[CQ-Contest] CQ and S&P on the same band

Joe nss at mwt.net
Sat Jul 31 16:28:51 PDT 2010

Think "Field Day"

In the 70's Long before the "New" "Solid State" transceivers came to be. 
Running 3 stations on one bade was done all the time!

We had Drake TR-4  40 CW (Novice Band)
And a 40 CW station
and a 40 SSB station


The Original Rolling Ball Clock
Idle Tyme

On 7/31/2010 3:02 PM, Hank Greeb wrote:
> Big deal?  We did the same thing between the Buckeye Net, (3580 KHz),
> the Eighth Region Net (3530 KHz), and the Eastern Area Net (3670 KHz)
> during a Simulated Emergency Net sometime in the 60's or the early
> 70's.  We had two stations, one on either the Buckeye Net or the Eastern
> Area Net (They weren't on at the same time) and the other on the Eighth
> Region Net.  The receivers were 75A4's - don't recall what the
> transmitters were, but we could receive messages on one net, physically
> pass the written traffic on paper to the other station, and list it
> almost immediately thereafter.  The Net Control sometimes got flustered,
> because he/she didn't understand why we didn't list all the traffic at
> the beginning of a session.  However, with overlapping cycles of the
> National Traffic System, it seemed logical to have the Eighth Region Net
> is continuous operation, and able to pass traffic to/from the
> lower/higher eschelon traffic nets on a real time basis.
> I don't know how a 75A4 stacks up to a TR-7, but there was absolutely no
> interference between two rigs which were closer than 50 KHz apart on 80
> metres.  Don't recall if we experimented with how close in frequency we
> could get without interference.  The 75A4 was considered near "gold
> standard" for the day.
> The antennae were dipoles at about 50', and physically separated by
> about 600 feet.  One was fed with open wire line, the other with RG-213.
> 73 de n8xx Hg
> Past 8th Region Net Manager
> On 7/31/2010 3:00 PM, cq-contest-request at contesting.com wrote:
>> Message: 1
>> Date: Fri, 30 Jul 2010 22:32:30 +0000 (GMT)
>> From: kr2q at optimum.net
>> Subject: [CQ-Contest] CQ and S&P on the same band
>> To: cq-contest at contesting.com
>> Well, all you have to do is look at the CQWW on-line (public) logs and you will note lots of guys have been doing just this, especially non-NA.  It's no big deal.
>> As for history, as others have stated, this was done ~35-40 years ago.  At N2AA/K2GL I did this successfully on 10m with my own simple design.  We used a pair of TR7s (when that was considered the "hot" radio).  One rig went to our 10 over 10 stack "up on the hill" while the other radio could use a pair of phased 1/4 wave verticals, physically positioned for minimal pickup from the yagi's when the yagis were pointed at Europe, which is where they usually were, except for the JA openings (remember those on 10m?).
>> Without any "extra" filters or slight of hand, we could listen without any issue at all within 5kc of our own xmit QRG.  And the verticals heard real well (just a simple 4 radial system for each one).
>> We also had listener yagi "in the woods" on the other bands and I don't remember on what other bands.  Not sure how well they worked, but I do know that the phased verticals were killers for listening while transmitting.
>> de Doug KR2Q
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