[UK-CONTEST] Antenna for SSB field day

[Robin Thompson]

> Subject: Re: [UK-CONTEST] Antenna for SSB field day
>> Chris SJJ wrote...  
.......... I recall some years ago (again!) a group
> using a longish doublet, maybe around 250ft per leg and bringing the legs
> round to from a Vee Beam during daylight hours on the higher bands. The
rules
> need to be flexible enough to encourage and allow that choice.

... "Some years ago ..... ???  G6YB has been using a similar type of antenna
for many years now !
Come on Chris ... keep up   ;-)

73
Robin
G3TKF



> On 12/08/2010 20:55, Andy Summers wrote:
> >    Well, this is really spooky! I sent an e-mail to the contest
committee
> > about this very subject a couple of weeks back.
> >
> > I have a letter from you, Chris, when you were Chairman (circa 20 years
> > ago) sitting in a filing cabinet in the shed, telling me that commoned
> > dipoles on a single feedline were more than one antenna and broke the
> > SSBFD rules.
> >
> > I suggested in my e-mail that there might be a FAQ section on the
> > website that answers questions like these. This might help avoid such
> > inconsistencies.
> >
> > In fact, can someone clarify this before September please? It might
> > affect whether we enter this year. Not from a sour grapes point of view
> > but from a can't use the usual hardware and lack of personnel this year
> > point of view.
> >
> > 73,
> > Andy, G4KNO.
> >
> > On 10/08/10 18:30, Chris G3SJJ wrote:
> >>     I recall some discussion about this some years ago David but the
facts are a
> bit hazy (No wine, honest!) I have a feeling that at some stage the
> >> rules said one element per band. Just wondering if I am confusing this
with
> 21/28MHz contest. The 1996 Rules Supplement shows the rule as now - "One
> >> antenna only which must be a single element." I would have thought a
stack of
> dipoles are one element per band but maybe the interpretation has changed.
> >>
> >> Apart from the rule word, I wouldn't have thought a stack wouldn't be
so
> efficient though as effective height could be lost, it also would be very
> >> unwieldy to erect and support. Additionally, since a 20m EDZ has gain
over a
> dipole on that band, and on 40m with the extensions, I would have thought
> >> that a better option.
> >>
> >> Hope that hleps the discussion.
> >>
> >> 73 Chris G3SJJ
> >>
> >>
> >>
> >>
> >> On 10/08/2010 16:03, David Honey wrote:
> >>> At 14:54 10/08/2010, Alex GM3ZBE wrote:
> >>>> Chris, et al
> >>>> You reminded me of a question I've meant to ask for some time.  I.e.
are
> >>>> you allowed to change aerials during the NFD contest?  Could I have
more
> >>>> than one dipole and swop them as necessary during the contest.  Each
> >>>> antenna being a single element?  I'm talking about the restricted
> >>>> section of course.
> >>>> Alex 'ZBE
> >>> When Reading and District asked the contest committee about this some
> >>> years back, we were advised that a fan dipole consisting of several
> >>> dipoles all connected to a common feedpoint did meet the criteria and
> >>> could be used in the restricted or lower power sections of field day
> >>> contests. One of our stations has used such an arrangement for
> >>> several years and an official inspection during the contest did not
> >>> raise this as an issue. If the rules, or their interpretation has
> >>> changed, I'd like to know for sure from someone on the contest
> >>> committee as we might consider a fan dipole in the future.
> >>>
> >>> We have often used a single dipole with banana plugs for band changes
> >>> for CW NFD. Of course, you have to lower it to swap the plugs in and
> >>> out, but at any one time, it's the same feedpoint and a single
> >>> element dipole. There has never been a question about the legaility
> >>> of doing that. On SSB FD where the ability to band change quickly to
> >>> S&P on multipliers is important, we have used a doublet with an auto
> >>> ATU on top of the mast directly at the feedpoint. That worked very
> >>> well last year.
> >>>
> >>> David, M0DHO
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