AW: [SignalOne] Some Signal/One History

[Graf Ulrich Ulm]

Hi Charlie,

thanks for this information - interesting. I'm somewhat familiar with =
the
Milspec 1030 and also with the CX-11/A. The first and significant =
drawback
of the 1030 I found while performing several measurements is certainly =
LO
sideband noise. You are not able to measure correct filter shape factor =
due
to this high noise level. That means that - in practical operation - =
real
filter performance cannot be used due to reciprocal mixing. That's so =
far
the only deficiency I could detect in normal use. Did anybody ever try =
do
improve this? Do you eventually have further informations about this =
subject
from these former S/1 engineers?

Any hint very much appreciated.

73 Uli, DK4SX

-----Urspr=FCngliche Nachricht-----
Von: Charles Hugg [mailto:chashugg@earthlink.net]
Gesendet am: Donnerstag, 24. Januar 2002 22:44
An: Signal/One
Betreff: [SignalOne] Some Signal/One History

Here is an e-mail exchange that I had today with Harold Johnson,W4ZCB, =
a
Signal/One Engineer. Thought that you all might be interested in =
reading it.
He had responded to a for sale posting I had for a early Signal/One CX7
"Preliminary" Manual:

Harold:
 Both manuals have sold. Someone bought them both and sent me an e-mail
 direct. I just now looked at my posting on the Newsgroup and saw your
 reply.  I am sorry I didn't check earlier. I would have been glad to =
take
 you up on your offer, considering that you wrote the manual.
 I have recently gotten the Signal/One bug. First I got a CX11A and =
liked
so much that I started looking for other Signal/Ones. I found several =
for
sale and bought them. Two of them have been gone through by Paul Kollar
and  work great.
I am not real familiar with the Signal/One history. When did you work
there?
Thanks,
Charlie

No problem, thanks for the thought.

I was one of the 7 engineers that started the design, and one of the =
dozen
of the "Golden Triangle DX club" that sat down and made the specs in =
the
first place. Yes, the radio is a spoiler. I've had a dozen CX-7's in a =
super
contest station in Brooksville, three CX-11A's (I still use one of =
them) and
a Mil-Spec 1030. I still don't think there's anything that can touch =
it, if
the FT1000D just had quiet LO's, I'd buy one of those, but then if it =
did,
it would probably drift too. I have incorporated the Huff n Puff =
stabilizer
on my B VFO, and it stops the drift, but it also prevents the use of =
RIT and
stuff so never put it on the A VFO.

LOTS of water under the bridge since 1969.

Regards

W4ZCB


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