[TowerTalk] Adding reflector to 40-m. vertical - Update

[Mirko S57AD]

Parasitic vertical array needs MORE radials than phased one! With 
quarterwave space between both verticals it would be better to phase them!

73,
Mirko, S57AD

S, Gene Fuller piše:
> Hi Dick -
> If it's not effecting the SWR then it's not coupling into the DE and won't
> do anytrhing for you.Don't forget that the parasitic relector will need
> radials, just like the driven element. I would try to get a minimum of 3 or
> 4.
> Gene / W2LU
>
>
> ----- Original Message -----
> From:<RLVZ at aol.com>
> To:<towertalk at contesting.com>
> Sent: Saturday, February 12, 2011 2:20 PM
> Subject: [TowerTalk] Adding reflector to 40-m. vertical - Update
>
>
>> Hi Guys,
>>
>> Thank You for the many replies... I appreciate it!
>>
>> Update: Gene and another ham replied that I could simply add the
>> reflector
>> and NOT connect it to the driven element or the transmission  line.  Since
>> time is short before tonights CQWW-RTTY contest... that's the
>> installation
>> method I used.  The spacing probably isn't  optimum as I had to mount the
>> reflector 35' behind the driven  element.  (it's on a dock and that's the
>> only
>> available mounting  place).  But the reflector is  SW of the DE so at
>> least
>> the 2-element  vertical should be beaming NE (Europe) which was my goal.
>> I expected SWR to change with this setup but that was no  change in SWR.
>> Perhaps my reflector is too long at 35'6" ... do  you think I should
>> shorten
>> the reflector or leave it as-is?
>>
>> I'll post a reply tomorrow and let you know if I noticed any  difference
>> in
>> Gain or F/B.
>>
>> 73,
>> Dick- K9OM/4
>>
>>
>>
>> Dick -
>>
>> If "easy"is important, it might be easier to just put up a  parasitiec
>> reflector.  Resonate at 6.7-6.8 MHZ  and place about 25  feet behind your
>> present vertical.  It will affect your SWR but if your  Xmtr will tune ok
>> and
>> your feed line isn't too long ( lossy) you should be  good to go. Without
>> a
>> lot of fuss your gain and f/b should be about the same  as driven two
>> element.
>>
>> Gene
>>
>>
>> ----- Original Message -----
>> Subject: [TowerTalk] Adding reflector to 40-meter vertical
>>
>>
>>>   Hi Guys,
>>>
>>> I've got a ground mounted 1/4 wave 40-meter vertical  located at the edge
>>> of a saltwater river.  Before sunset  tonight, I want to add a 1/4 wave
>>> reflector behind it to add a little  more gain towards Europe.  (a fun
>>> little experiment)   I'm only looking for one direction with this
>> antenna:
>>>   towards Europe... so I'll be end firing it NE with the reflector to the
>> SW  of the
>>> driven element.
>>>
>>> A couple quick  questions:
>>>
>>> 1) Should I locate the reflector 1/4 wave (33')  behind the driven
>>> element
>>> or is there a better distance to use for a  simple and quick setup?
>>>
>>> 2) I'm looking for the simplest method  of feeding these antennas as I
>> have
>>> limited parts at this temporary  location: a T-connector and  coax!
>>> Would
>>> the use of a UHF  T-Connector and  then individual feedlines to each of
>> the
>>>>   verticals be the quickest  way to connect them?  If so, any
>>>   recommendations  or feedline  lengths?
>>>
>>>   Thanks!
>>>
>>> Dick- K9OM/4
>> _______________________________________________
>>
>>
>>
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