[SignalOne] CX7 serial numbers

Mon Dec 26 15:29:12 EST 2016

Hi Peter,
Surprised to see  you on the Signal One list. Missed you on 23cM EME on the
2nd leg of the contest.
Hope to work you again soon,

Dale W4OP

-----Original Message-----
From: SignalOne [mailto:signalone-bounces at mailman.qth.net] On Behalf Of
Peter Sundberg
Sent: Monday, December 26, 2016 3:21 PM
To: Fred; signalone at mailman.qth.net
Subject: Re: [SignalOne] CX7 serial numbers

This list is for discussions regarding collecting, repair, use and sale of
Signal/One radios and accessories.

Documentation on Signal/One radios can be found at http://www.hamanuals.com
and several other sites on the Web.

.
Thanks for the info guys, all very interesting and much appreciated.

My CX7 labels says serial number 00119 and the label says it is manufactured
in FLA. It still has the NIXIE-tube display, all digits working fine.

I have only inspected it briefly inside when blowing the dust out with high
pressure air. I see what appears to be modifications to some of the circuits
but I need to back track them to see what they really are. Doing so I will
take pictures and put them on my webpage, I will also send some info and
pictures to you Fred for the registry page.

I have been checking the webpages you are pointing to so I am familiar with
all the material available and will digest all of it in due time.

At the moment I have a fair idea who brought this set with him to Sweden
from the US in the 70's, I just need to do some more checking to verify
this. If this turns out to be true, I actually operated this set briefly in
a contest in 1977. I did not wash my hands for a week after that highlight
in my early ham career... :-)

73
Peter SM2CEW

At 17:32 2016-12-26, Fred wrote:
>Hi Peter and Hi also to you Ed.
>Happy New Year!
>I sent the following in response to another request for SN info recently.
>It echos what Ed said.  I am going to diligently look for my notes on 
>the SNs and dates of production.  They date back to the early 2000s but 
>I know they are here somewhere. HI HI  It may be  2 or 3 weeks but I 
>will add this info to the web site and alert everyone here when it is 
>done.
>
>As for the serial numbers here is what we know.  And I am doing this 
>from memory as I thought I had this info on the web site but I do not.  
>I have the notes around here somewhere but it could take quite a while 
>to find them.  I will do it after the first as this information should 
>be posted.  So I hope my memory serves me well and the following info 
>is correct.
>The FL rigs had 5 digit SNs starting at 00100 or 00101 (not certain).  
>The CA rigs had 9 and 10 digit SNs and to this day we can't figure out 
>what the hell they were doing.  There is no logical pattern to the 
>numbers.
>The CA rigs were certainly CX7As but actually there were some of the 
>later FL rigs that had most of the updates in them.  So it is difficult 
>to say that at a certain SN they actually became CX7As.  There were 
>also a very few rigs with SNs 71-xxx.  I can't remember why right now.
>Most of the radios have had many if not all of the A mods and most have 
>also had the IC power supply upgrade done.  The early power 
>supplies....well, they just sucked.  The pass transistors were 
>constantly failing.
>If you have most of the A mods, as I expect you do, and you have the 
>LED keyer/counter and you have the IC power supply mods then what you 
>have is considered a CX7B.  There were 3 or 4 CX7Bs made in NJ right 
>before the CX11 came out.  The LED board is essentially a CX11 board 
>with a different LED configuration.
>I have 2 CX7s that I consider to be B models.
>
>
>73 de
>Fred
>K5OG
><http://www.k5og.com>www.k5og.com
>www.signalone.org
>
>
>
>Peter Sundberg wrote:
>>
>>
>>This list is for discussions regarding collecting, repair, use and 
>>sale of Signal/One radios and accessories.
>>
>>Documentation on Signal/One radios can be found at 
>><http://www.hamanuals.com>http://www.hamanuals.com and several 
>>other sites on the Web.
>>
>>.
>>Hi all,
>>
>>I am new to this group. I have finally acquired a CX7 with the 
>>matching CX7S speaker and the ElectroVoice 676 microphone + service
manual.
>>
>>It took me 40+ years to afford this beauty.. :-)
>>
>>I would like to find out if the serial numbers are different 
>>between the CX7 and CX7A?
>>
>>Reading the K5OG registry I see low numbers both for the CX7 and 
>>the CX7A, so just curious if they are the same or separate series.
>>
>>73
>>Peter SM2CEW
>><http://www.sm2cew.com>www.sm2cew.com
>>
>>
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