Topband: electrical wavelength

[ZR]

I never take anything for granted when accuracy is desired.

I use a noise bridge and my receiver to zero in on the exact frequency, the 
noise backround null is very pronounced with good coax. Beats turning on an 
expensive VNA.

Carl
KM1H


----- Original Message ----- 
From: "HAROLD SMITH JR" <w0rihps at sbcglobal.net>
To: "Bob Kupps" <n6bk at yahoo.com>; "topband" <topband at contesting.com>
Sent: Monday, September 10, 2012 11:04 AM
Subject: Re: Topband: electrical wavelength


Hello Bob,

I have used the published velocity factors for years.
I made a 4:1 balan for my Telrex 20M546 a few years ago with RG14 coax. 
After I
cut it, I checked it

with my GDO and all was fine.

73 Price W0RI



Hi it's still flooded here but I wanted to fire up one of my verticals by 
itself
on 160 and feed it with a half wave of Comscope RG6 since I don't have 
enough 50
ohm line to reach it. I have a AIM 4170 to cut the line with but my question 
to
the group is - how much variation from published nominal velocity factors 
have
you encountered in practice when cutting lines to length? How accurate do we
need to be for 1/4 wave lines?

73 Bob
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK


-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 10.0.1424 / Virus Database: 2437/5260 - Release Date: 09/10/12