Subject: | |
From: | |
Reply To: | |
Date: | Thu, 5 Jun 2003 22:59:47 +0100 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
Steve and all
as it is a half wave vertical, it is low Q and hence has wide skirts,
and as a result doesn't need an ATU external to the rig.
Should you want to get maximum power out from your output stage, then
you could use the internal tuner in your rig.
73 de G3YXX
In message <[log in to unmask]>, Steve Dresser
<[log in to unmask]> writes
>Dave,
>
>Do you get good SWR throughout every band without using a tuner? Traps
>usually make for a narrow tuning range.
>
>Steve
>
>On Wednesday 6/4/03 15:09 David W Wood wrote:
>>Steve
>>
>>The antenna does have traps, some parallel tubing and cross strapping.
>>The radials are about 3 feet in length.
>>
>>It is a stand alone antenna and needn't be on the roof, but as the ends
>>are 'hot' (high voltage) they really need to be above hand height as a
>>precaution. Kushcraft do provide warning tags for the ends!
>>
>>I first used one for the GB90MGY station in April 2002 (the station
>>marking the 90th anniversary of the sinking of the Titanic) and have now
>>used mine with the base about 5 feet above ground at my /p location near
>>the sea for about 2 months with good results - but not as good as my big
>>beam at my home location for the higher bands, but works better than my
>>quarter wave vertical at that location for 40M.
>>This last may be as a result of the highly conductive ground near the
>>sea.
>>
>>73 de Dave - G3YXX
>>
>>In message <[log in to unmask]>, Steve Dresser
>><[log in to unmask]> writes
>> >Dave,
>> >
>> > From what you said about the radials being hot, I assume you mounted this
>> >antenna on your roof. How long are the radials? You mentioned having good
>> >SWR on all bands. Does that mean that the antenna performs equally well on
>> >all bands? How do they get half wave on all bands without the use of traps?
>> >
>> >Steve
>> >
>> >On Tuesday 6/3/03 01:50 David W Wood wrote:
>> >>Hello all
>> >>
>> >>I recently installed a Kushcraft R8, which stands at about 8.5M high.
>> >>It isn't the cheapest, but works as a half wave on all bands from 40M to
>> >>6M.
>> >>
>> >>It has integral radials which have hot ends in view of it being a half
>> >>wave, so these should be out of reach.
>> >>
>> >>It is well built and a a bit heavy to install however, but my sighted
>> >>friend and I put it together and had our first contact within 5 hours.
>> >>
>> >>The SWR is very good over its whole range, so we have negated the use of
>> >>an ATU.
>> >>
>> >>73 de G3YXX
>>
>>--
>>David W Wood
--
David W Wood
|
|
|