Posted by
k6dgw on
Oct 23, 2011; 11:25pm
URL: http://elecraft.85.s1.nabble.com/KX3-vs-FT817-how-do-the-inside-dimensions-compare-tp6919846p6923239.html
On 10/23/2011 12:12 PM, Ron D'Eau Claire wrote:
> I had the impression that the rise of the Ham-band-only transceiver in the
> 1950's and 60's was based on simple economics.
I have the GC BPF for my K3, and it works very well. There is still
some press to be found on RTTY [usually 850 Hz shift], and sometimes I
find the BBC. They have a lot of exposure here in the US via NPR and
others, but it's fun to "hear it from the Mother Country occasionally."
Sometimes I start copying the "numbers stations" just wondering whose
spies I'm hearing :-))
I think the rise of the transceiver [vs separate tx and rx which had
ruled ham shacks since the beginning of time] was the result of the
KWM-2. Tuning SSB was hard on the receivers of that day, zero-beating
your TX was even harder. When a box appeared that absolutely guaranteed
you were transmitting on the same frequency as you were listening, hams
embraced the concept [and SSB] almost fully [there were some AM
holdouts, still are I guess].
Art's masterful scheme of a RX/TX covering 200 KHz around 3 MHz preceded
by a crystal controlled converter for any 200 KHz range in the HF
spectrum seems to have gotten everyone used to the idea of
ham-band-only, although the KWM-2A with it's switchable crystal decks
was by far and away the HF workhorse for the US Military in the 60's on
other than ham band frequencies. The S-line was just a KWM-2 split into
a RX and TX.
A data point I'd sure like to see is how my K3 stacks up against the S-3
line I wish I had held onto. I had the 2.1 KHz and 500 Hz mech filters,
I know there was a 250 Hz available, but I wonder how it would do with
the blocking tests we now spend so much time scrutinizing. Not that I'm
about to give up my K3 :-)
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 2012 Cal QSO Party 6-7 Oct 2012
- www.cqp.org
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