In my endless search for ham radio perfection, I am thinking about remote tuning. The station antenna is a 5BTV ground mounted up the hill behind the house. It has approximately 50 radials ( actually, I lost count
. I have made many many trips up and down that hill ( oh my aching knees ) setting up and tuning that antenna, and it works pretty well. I use a Heath SA2040 in the shack to touch it up. Sure would be nice to have some sort of tuner out there with the antenna, and not separated from it by a hundred fifty feet of coax.
- Jerry, KF6VB
I am confused, which is normal for me, but what are you trying to accomplish?
I have a modified 4BTV with an 80 meter kit that has less than 2:1 SWR, edge to edge,
on the 10-40 meter bands, and the 80 meter resonator is set for the phone portion of the band.
The instructions for my 80 meter kit advises not to use a tuner to operate the kit beyond the SWR limits,
as it would not survive.
If your antenna is tuned and the SWR is below 2:1, there isn't any need for a tuner.
The amount of power lost by the frequency/antenna/coax mismatch isn't worth the effort.
If you can't get better than 2:1, then there are other problems.
What kind of soil conditions do you have? Perhaps you need more radials.
I have 125 30+ foot radials under my vertical, and it performs flawlessly.
Contrary to what some people say, longer and more radials are better,
then you know your power is being radiated and not heating the earth.
If you are trying to tune in other bands, you may want to modify your antenna
with added wire elements in parallel to the trap vertical for those bands,
rather than tune it outside the design parameters?