Posted by
Edward R Cole on
Jul 10, 2012; 8:13am
URL: http://elecraft.85.s1.nabble.com/KX3-Receive-Performance-Below-1500-kHz-tp7558831p7558925.html
Jim,
Actually WRC-12 authorized ham radio use world-wide (with a few
countries excluding themselves) starting on 1Jan2013. True that the
FCC has not yet put into affect rules to allow it in the USA. I
think it will happen in 2013!
Its risky business to build radios for QRP but Elecraft did. The KX3
is a risk until several hundred orders came in!
IBM did not take a risk so in 1977 a couple teenagers in their garage
built the Apple and now the only things we read about are i-phones,
i-pods, i-pads...and where is i-bm?
Detroit did not take a risk so in the 1970 gasoline crises several
Asian auto makers captured the small car field throwing GM into a
head-spin downward for a decade trying to catch up.
Typically, if you wait for a market to mature you are left in the
dust of others. You can be sure there are several innovators looking
at the potential of the new 630m ham band. Don't worry about
discouraging them!
I think the KX3 still has promise of being a good 630m radio (with a
little help from its friends). 630m will likely be slow to start
(just like the 60m band), but in time there will be a decent
population there. Right now it is still an experimental band.
Antennas are small for the wavelength but even with 4w ERP my signal
was copied 2893mi distant. Antenna is about the same size as one for
160m (43x122 foot inverted-L). Ground-wave propagation to 300-km
appears to be rock-solid (all the time). My signals were received at
91mi at 35-dB over noise for months with barely a couple dB variation
in strength. Terrific emcomm potential. Why the ships used it for
their emergency band when CW was still in use.
73, Ed
-------------------------------
Date: Sun, 08 Jul 2012 15:48:18 -0700
From: Jim Lowman <
[hidden email]>
Subject: Re: [Elecraft] K3/KX3 MF/LF Transverter
To:
[hidden email]
Message-ID: <
[hidden email]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Not to rain on anyone's parade, Bill, but a couple of things
come to mind:
-- I would think it a risky business to develop a transceiver
for a band that is not yet authorized for amateur use
-- If most of us have trouble getting an antenna going for
160m - wow - 630m?
Just thinking out loud; not wanting to discourage anyone.
73 de Jim - AD6CW
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-?
DUBUS Magazine USA Rep
[hidden email]
"Kits made by KL7UW"
http://www.kl7uw.com/kits.htm======================================
______________________________________________________________
Elecraft mailing list
Home:
http://mailman.qth.net/mailman/listinfo/elecraftHelp:
http://mailman.qth.net/mmfaq.htmPost: mailto:
[hidden email]
This list hosted by:
http://www.qsl.netPlease help support this email list:
http://www.qsl.net/donate.html