[IRCA] SHORT VERTICALS

2014-03-01 Thread Mark Durenberger Mobile
I'm wrapping a 2,000-mile road trip and have occasionally stopped, to stick up my 30-foot modified Dallas Lankford vertical. And something's been bothering me. Lankford's heritage 'short vertical' proposes a 4:1 base match. I've played with this ratio, from 2- to 16- : 1 and, indeed, 4:1

Re: [IRCA] SHORT VERTICALS

2014-03-01 Thread Nick Hall-Patch
What is the inductance of the 200 ohm winding Mark? My guess is that there's nothing a short vertical (which has a capacitive impedance) likes better than a little matching inductance; it's like a loading coil. You might find that your improved sensitivity actually has a bit of a peak at a

Re: [IRCA] SHORT VERTICALS

2014-03-01 Thread Mark Durenberger
-Patch Sent: Saturday, March 01, 2014 2:07 PM To: Mailing list for the International Radio Club of America Subject: Re: [IRCA] SHORT VERTICALS What is the inductance of the 200 ohm winding Mark? My guess is that there's nothing a short vertical (which has a capacitive impedance) likes better than

Re: [IRCA] SHORT VERTICALS

2014-03-01 Thread Nick Hall-Patch
relative signals at both ends of the band). Otherwise...I like your 'antenna-tuner' idea :-)) Regards, Mark Durenberger -Original Message- From: Nick Hall-Patch Sent: Saturday, March 01, 2014 2:07 PM To: Mailing list for the International Radio Club of America Subject: Re: [IRCA] SHORT