[TowerTalk] Bandpass filters - ICE vs Dunestar

[Jim Lux]

At 03:42 PM 1/31/2005, David Hachadorian wrote:

>In the ICE design, the signal path goes through 12 sets of relay contacts, 
>10 of which are normally closed. W7WW has complained about intermittent 
>signal dropouts on receive, where he either has to physically smack the 
>box, or transmit one DIT to break through what is apparently an insulating 
>film on one of the normally closed relay contacts.

DO you mean that there are essentially 6 filters in series which are either 
in the circuit, or there's a shunt around it?

As opposed to having a (effective) 1P6T switch on each side of a bank of 
parallel filters? (The latter is what is typical in transceiver LPF sections)