[TenTec] swr

[george fritkin]

There are tons of "loss vs swr" programs  for different types of coax, just search the net.  I have a Zerofive 43 foot antenna.  On 75 the SWR is <3.0:1.  On 160 it is <4.5:1.  Check the programs using Times LM-400 cable.  You will find total loss, including coax loss and swr loss to be in the area of <1.5DB.
 
I do not want to insult anyone, but SWR is only one factor when considering the effectiveness of an antenna
 
George, W6GF 
 
 
 
 


--- On Mon, 8/16/10, Richards <jruing at ameritech.net> wrote:


From: Richards <jruing at ameritech.net>
Subject: Re: [TenTec] swr
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Date: Monday, August 16, 2010, 3:48 PM


Not arguing... but how do we know that?    So much of the literature 
claims that impedance is either way high or way low, and SWR is way 
wacky, and, therefore, there are HUGE losses in the coax...   Your 
comment is more encouraging.

Using a coax loss measurement program one finds on the Antenna Book CD 
Disk,  it seems like it is 1.5 dB to 1.8 dB on 160 meters (less on 
higher bands.)
This does not comport with much of the literature on these antennas.

Can you embellish your position any?   I am very curious.  (Again... not 
arguing, just asking as it IS rather more optimistic than some others 
have indicated.)

And yes...  you identified ANOTHER problem with the description.  Good eye.

========================== K8JHR  ==================================

On 8/16/2010 6:40 PM, george fritkin wrote:

should say "using high loss coax" not low loss.

using Times LM-400 or Belden RG-213 is under 1 DB typically with these
types of antennas with moderate SWR.

===================================================================
_______________________________________________
TenTec mailing list
TenTec at contesting.com
http://lists.contesting.com/mailman/listinfo/tentec