[TowerTalk] ICE 419B schematic

[Jim Brown]

On 7/20/2011 1:25 PM, N2TK, Tony wrote:
> Oh and at V26B a number of years ago we were using two different brands of
> filters. I brought down my set of 'NQN receive filters, just in case. The
> 160M op was complaining about 80M nailing 160M. He swapped out the other
> filters for the 'NQN and his problem went away.

Also, don't rule out stubs as part of a solution.  Carefully tuned stubs 
built with beefy coax are typically good for 20-28 dB of attenuation, 
depending on frequency.  There's some good stuff about this on K1TTT's 
website, and a lot more on my website.

http://audiosystemsgroup.com/Coax-Stubs.pdf

Stubs are REAL easy on lines feeding monoband antennas, but switching 
gets very tricky on multiband antennas because the switching network 
becomes part of the stub.

73, Jim K9YC