[AK-VHF] RSVP: 6 Meter Antenna Test on Tuesday Evening

Edward R Cole kl7uw at acsalaska.net
Tue May 5 16:48:52 EDT 2020 

To obtain true circularity in linear-pol, mount 
two dipoles at right angles (both horizontal) and 
feed them thru a splitter with one dipole with 
1/4 wavelength more coax.  This produces circular 
pol aiming straight up but omni horizontal 
pol.  Its called a "turnstyle" antenna.  Quite a 
favorite for working satellites as well as local stations.

The famous "egg-beater" antennas are trunstyle loop antennas.

73, Ed - KL7UW

At 10:29 AM 5/5/2020, you wrote:
>Brandon,
>
>Don't get me wrong, a simple horizontal dipole 
>is good start and useful for near 
>omni-deirectional antenna in an urban setting.
>
>I worked many stations on Es as far as KY and TX 
>with my simple 3-element yagi.  It does not take 
>up much space (mine has elements spaced 32 
>inches so only a little more than 5-foot 
>long.  I converted a 72-MHz DB Products 
>commercial antenna by just lengthening the elements.
>
>Ed
>If I hear you I will transmit 80w (max power 
>with my amp).  I've worked KL6M with it.
>
>At 09:46 AM 5/5/2020, Brandon Clark wrote:
>>Hello grou
>>
>>Good points about band openings. What I'm 
>>envisioning with this antenna is to just get a 
>>start on the band, and use it for the digital 
>>net coming soon. Later on I'll probably be 
>>setting up something more substantial for 
>>working band openings. I need to come up with a 
>>design that is reasonably compact though. Fun project for another day!
>>
>>I'm going to go on-air tonight at about 8 PM 
>>local time and do some testing. I'll be 
>>operating on 50.125 USB. I'll start out with 
>>about 20 watts and then adjust up or down as needed.
>>
>>Thanks everyone,
>>
>>Brandon
>>
>>
>>
>>On 5/5/20 8:21 AM, Edward R Cole wrote:
>>>HI Guys!
>>>
>>>At your distance probably not that bad.  I've 
>>>noted that crosspolarity adds about 15-dB loss 
>>>to signals (not the 20+ dB theoretical 
>>>loss).  On occasion in the past my eme array 
>>>was switched to Hpol on the 2m net and some 
>>>folks noted I was not as strong.  Fixed by 
>>>switching to Vpol with my x-yagi  array.
>>>
>>>IÂ  might listen in with my 3-element yagi 
>>>(thought bolted to side of the tower in SE direction).
>>>
>>>On 6m CW/SSB (and probably digital modes, too) 
>>>all activity is horizontal polarity in the 
>>>rest of the world.  Might make a difference 
>>>working into the lower-48 and Canada during 
>>>openings (May-July) is the sporatic-E season 
>>>(already openings have occurred farther south: Montana to South America).
>>>
>>>One really should think of at least a small 
>>>yagi using Hpol to take best advantage of 
>>>these openings.  Monitor 50.125 for SSB, 
>>>50.313 for FT8 or 50.193 for WSPR pointing 
>>>azimuth 125 degrees. On our long RV trip in 
>>>summer 2018 I worked 26-states on 6m-SSB from 
>>>CO (DN70) on one day during the CQ VHF Contest 
>>>in July using a moxon at 14-foot (mast bolted to RV ladder).
>>>
>>>GL
>>>
>>>73, Ed - KL7UW
>>>
>>>At 07:04 AM 5/5/2020, you wrote:
>>>>Hi Craig,
>>>>
>>>>Sure, 8 PM sounds good to me. We might have trouble hearing each other
>>>>though since yu are running vertical polarization. It never hurts to try
>>>>though.
>>>>Brandon
>>>>
>>>>
>>>>On Mon, May 4, 2020, 21:56 Ruthann Bledsoe <ruthann.bledsoe at alaskaair.com>
>>>>wrote:
>>>>
>>>> > HI Brandon >>>
>>>> >
>>>> >Â Â Â Â Â  Sure - Tomorrow (Tuesday) night 
>>>> is fine.  No online conferences or
>>>> > Nets on my agenda (now that the Simplex 
>>>> Net has moved to Wednesday) as far
>>>> > as I know right now.  How about 8 PM 
>>>> ADT?  My Hamfest scavenged Arrow 6M
>>>> > ground plane is up and running, but not yet permanently hooked up to the
>>>> > console inside.  Therefore I can work 6M 
>>>> FM with 5 watts from my HT just
>>>> > fine, plus I can receive SSB or CW with a 
>>>> different handheld at the bottom
>>>> > of the band as well.  Does this work for you?
>>>> >
>>>> >Â Â Â Â Â  Hope to hear you soon.
>>>> >
>>>> >Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 
>>>> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 
>>>> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â  73,
>>>> >
>>>> >
>>>> > Craig
>>>> >
>>>> > ________________________________________
>>>> > From: ak-vhf-bounces at mailman.qth.net <ak-vhf-bounces at mailman.qth.net> on
>>>> > behalf of Brandon Clark <kl7bsc at gmail.com>
>>>> > Sent: Monday, May 4, 2020 19:11
>>>> > To: AK VHF+ Group
>>>> > Subject: [AK-VHF] 6 M antenna testing
>>>> >
>>>> > Hello group,
>>>> >
>>>> > Is anyone up for a 6 M QSO tomorrow? I 
>>>> have finished building the new 6 M
>>>> > dipole that I have been talking about, and 
>>>> will be mounting it on the roof
>>>> > tomorrow morning. If anyone is available for a test or two that would be
>>>> > great.
>>>> >
>>>> > The antenna tunes the lower 2 MHz of the 6 
>>>> M band as-is. The SWR curve is
>>>> > very gradual, so with a tuner it can be 
>>>> made to cover the upper half of the
>>>> > band as well.
>>>> >
>>>> > Brandon, KL7BSC
>>>> > ______________________________________________________________
>>>> >
>>>> >
>>>>______________________________________________________________
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>>>>
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>>>
>>>73, Ed - KL7UW
>>>Â  http://www.kl7uw.com
>>>Dubus-NA Business mail:
>>>Â  dubususa at gmail.com
>>______________________________________________________________
>>ak-vhf mailing list
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>>
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>>Please help support this email list: http://www.qsl.net/donate.html
>
>73, Ed - KL7UW
>   http://www.kl7uw.com
>Dubus-NA Business mail:
>   dubususa at gmail.com
>______________________________________________________________
>ak-vhf mailing list
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>Help: http://mailman.qth.net/mmfaq.htm
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>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html

73, Ed - KL7UW
   http://www.kl7uw.com
Dubus-NA Business mail:
   dubususa at gmail.com

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