I'm assuming these commercial services are around 460 MHz - what about a stub filter? a high quality open stub tuned to whatever transmissions are ailing you may do the trick.
PAR electronics is also famous for excellent filtering products.
Andrew Rich wrote:
I think I went a little overboard.
I replaced my coax with heliax and fitted a pre-amp to the base of my antenna.
Now all I get is break through from commercial services.
Oh well.
I went from RG213 to LDF4-50. And I can now access a repeater 150 km's away I could not before.
Have to bay antennas and back of the pre-amp I think.
Cheers
Andrew Rich VK4TEC [email protected] http://www.tech-software.net
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