Log Periodics

[Ed Tanton N4XY]

Hi Stuart... I am sure there will be lots of other replies, but basically speaking log periodic pros and cons 
boil down to:

	PRO: 	1. Log periodics do exhibit signal gain-but gain lower than 3el yagis
		2. L.P.s have very wide bandwidth compared to yagis
		3. L.P.s do not use traps/etc.
		4. L.P.s-by virtue of their very wide bandwidth-typically cover Phone & CW w/o retuning rig
		
	CON:	1. Log periodics are much larger and heavier than most multiband yagis
		2. L.P.s typically exhibit poor front-to-back ratios compared to yagis
		3. Most L.P.s are more expensive than their multi-banded cousins

I *THINK* that about covers it... I am sure everyone else will let us both know if I have gone astray or 
exaggerated. I seriously considered several LP options about a year ago, and finally, when I had determined 
that to have really good gain 7-30MHz I was going to have to get TWO LPs, one for 6.9-10.2MHz, and the other 
for 13.9-30MHz, I decided it was not possible for me. IF I had the $$$ AND the towers, AND the real estate 
(turning radii) MAYBE. There is still the poor F>B ratio-compared to a 'good' yagi, and the very real 
problems associated with rotating and maintaining such a large set of antennas. (The 'good' yagi I continue to 
refer to is a Hygain TH-11... my final choice [note: does NOT cover 7 or 10.1MHz]-but not a purchase-yet!) 
That sums up what I learned when I was looking. The Cushcraft has reviewed well, and is not THAT much 
larger than that typical 3 el yagi-I think. Good luck & 73.		
-- 
 Ed Tanton N4XY (770) 579-3933 Voice / MBX / FAX Marietta, GA
 QRP-ARCI G-QRP OK-QRP QRP-L  AdvRC  ARRL  AMSAT NCDXF INDXA  
 email: n4xy@avana.net  URL: Coming Soon


--
FAQ on WWW:               http://www.contesting.com/towertalkfaq.html
Submissions:              towertalk@contesting.com
Administrative requests:  towertalk-REQUEST@contesting.com
Problems:                 K7LXC@contesting.com
Sponsored by Akorn Access, Inc & KM9P