News to me, Bob -- but the modes you operate may
make it more or (in my case) less noticeable.
It might be good if you provided more into:
* Which modes?
* Only after an extended key-down TX period or
on receive, too?
* How much drift in what period of time?
* Do you have the KTCXO3-1TCX
KV6X has noticed his temperature controlled crystal is drifting in his K3.
I notice it too. This is a new thing. I have never seen a post about K3
drift. Anyone had this problem??
Bob
K7VO
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A better example would be to use a 100 Ohm dummy load and match it with a
tuner. Then measure the heat generated by the load. It should be 100W, minus
any losses in the tuner and transmission line.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Jan 12, 2015, at 9:26 PM, Vic Rosenthal w
Here is an experiment to show what I mean.
Take a transmitter and connect it to a 50 ohm dummy load through an antenna
tuner. Put a wattmeter between the transmitter and the tuner.
Now adjust the transmitter for 100 watts output and the tuner for 1:1 SWR.
The meter reads 100W forward and zero ref
Sounds like a plan, Vic :-)
BTW -- did you manage to get that antenna repaired?
73, Phil W7OX
On 1/12/15 9:09 PM, Vic Rosenthal wrote:
So why do I need an amplifier? I can just double my power by detuning my
antenna tuner!
Vic K2VCO /4X6GP
On Jan 13, 2015, at 6:54 AM, Walter Underwood wro
So why do I need an amplifier? I can just double my power by detuning my
antenna tuner!
Vic K2VCO /4X6GP
> On Jan 13, 2015, at 6:54 AM, Walter Underwood wrote:
>
> All power ends in a load.
>
> Forward and reverse power measures standing waves, but all those waves go
> into some kind of loa
No. That is wrong. Forward and reflected are aspects of the standing wave, not
power delivered. —wunder, K6WRU
On Jan 12, 2015, at 8:53 PM, Vic Rosenthal wrote:
> What I want is just forward - reflected. Neglecting losses, this is what the
> tx is 'delivering'. In real life somewhat less gets
What I want is just forward - reflected. Neglecting losses, this is what the tx
is 'delivering'. In real life somewhat less gets to the antenna.
Vic K2VCO /4X6GP
> On Jan 13, 2015, at 3:19 AM, Fred Jensen wrote:
>
> Well ... sort of. Some of the reflected power heats up the ATU and/or PA
>
All power ends in a load.
Forward and reverse power measures standing waves, but all those waves go into
some kind of load. Nearly all of it, if you are lucky, goes to the antenna. The
rest goes to heat. Forward and reverse is just a way to measure standing waves.
It does not mean the some perc
You are implying that I can arbitrarily increase my power output by detuning my
antenna!
You are right that reflected power is re-reflected by the source, but there is
a sense in which the 'real' power output in my example is 1 kW.
Vic K2VCO /4X6GP
> On Jan 13, 2015, at 2:46 AM, Phil & Debbie
I'm talking about forward minus reflected power. If you neglect losses, that is
how much power gets to the antenna to be radiated. A wattmeter that measures
forward power will be misleading if the SWR is high. My antenna has an SWR of
about 2.5:1 on 40 m. When the transmitter delivers 100 watts
Do pay attention to the ESD precautions. An short version is in
the K3 manual on page 77 where it describes how to install
filters. You can download the manual from the Elecraft web site.
73 Bill AE6JV
On 1/13/15 at 5:19 PM, elecraft@mailman.qth.net (Bob Gibson via
Elecraft) wrote:
HI All.
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Bob,
The KAT3 should be no problem to install, just follow the instructions.
For the filter change/addition, again follow the instructions. If there
is no KRX3 option installed, it is simply a matter of removing the top
and bottom covers, but if the KRX3 is installed, it must be removed to
ga
The best part of elecraft radio is that a proper built kit is 100% the same as
an assembled version.
73
Johnny VR2XMC
寄件人︰ Michael Murphy
收件人︰ Bob Gibson
副本(CC)︰ "elecraft@mailman.qth.net"
傳送日期︰ 2015年01月13日 (週二) 9:37 AM
主題︰ Re: [Elecraft] K-3
Bob,
I just built my K3 2 weeks ago
Bob,
I just built my K3 2 weeks ago (and a P3 last Friday night). The K3 took
about 10 hours to build.
Elecraft provides very good step by step instructions. Spend some time
reading over them and then get started. Take your time and you will be
fine.
You will love the K3. I spent all day Sat
K4!
--
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net
for MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
for Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
for MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SS
Just follow the documentation for installing the antenna tuner. Filters are a
piece of cake to install -- well, as long as the sub-RX is not in the K3, I
don't have a sub receiver in mine so I can't comment too much on if it is hard
to do.
The documentation for doing the installation of vario
HI All..I just bought a used K-3, I wanted to install the antenna tuner and
2.8 SSB filter as well as the 6 KC SSB filter.. I have never looked inside the
K-3 so..is this going to be a hard job to do?Bob W5RG Almost 60 years in Ham
Radio
Well ... sort of. Some of the reflected power heats up the ATU and/or
PA depending on the match it sees [actually, some of the forward power
does too, tuners have forward losses]. "Delivered Power" is somewhat
difficult to calculate. Working into a matched, non-reactive load
[common for AM b
Hello all,
Anyone have any luck in this regard? I have recently picked up a Pigremote
which I am getting going on the network, and soon over the Internet, but
wondered if anyone used rumlog via the Internet---especially on cw. At the
moment I can not seem to get it to recognize the Pigremote .
"I would like the W2 wattmeter to be able to display "delivered" power,
that is, forward power minus reflected power. This would give a more
accurate indication of power going to an antenna when the SWR is not
1:1. For example, if the SWR on the line is about 2.5 and forward power
indicates 1.
Thanks to everyone for the information and tips.
I'll definitely use the KX3 utility when I'm at home.
An option for always displaying the decoded text rather than switching back
to VFO B frequency would be nice for practice when a computer is not
available.
Thanks,
phil K4PMI
--
View this
OK, anyone have any ideas of anything new to be shown by Elecraft at Dayton?
Perhaps the sensor for the P3?
jim ab3cv
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Vic,
What do you mean by "delivered power"? I presume you mean delivered to the
antenna (aka antenna system) but are you thinking power input to the W2 minus
all the losses. By all losses I mean all losses on transmission line due to
just plane old cable loss and higher losses due to higher S
I definitely want an LP100A, but I HAVE a W2, and while it is not as
accurate, I still would like to see the delivered power!
On 12 Jan 2015 21:12, Jim Brown wrote:
On Mon,1/12/2015 7:56 AM, Vic Rosenthal 4X6GP/K2VCO wrote:
I would like the W2 wattmeter to be able to display "delivered" power,
On Mon,1/12/2015 7:56 AM, Vic Rosenthal 4X6GP/K2VCO wrote:
I would like the W2 wattmeter to be able to display "delivered" power,
that is, forward power minus reflected power.
You want N8LP's excellent LP-100A. I had lusted after one for quite a
while, and bought W6OSP's unit after he died fo
"Other than they both fit into the same space and
for that reason cannot be both present at the same
time": Always these troublesome minor details, Don
:-)
I suspect that if a 6-band K1 (say, with external
ATU like the T1) had been doable, Wayne would have
done it!
73, Phil W7OX
On 1/12/1
Dale,
Other than they both fit into the same space and for that reason cannot
be both present at the same time - there is no problem.
The offsets are remembered for all 6 bands.
So if you replace the 4 band board with the 2 band board, all you need
to do is set the menu b1 parameter to 3.5 and
Is there any reason why, a 2 band module for the K1, couldn't be made for 80/15?
And installed with a 4 band (40-30-20-17)?
Thank you!
Have a great day,
--... ...--
Dale - WC7S in Wy
_
Bit of a weird effect found here. I am using an external 2m transverter
to 28MHz. I noticed that when switching between VFOs using the A/B
switch from (eg) 145.7875FM to 144.430 usb, the KX3 says “Hi Sig” and
disconnects the preamp. This still happens with nothing connected to the
KX3's antenna
I would like the W2 wattmeter to be able to display "delivered" power,
that is, forward power minus reflected power.
This would give a more accurate indication of power going to an antenna
when the SWR is not 1:1.
For example, if the SWR on the line is about 2.5 and forward power
indicates 1
That's a first for me. Been a ham for 53 years, buying, selling and trading
gear. First time I've ever seen someone request a Starbuck's Gift Card to
cover payment for anything! ;o)
Very creative, Phil.
Terry, W0FM
-Original Message-
From: Phil Hystad [mailto:phys...@mac.com]
Sent
Hi Dave,
Even though it is in the manual I'm glad you posted the video. I had
forgotten the existence of Norm 1 and Norm 2 and the refresher was
beneficial to me. I normalize lots of times and 400Hz is never what I want.
I've now created Norm 1 to suit my preferred CW bandwidth.
Sometimes a "feat
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