[Elecraft] K3S HI SIGNAL

[donovanf at starpower.net]

Hi David, 


My description of our W3AO Field Day antenna configuration was 
simplified to illustrate the benefits of a North/South straight line of 
antennas. 


We actually installed twelve 48 foot masts in two 950 foot North/South 
straight lines separated by 150 feet. We couldn't fit 22 antennas in 
a single 950 foot line! Mast and antenna installation and deployment 
of more than 7000 feet of RG-213 began at 10 a.m. Friday and was 
completed seven hours later. It took less than four hours to dismantle 
the entire site. 


Our site is a school/athletic field complex with more than 25 acres of 
mowed grass and no trees, its slightly elevated above surrounding terrain. 
This type of school/athletic field complex is very common in Maryland. 
Its an ideal Field Day site if you have many portable masts. But our 
VHF ops would still prefer a mountain top location... 


We installed twelve 48 foot masts in two 950 foot North/South lines. 


950 foot line with seven 48 foot masts and 11 antennas broadside E/W: 


0 feet: GOTA Tribander 
80 GOTA dipole 
150 feet: 15 CW 3 element Yagi 
80 RTTY dipole 
300 feet: 20 CW 3 element Yagi 
500 feet: 15 SSB 3 element Yagi 
650 feet: 20 SSB 3 element Yagi 
80 CW dipole 
800 feet: 15 RTTY 3 element Yagi 
80 SSB dipole 
950 feet: 20 RTTY 3 element Yagi 




950 foot line, 150 feet to the East, with five 48 foot masts and 11 antennas broadside E/W: 


0 feet: 40 CW 2 element Yagi 
40 CW dipole 
250 feet: 10 CW 3 element Yagi 
40 GOTA dipole 
400 feet: 50/144/432 MHz rotatable Yagis 
40 RTTY dipole 
800 feet: 10 SSB 3 element Yagi 
40 SSB dipole 
950 feet: 40 SSB 2 element Yagi 


73 
Frank 
W3LPL 











----- Original Message -----

From: "david" <aj4tf at arrl.net> 
To: donovanf at starpower.net 
Sent: Tuesday, June 26, 2018 2:23:17 AM 
Subject: Re: [Elecraft] K3S HI SIGNAL 




At W4UA, we don't have that luxury...the trees are what they are. We have one beam and several dipoles. What I think happened is that the beam operator swung the beam so it was pointing at the broadside of my doublet, while we were both on the same band... poof. 


But, now I'm curious...I know you were 15A, but 15 dipoles 100 feet apart is more than 1000 feet... 




On Mon, 2018-06-25 at 12:07 -0400, donovanf at starpower.net wrote: 


We routinely operate three or more K3 transceivers on the same band 
at W3AO, four on the band our GOTA station is operating. Not only 
is there no damage to the K3s and no HI SIG warnings, we don't hear 
any cross-station interference at all! 


The trick is to use horizontally polarized antennas installed tip-to-tip 
with at least 100 feet of spacing between each other. 


73 
Frank 
W3LPL 


----- Original Message -----

From: "aj4tf" <aj4tf at arrl.net> 
To: elecraft at mailman.qth.net 
Sent: Monday, June 25, 2018 10:06:16 AM 
Subject: Re: [Elecraft] K3S HI SIGNAL 

Thanks for the inputs on and off list. It appears that during FD we may have 
had two rigs on the same band inadvertently. I'll be talking with support 
this week. By the way, I got a personal message from Wayne on this topic. 
Do you think that would happen with Yacomwood? 

David AJ4TF 
Elecraft fan for life 




-- 
Sent from: http://elecraft.365791.n2.nabble.com/ 
______________________________________________________________ 
Elecraft mailing list 
Home: http://mailman.qth.net/mailman/listinfo/elecraft 
Help: http://mailman.qth.net/mmfaq.htm 
Post: mailto:Elecraft at mailman.qth.net 

This list hosted by: http://www.qsl.net 
Please help support this email list: http://www.qsl.net/donate.html 
Message delivered to donovanf at starpower.net