Hy-Gain BN400 Balun problems
Posted: Fri Jul 30, 2010 2:24 am
Anyone have intermittent problems with a BN4000 balun on a TH11 or Hy-Gain
yagi? I am experiencing swr problems at times and can "excite" the problem
with my amp and take care of it for as long as I operate that session, amp
turned off after initial "exciting."
I had to do this with an Ameritron wireless remote antenna switch a few years ago because of faulty contacts but didn't realize what was happening early on.
I have narrowed it down to that area. The swr is usually very decent. I called
Hy-Gain and as I suspected the high dollar device is nothing but a 1:1 current
balun and they said I could wind a choke balun that would work. I have done
this years ago with TH6's when the baluns failed AND they do work very well.
They are just not convenient to screw and unscrew cables. Use Wireman
clampon ferrites for large coax, 5 or 6 near the termination point, if you have to
have ferrites. I am using them now, but personally never needed them over the years to make a system work.
Just curious if this symtom has been experienced by anyone who had to replace
the BN4000. Thanks for any help. I don't need a theory lecture, just the problem related above. I don't need to use the balun if it is going bad. Sorry
to be direct but usually when I ask for help with a specific problem on here, I get everything but the kitchen sink theories from a few.
73 k4ws
yagi? I am experiencing swr problems at times and can "excite" the problem
with my amp and take care of it for as long as I operate that session, amp
turned off after initial "exciting."
I had to do this with an Ameritron wireless remote antenna switch a few years ago because of faulty contacts but didn't realize what was happening early on.
I have narrowed it down to that area. The swr is usually very decent. I called
Hy-Gain and as I suspected the high dollar device is nothing but a 1:1 current
balun and they said I could wind a choke balun that would work. I have done
this years ago with TH6's when the baluns failed AND they do work very well.
They are just not convenient to screw and unscrew cables. Use Wireman
clampon ferrites for large coax, 5 or 6 near the termination point, if you have to
have ferrites. I am using them now, but personally never needed them over the years to make a system work.
Just curious if this symtom has been experienced by anyone who had to replace
the BN4000. Thanks for any help. I don't need a theory lecture, just the problem related above. I don't need to use the balun if it is going bad. Sorry
to be direct but usually when I ask for help with a specific problem on here, I get everything but the kitchen sink theories from a few.
73 k4ws