On Oct 24, 3:05*pm, Cecil Moore wrote:
JIMMIE wrote:
He found he could get it to tune up on all the HF bands but only
by changing the length of his feedline between the tuner and antenna.
I was thinking it may be nice to have a tuner that could control an
external relay to switch in/out custom networks for adapting it to
site specific operating conditons.

Why even have a tuner if you are going to switch the length
of the feedline?

Because it would require only one external switch, be useful on random
lengths of antenna, probably a few more I could think of if I didnt
have to get to work.

Jimmie

Because it would require only one external switch, be useful on random
lengths of antenna, probably a few more I could think of if I didnt
have to get to work.

Jimmie
--------------------

Good reason. How many variations of feed line length can you have?
Enough to handle all the frequencies you might want to use? Possible,
but that's a lot of switches/switching. Oh well, a tuner just seems
simpler.
I gotta do that 'four letter word' too...
- 'Doc

In article
,
wrote:

Because it would require only one external switch, be useful on random
lengths of antenna, probably a few more I could think of if I didnt
have to get to work.

Jimmie
--------------------

Good reason. How many variations of feed line length can you have?
Enough to handle all the frequencies you might want to use? Possible,
but that's a lot of switches/switching. Oh well, a tuner just seems
simpler.
I gotta do that 'four letter word' too...
- 'Doc

i'd suggest contacting the manufacture and describe your situation
and ask what the range is

I saw a LDG tuner i was looking at had a 10:1 the ones in my
rigs claim up to 3:1

i'd suggest contacting the manufacture and describe your situation
and ask what the range is

I saw a LDG tuner i was looking at had a 10:1 the ones in my
rigs claim up to 3:1

Internal tuners are limited by size.
My LDG and MFJ 949 do have much greater range than my internal tuner.

I consider the internal tuners to be a convenience for use on fairly well
matched antennas. Many serious multiband antennas requiring a tuner
benefit from a remote tuner to keep coax losses at bay and disable the
internal tuner. I built the LDG 11 kit (no longer available) into an ammo
can for automatic remote tuning. I hear the price on the current production
remote box is still decent.

Even great big wide range manual tuners can get stumped by impossible
matches. Those that seem to be able to, risk arcing or burning components.