Same reason a condenser was changed to a capacitor. More modern language.
73
Jim W7RY
-----Original Message-----
From: WA3GIN in King George, VA
Sent: Saturday, May 03, 2014 4:47 AM
To: jim@audiosystemsgroup.com ; towertalk@contesting.com
Subject: Re: [TowerTalk] In Shack Tuner Vs. Remote Tuner
forMulti-BandAntennas
When did matchbox or coupler get replaced with tuner?
I thought a tuner was what was used to TUNE-IN AM and FM broadcast stations
or one TUNES a VFO --- aren't these devices coupling RF from the feed-line
to the feed-point of the antenna? They aren't adjusting the resonance of
the antenna, so what are they tuning? ;-))
Have Fun,
dave
wa3gin
----- Original Message -----
From: "Jim Brown" <jim@audiosystemsgroup.com>
To: <towertalk@contesting.com>
Sent: Saturday, May 03, 2014 3:41 AM
Subject: Re: [TowerTalk] In Shack Tuner Vs. Remote Tuner for
Multi-BandAntennas
On 5/2/2014 11:54 PM, Roger (K8RI) on TT wrote:
Technically the tuner at the antenna is better, but with good coax and
low bands it's hardly worth the effort, but look up the chart in the
handbook for additional loss Vs SWR at a given cable loss. Basically, at
160, 75, and even 40, it makes little difference whether the tuner is in
the shack or remote. Unless it's a long run, if you are using good, low
loss coax, the difference is likely only a few tenths of a db. Look up
transmission line basics (20.1) in the current 2014 book. This chart
has been in there for years, so if you have a different version, just
look gor transmission line basics.
YES, YES, YES.
73, Jim K9YC
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