digitalanalog
Active Member
I took the matching transformer off the end of the antenna (factory location) and moved it to the Center of the
antenna and before I reattached it, I removed the aluminum connecting rods that tie the front,center and end together.
so you now have a ST-2 with a matching transformer mounted in the center on the two long radials and NOT tied into the front
800-900MHz section at the front.
Results:
25-170MHz(aprox) - Hit and miss, some better some way worse, but mostly worse all around.
170-200MHz (aprox) - Better performance, but nothing to great.
200-400MHz.(aprox) - BIG BIG IMPROVEMENT, db measurments doubled and SWR dropped way down..
400-550MHz(aprox) - Much better both SWR and db. I say at least a 15-20% improvement.
550-1000MHz (aprox) - Results were surprisingly about the same. (was amazed the 800-1000MHz did not get any better or worse).
Your results may vary, but this was a very interesting test.
This is truly an amazing antenna, doing simple things to it can make BIG changes.
I also tested this antenna with the WINGS removed, That was interesting as well
I now know what the wings do and where they work as far as band coverage, again I was amazed.
Although not adveretised as such, but as many know, this is a Milair Antenna and
by making a few SIMPLE changes it becomes a Very Good 200-400MHz antenna.
No pieces where injured or harmed in this testing.
and no pieces have been Shortened or Lengthened.
antenna and before I reattached it, I removed the aluminum connecting rods that tie the front,center and end together.
so you now have a ST-2 with a matching transformer mounted in the center on the two long radials and NOT tied into the front
800-900MHz section at the front.
Results:
25-170MHz(aprox) - Hit and miss, some better some way worse, but mostly worse all around.
170-200MHz (aprox) - Better performance, but nothing to great.
200-400MHz.(aprox) - BIG BIG IMPROVEMENT, db measurments doubled and SWR dropped way down..
400-550MHz(aprox) - Much better both SWR and db. I say at least a 15-20% improvement.
550-1000MHz (aprox) - Results were surprisingly about the same. (was amazed the 800-1000MHz did not get any better or worse).
Your results may vary, but this was a very interesting test.
This is truly an amazing antenna, doing simple things to it can make BIG changes.
I also tested this antenna with the WINGS removed, That was interesting as well
I now know what the wings do and where they work as far as band coverage, again I was amazed.
Although not adveretised as such, but as many know, this is a Milair Antenna and
by making a few SIMPLE changes it becomes a Very Good 200-400MHz antenna.
No pieces where injured or harmed in this testing.
and no pieces have been Shortened or Lengthened.
