[Elecraft] Upgrading K3 s/n 11xx to operate on the 472KHz

2017-10-01 Thread John Harper 
These seem to be popular from what I've been reading lately:

http://www.monitorsensors.com/ham-radio/630m-transverter

-- 

John AE5X
https://ae5x.blogspot.com
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Re: [Elecraft] Upgrading K3 s/n 11xx to operate on the 472KHz

2017-10-01 Thread Mark E. Musick 
Jack,
This should get you started. This is from the KSYN3A FAQ dated February 13,
2015.

8. What is required to use the 600-meter band?a. This band is available
in some countries, often on an experimental basis. Specific restrictions may
apply. A K3 fitted with a KSYN3A, as well as a KXV3 and KBPF3A, can receive
signals on this band, and can put out about 1 milliwatt of transmit power.
An external amplifier will be needed, connected to the XVTR OUT jack. At
present we don't have information on such amplifiers. You can also get on
this band using an upconversion transverter whose output is on a low HF band
(also not presently supplied by Elecraft). For a general introduction to the
600-meter band, see:
http://en.wikipedia.org/wiki/600-meter_amateur_radio_band   
   
9. Can a transverter I.F. of "0" be defined as an alternative to setting
CONFIG:KXV3 to TEST?a. Not at this time, though we hope to add this
capability. Those who frequently alternate between TEST and NOR modes can
assign the KXV3 menu entry to a programmable 
function switch, or write a switch macro to change this menu setting as well
as set up the VFO, preamp, etc., for this band.

*** Here is information provided by Wayne in an e-mail to the reflector on
9/16/2017:

Here's some info to get you started on 630 meters with the K3S or K3. For
receive purposes, either transceiver is fully self-contained. For transmit,
you'll need an external amp of some kind.

RECEIVE

The K3S, or a modified K3, will receive on this band via the XVTR IN jack
(or RX ANT IN). You'll need:

  - A KXV3 transverter interface module (standard with the K3S but optional
for the K3)

  - A KBPF3A filter module, or a KBPF3 with a small mod (see KBPF3MDKT). The
KBPF3A mod kit also comes with a capacitor to be installed on the K3's RF
board to suppress LF noise.

RX performance is quite good on 630 meters. 

Note: The XVTR IN and RX ANT IN jacks work on 630 meters (472 kHz) because
both are post-TR switch. The TR switch has high-pass filtering that rolls
off starting around 1 MHz, so you can't use ANT 1 or ANT 2.

TRANSMIT

You can get a transmit signal out on 630 meters using the XVTR OUT jack
(same requirements as above). Our initial tests shows about 0.5 milliwatts.
In this case you'd use XVTR IN for receive, not RX ANT IN. 

You'll then need an external amplifier. It could be keyed using the rig's
KEY OUT jack. This signal could also be used to control a T/R switch if you
needed to use the same antenna for both transmit and receive. If you use two
different antennas, you'll still have to cut the RX antenna off during TX,
most likely.

Firmware configuration:

To use XVTR IN and OUT on this band, set up the radio for 160 meters, then
set the CONFIG:KXV3 menu entry to TEST. This is necessary because 160 meter
isn't available as a transverter IF selection (yet).

73,
Wayne
N6KR


Mark, WB9CIF 

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jack Colson
Sent: Sunday, October 1, 2017 10:59 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Upgrading K3 s/n 11xx to operate on the 472KHz

What needs to be upgraded or added to a stock K3 s/n 11xx to
receive/transmit on 472KHz?
Thank you,
73,
Jack, W3TMZ
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[Elecraft] Elecraft CW Net Report

2017-10-01 Thread kev...@coho.net 

Good Evening,

    40 meters was not as strong as 20 meters today.  But on 20 meters 
the band was open to all over the US and up into Canada. Today was the 
first time I have worked the Yukon Territory. Whitehorse was easy copy 
from Oregon.



On 14050 kHz at 2200z:

NO8V - John - MI

W6HV - Troy - CA

W0CZ - Ken - ND

K6XK - Roy - IA

K4JPN - Steve - GA

VY1JO - Scott - YT


On 7045 kHz at z:

K6PJV - Dale - CA


Lots of noise on both bands; storm noise and space noise combined.  QSB 
was a fast flutter on top of a slow wave but copy was good all around.


Hope to hear you all again next week.

   73,

   Kevin.  KD5ONS


-

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[Elecraft] Upgrading K3 s/n 11xx to operate on the 472KHz

2017-10-01 Thread Jack Colson 
What needs to be upgraded or added to a stock K3 s/n 11xx to receive/transmit 
on 472KHz?
Thank you,
73,
Jack, W3TMZ
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[Elecraft] OT: LED Light Bulbs

2017-10-01 Thread Lynn W. Taylor, WB6UUT 

Just saw an ad for Genie LED Bulbs.

Apparently some LED light bulbs make enough noise that they desense the 
garage door receiver.


These bulbs are specifically low-RFI.

I have no more information.  For all I know, they fix the garage door 
RFI by moving the noise to 14.300 MHz.


73 -- Lynn
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Re: [Elecraft] SDRPlay as panadapter

2017-10-01 Thread Edward R Cole 
Like Wes-N7WS writes, I have a SDR-IQ and use Spectravue.  I have the 
SDR-IQ in parallel with my K3 looking at 28-MHz IF output from my 
transverters 144 thru 1296.  I mainly use the "Combo" display for 
watching 100-KHz of activity on 1296-eme or use the "Continuum" 
display for measuring sun noise vs cold sky to check dish 
performance.  But understand Ian's need to watch 250-KHz for crowded 
EU VHF contests.


I'd like to make an endorsement (OT) for Ian's Triode Board which he 
sells for high-power triode amplifiers.  It made building my 2m-8877 
possible as all bias, current and HV monitoring and overcurrent 
protection are handled, including warm-up delay timing.  If you are 
building a high power triode amp this IS the needed component.  My 
Triode board has faithfully run 1500w key-down JT65 for several 
years.  Thanks Ian.


Of course if you are running sspa it does not apply.

I hope to have a 1200w 2m LDMOS 2m linear (W6PQL-kit) running by 
spring so my 8877 linear and HVPS will be available for sale at that 
time (probably OT for this list).  Due to shipping size/cost I may 
part out the HVPS and 200-lb. HV transformer FS here in Alaska.


73, Ed - KL7UW

From: "Ian White" 
To: "'Dave Fugleberg'" ,

Subject: Re: [Elecraft] SDRPlay as panadapter
Message-ID: <00cc01d33a06$63e5dda0$2bb198e0$@co.uk>
Content-Type: text/plain;   charset="us-ascii"

Hi Dave

I connect the SDRplay through a 3dB splitter at the 28MHz RX output of
the transverter. A hybrid splitter is used to maximize the isolation
between the SDR and the K3's receiver.

This method is used in preference to the internal 8.2MHz IF output of
the K3 because the transverter output port can deliver a higher
signal/noise ratio to the input of the SDR, which improves its ability
to display extremely weak VHF/UHF signals.

73 from Ian GM3SEK


73, Ed - KL7UW
  http://www.kl7uw.com
Dubus-NA Business mail:
  dubus...@gmail.com 


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[Elecraft] TEST MSG - ALL DISREGARD

2017-10-01 Thread Bob McGraw K4TAX 

TEST MSG - NEW SERVER INSTALLED

73

BOB K4TAX


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Re: [Elecraft] SDRPlay as panadapter

2017-10-01 Thread Michael Walker 
I am surprised about the 6700 comment.

There is a Software fix for SmartSDR that addresses the pre-amps on the
6700.  I wonder if he had it applied.

Mike va3mw


On Sun, Oct 1, 2017 at 7:27 AM, jeff griffin  wrote:

> I run 2 HP 2311x's here on 12v...
>
> 73 Jeff kb2m
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net [mailto:elecraft-bounces@
> mailman.qth.net] On Behalf Of Clay Autery
> Sent: Saturday, September 30, 2017 9:10 PM
> To: j...@audiosystemsgroup.com; Reflector Elecraft
> Subject: Re: [Elecraft] SDRPlay as panadapter
>
> I've pretty much become resigned to the need to provide a dedicated DC
> voltage to the monitors, etc...  I'm hacking on a monitor like the two I'm
> using to figure out where to bypass the internal power supply and tap in to
> provide clean DC.
> At this point, I'm simply trying to minimize the number of voltages
> required rather than get everything to the near 12-14 vdc...
>
>
> Sent from my Verizon, Samsung Galaxy smartphone
>  Original message From: Jim Brown <
> j...@audiosystemsgroup.com> Date: 9/30/17  19:25  (GMT-06:00) To:
> Reflector Elecraft  Subject: Re: [Elecraft]
> SDRPlay as panadapter On 9/30/2017 8:51 AM, Barry Baines wrote:
> > What size SVGA monitors do you use? I presume there is a tradeoff
> between real estate being used by the monitors versus preferred viewing
> size for seeing what the P3 can provide.
> Exactly right. There's also the issue of finding monitors that will run on
> 12-14VDC, so that they can be powered from clean power supplies. :)
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Re: [Elecraft] SDRPlay as panadapter

2017-10-01 Thread jeff griffin 
I run 2 HP 2311x's here on 12v...

73 Jeff kb2m

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Clay Autery
Sent: Saturday, September 30, 2017 9:10 PM
To: j...@audiosystemsgroup.com; Reflector Elecraft
Subject: Re: [Elecraft] SDRPlay as panadapter

I've pretty much become resigned to the need to provide a dedicated DC voltage 
to the monitors, etc...  I'm hacking on a monitor like the two I'm using to 
figure out where to bypass the internal power supply and tap in to provide 
clean DC.
At this point, I'm simply trying to minimize the number of voltages required 
rather than get everything to the near 12-14 vdc...


Sent from my Verizon, Samsung Galaxy smartphone
 Original message From: Jim Brown  
Date: 9/30/17  19:25  (GMT-06:00) To: Reflector Elecraft 
 Subject: Re: [Elecraft] SDRPlay as panadapter On 
9/30/2017 8:51 AM, Barry Baines wrote:
> What size SVGA monitors do you use? I presume there is a tradeoff between 
> real estate being used by the monitors versus preferred viewing size for 
> seeing what the P3 can provide.
Exactly right. There's also the issue of finding monitors that will run on 
12-14VDC, so that they can be powered from clean power supplies. :) 
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[Elecraft] FREE 2.4m Dish

2017-10-01 Thread Edward R Cole 

My apologies - sent to the wrong list - disregard, please.

73, Ed - KL7UW
  http://www.kl7uw.com
Dubus-NA Business mail:
  dubus...@gmail.com 


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[Elecraft] FREE 2.4m Dish

2017-10-01 Thread Edward R Cole 
Discussing plans for next year with my wife we came to the decision 
that the 2.4m ku-band dish probably needs to go by next 
May/June.  I've stored it for 20-years and having put up the 4.9m 
dish this one probably will never get used so it is FREE (you pick it 
up in Nikiski, Alaska).  Details are on:

http://www.kl7uw.com/fs.htm scroll to bottom of the page.

It weighs about 300-400 lbs.  This dish was a custom-made (1990's) 
shipboard VSAT terminal on 14-GHz and has digital encoders for 
az-el-pol with selsyn drive motors for all three axis.  I have the 
dish drive electronics boxes but not the sw that controlled it via 
internal computer.  I has WR-90 feed with rotating joints.  Original 
cost $98K.  I got it for $100 from my former employer.


If no takers (only reasonable for an Alaskan ham) the dish and frame 
with be hauled to the recycle center for scrap.  Dish can be hauled 
in back of a pickup but dish would extend 8-foot wide.  Probably need 
a loader or tow truck to lift it.


73, Ed - KL7UW
  http://www.kl7uw.com
Dubus-NA Business mail:
  dubus...@gmail.com 


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