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
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, firstname.lastname@example.org wrote:
>> Message: 1
>> Date: Fri, 30 Jul 2010 22:32:30 +0000 (GMT)
>> From: email@example.com
>> Subject: [CQ-Contest] CQ and S&P on the same band
>> To: firstname.lastname@example.org
>> 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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