I would also express my huge interest in a mini-qrp rig (KX1/K1/etc)
that is multi-band with a built-in antenna tuner for digital modes
(PSK-31/MFSK/etc).
My KX1 is a superb radio. I absolutely love it and rate it a strong 9
out of 10. To make 10, and be used much more for me personally, it
would need (1) the ability to do digital modes, (2) more frequency
memories, and (3) computer interface for programming and rig control
(which sort of goes along with digital modes, and sort of doesn't!)
Okay, so my wish list might not completely be consistent with a "trail
radio" and the design goals of the KX1. No problem, I'm flexible. Add
my requested features to the K1 instead and I will reply with my
MasterCard number instantly! Or maybe a wonderful new Elecraft product
focused on QRP digital modes?
72/73's
Doug N7BNT
KX1 # 731
wayne burdick wrote:
Hi Eric,
Great idea, but the KX1's final amplifier operates class C. To make
the KX1 transmit on SSB would require class AB PA bias and the
addition of a balanced modulator. This is not readily accomplished
with either internal mods or an external adapter.
However, it may be possible to operate the KX1 in any low-data-rate,
dual-tone FSK mode. This is compatible with a class-C final amp, and
should require only a firmware change. The KX1's key jack would serve
as the data input/output port for connection to a computer.
Unfortunately FSK (e.g. traditional RTTY) is not quite as popular as
PSK31 for QRP use, even though good reliability is possible with some
variants.
Would this be of interest?
73,
Wayne
On Oct 2, 2004, at 12:32 PM, Eric Ward wrote:
When I was tuning around today on my KX1, I heard the usual strong
warble around 14.070 and I got the brilliant idea to: plug a patch
cord from the KX1 headphone output to my soundcard input, launch
PSK31 Deluxe, crack open the AF gain, and boom, 5 QSOs popped up
right away.
I know the thinking on omitting an SSB option from the KX1 is because
voice doesn't typically work reliably below about 10W, and an SSB
board wouldn't fit in the KX1 case. But like CW, PSK31 can work like
a champ even at 100s of mW.
So how about an Elecraft-designed-and-produced *outboard* SSB adapter
for the KX1, designed specifically for PSK31? On biz trips, I
usually have my KX1 and laptop--it would be great to take along one
more little black box and be able to work PSK31, while making use of
the KX1's KXAT1 capability to match a hotel room random wire on
multiple bands. (The Small Wonder Labs PSK series looks exceedingly
cool, but is rock-bound to a single band and requires an
external tuner for non-resonant antennas.)
Good idea? Dumb idea?
73,
Eric
N0HHS KX1 #670
---
http://www.elecraft.com
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