[UK-CONTEST] Antenna for SSB field day

[Chris G3SJJ]

  It's the age thing Robin! I remember now that you have mentioned it to me before! I was thinking of GW8GT. I seem to remember someone complained 
because the word "beam" was used! Chris G3SJJ





On 12/08/2010 23:41, Robin Thompson wrote:
>> 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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