I ordered one of these after reading your report. I built it with the
stock filters, though I ordered the extra parts.
I hooked it up to my K3, LP-PAN, and Quisk software. Here are some
screenshots of NDB's, plus a picture of the case I put it in.
http://wa5znu.org/2009/06/lfconv/
Leigh/WA5ZNU
I am one of those 600m stations, WD2XSH/16. Currently building my K2 and
after that, a new 7mc IF transverter to get the K2 down on 600 meters. I
currently run a 3mc IF transverter and my TS-930. CW coverage for my station
is pretty much the whole lower 48 states into Canada. I have been on the
I'll copy this to the reflector...I don't have that answer Phil. Just
got into the Elecraft rigs at the Orlando Hamcation when I ordered my
K2. I am sure someone on the reflector will have an answer. You should
hear Pat XSH/6 real well down there on 600m as he is 4 blocks from the
Gulf Coast
To enter a 600m frequency on the K3, say 506 KHz, use this sequence:
[FREQ ENT] 0506 [ENTER]
where [ENTER] is the AFX button.
If you are going to listen on 600m it might be helpful to manually
tune the ATU for optimum reception: First select KAT3= LCSET in the
Config menu; then exit the config
Jack,
Although I do not have any details to hand there is some Amateur CW activity
in Europe within a few kHz of 500 kHz, and I believe that crossband to HF
contacts are made also.
73,
Geoff
GM4ESD
Jack Smith wrote:
Those interested in listening to signals below 500 KHz with their K2 or
Geoff:
There are a dozen or so experimental stations in the 500 KHz range
operated by a group of hams. http://www.500kc.com/ has more detail. It
seems that not too many are actually radiating as of this time however.
There are also quite a few lowfer Part 15 (unlicensed, but permitted)
elecraft@mailman.qth.net
Subject: Re: [Elecraft] VLF/LF Converters
Jack,
Although I do not have any details to hand there is some Amateur CW activity
in Europe within a few kHz of 500 kHz, and I believe that crossband to HF
contacts are made also.
73,
Geoff
GM4ESD
Jack Smith wrote
Regarding the VLF converters, one question I have for the SW folks at
Elecraft is whether they could add a transverter band to support these
unique receive converter IF frequencies. For example, I have a VLF converter
that I've used for years that was designed for a 4 MHz IF.
I realize that I
Wow, Mike!
Have you told them? They'd like to know and you'll get a nice 'QSL' from the
Grand Dame of KPH, Denise Stoops (the first female operator there). She
sends QSLs out on original RCA radiogram forms as long as the supply left
over from full time station ops lasts in response to an SASE.
PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ron D'Eau Claire
Sent: Thursday, August 28, 2008 3:52 PM
To: elecraft@mailman.qth.net
Subject: RE: [Elecraft] VLF/LF Converters
Wow, Mike!
Have you told them? They'd like to know and you'll get a nice 'QSL' from the
Grand Dame of KPH, Denise Stoops
Scott,
Right now, the K3 XVx RF can be set to most any frequency (MHz
increment) from 0 to 999 - but unfortunately the IF frequency is
currently limited to 7, 14, 21, 28, and 50 MHz.
If we could convince Wayne and Eric to support the 10 MHz band as an IF,
that would work for the 10 MHz IF
Jack Smith wrote:
Those
interested in listening to signals below 500 KHz with their K2 or K3 may
find my new review of Jackson Harbor Press's inexpensive VLF/LF up
converter of interest. It's at
http://www.cliftonlaboratories.com/jackson_harbor_press_vlf_converter.htm
I've been using it
be supplied by my local H/P
frequency standard.
Scott
N7NB
-Original Message-
From: Don Wilhelm [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 28, 2008 1:46 PM
To: Scott Prather
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] VLF/LF Converters
Scott,
Right now, the K3 XVx RF can be set
Actually 4 MHz is probably the most common I.F. for LF/MF converters. Many
Ham band rigs receive in the 4.0 to 4.5 MHz range and it uses a
commonly-available and cheap 4.0 MHz crystal for the L.O. The other designs
I've seen mostly use that range.
I bread boarded a diode ring mixer converter for
Or better pre-selection, such as a high-Q tuned antenna. I don't mean a
typical active antenna either. Most of them are a broadband amplifier hooked
to a whip. Signals way off frequency are amplified right along with the
desired ones and no amount of preselection after the antenna is going to
help
Mike wrote:
...listening on the Marine
bands now is comparable to walking in a graveyard...
73 - Mike, zl1mh.listening on the Marine
Complete with the sadness of knowing that many old friends are lying there.
Part of growing older is, indeed, learning to say Goodbye to
Nice write-up Jack!
One of the things CW buffs can do with such a converter is catch the Marine
CW stations that are still active. Station KPH on the California Coast is
very active, and the last I saw there are several others around North
America warming the 600 meter (400-500 kHz) airwaves
Ron
17.2 KHz is well within the working range of the Jackson Harbor Press
kit. The main issues are a good receiving antenna and local noise.
I can hear German and French LF stations (200 b/s encrypted GMSK) in the
20 KHz range a few dB above the noise most of the time with my
experimental
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