[TowerTalk] 80m 4-square advice...

Bob Shohet, KQ2M kq2m at kq2m.com
Mon Oct 30 00:14:12 EDT 2017


Hi Matt,
I have interspersed some comments below with >>>>>>
From: Matt 
Sent: Sunday, October 29, 2017 11:54 PM
To: towertalk at contesting.com 
Subject: [TowerTalk] 80m 4-square advice...

I'm finally making some progress towards installing my 80m 4-square and
looking for some advice before I finalize the installation.   Is anyone out
there using the Comtek system tuned for 3.650? 
>>>>Mine is tuned for ~ 3.6 MHZ
Does it cover both CW & DX phone segments very well?  
>>>>I really depends on the amp.  My ACOM 2000 and AL1500 don’t mind CW or SSB. but the Titan 425 was more fussy.
>>>>Each 4-square behaves differently depending on proximity to surrounding objects (like a forest and ledge), the quality and type of soil around it, whether it is ground-mounted or has elevated radials, the quality and quantity of your radial system, and many, many other factors. 
>>>>My dumped power on 3.75 mhz is not much higher than 3.5 mhz and is under 6% on both frequencies.  It works fine for me and I have many compromises at my qth.
>>>>I have no problem working just about anything I hear except for JT and BY on 80 – very tough paths from here.
I would appreciate any feedback that could be
offered before I decide which segment of the band to tune for.   My
radiators here are full size 3" irrigation tubing and should theoretically
produce about 300 khz at 2:1.

 >>>>  Your 4-square made of irrigation tubing should be even more broadband than my #14 pvc coated wire.

Many thanks in advance.

73 & GL
Bob KQ2M


Matt

KM5VI

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