then it will copy the filter and mode settings in
addition to the frequency.
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Fresno CA
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and an anti-static mat. All of these
items are connected to a common ground, through resistors.
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Send all firmware to K3. If you don't see
this, go to View and turn Advanced Mode OFF).
Maybe one of the tables didn't get updated properly.
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is 0.30 KHz. It seems to me there is a
problem with rounding here.
The center frequency that is displayed is rounded down to the 50 Hz.
value below it. But the actual center frequency of the filter matches
the pitch so that received signals at the chosen frequency will be peaked.
--
73,
Vic
it themselves?
Here's a really nice one:
http://www.hamware.de/hardware/tuner502/descr-at502-e.pdf
Get ready to sell your car and mortgage your home, however.
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they
are connected to the coax braid at the center, they will develop
high-ish voltages at the ends.
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go between the
standoffs and the PC board, *not* between the PC board and screws as on
the control board.
Well, which is it?
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Vic, K2VCO
Fresno CA
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You must
solder lug under one of the
thumbscrews on top of the KRX3 and used it to hold the cable in place in
case I wanted it in the future.
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Fresno CA
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You must
enclosure.
Having said that, after doing it a number of times you you get used to it.
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Dale Town wrote:
Just installed the 160 RX mod in the radio and when I tried to do a CAL PLL
on 160 meters I got a INFO 232. Anyone know what this means?
Yes, it means that you only need to do CAL PLL once, on 40 meters.
--
73
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components than ever remaining to be
installed?? Do they procreate at night when I'm not looking?
Yes.
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needed to
install it.
If you have a (built or unbuilt) KAT2 tuner, I will trade the DSP for
the KAT2 and $60 (the difference in kit prices).
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I have a built and working KDSP2.
If you have an unbuilt or built/working KAT2 and $60 (the kit price
difference), I would like to trade.
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/la3za/K2/mod.html and scroll down to the
KNB2 section you will see a note about it. I think the appropriate
modification is to increase C12, which affects the NB2 setting. It is
0.068 mf and you could try 0.1 mf.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
. Balanced
antennas are usually better than unbalanced ones, and dipoles can
benefit from the use of a balun. A random wire that comes into your
shack is probably the worst of all.
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73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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there are lots of strong signals
the optimum setting may be less aggressive.
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Fresno CA
http://www.qsl.net/k2vco
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to work ok. I couldn't
find any menu choices for the NR function though.
Whether I tap or hold the NR button, all I
get is N/A.
NR does not work if AGC is OFF.
This is because there are some circumstances in which the DSP can be
made to oscillate with NR and no AGC.
--
73,
Vic, K2VCO
Fresno CA
to configure the K3
and KRX3 with PowerSDR to do this?
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73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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of thing I'd prefer to see them work on.
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73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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another.
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Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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that there is no AGC action on noise or weakish signals.
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73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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any AGC
activation on noise or weak signals. Having the slope on 0 will give you
very minimal AGC action -- mine is presently set to 8.
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73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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You
be; try near the radio and near the EC2. You might
also do this to the cable that goes to the computer.
Clamp-on ferrite beads will probably not help unless you have one with a
hole big enough to wrap several turns of the cable through.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
reported. If I remember properly, the
problem is that the values are not being displayed correctly.
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Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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50MHz.
1.9MHz 58.1dB
3.7MHz 51.9dB
5.1MHz 49.2dB
7.0MHz 47.1dB
10MHz 44.7dB
14MHz 42.5dB
18MHz 40.8dB
21MHz 39.2dB
24MHz 37.1dB
28MHz 35.7dB
So on 60m for 100W from ANT 1 there will be 1mW from ANT 2.
73
Stewart G3RXQ
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
is tolerable).
That's certainly part of the problem. But just adding a ground wire
might create a ground loop. I guess the best way to do it would be to
insulate the SO239's from the chassis, and use hoods on them with coax!
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
to show
something other than the frequency. It does not have anything to do with
the filters not being matched; in fact, it occurs whether or not the sub
is turned on (as long as the subrx is installed).
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
.
It didn't have to be something you did during the mod. An unsoldered
connection can work for a long time!
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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manner, and did not respond to entreaties from
me or my ISP (who tried to be helpful). Ultimately the guy in Australia
got *his* ISP to stop subscribing to the blacklist and we could
communicate again!
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
when I saw Lyle's message was to do the same!
What's really interesting is the wavelength of 1 cpf: 2.5 x10**6 m. The
2-1/2 million meter band!
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73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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in the field with wire antennas placed in
trees by slingshot/reel devices, etc. The higher the better.
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Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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Vic K2VCO wrote:
Don Wilhelm wrote:
For those who will now want to add cycles per fortnight to their
conversion tables:
1 Hz = 1,209,600 cycles per fortnight.
I just thought you would want to know - I had a moment of leisure this
morning and did the calculation on paper :-)
Funny
.
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73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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