[R-390] 4KHz filters

[Llgpt at aol.com]

The 4 kc mechanical filter in the R-390a was the most used filter by the military and will fail long before the other filters do. Most have reached the end of their life cycle by now and will continue to fail at a rapid rate. The mechanical filter will only resonate a given number of of times before it's life cycle is reached.

Merry Christmas,

Les Locklear


In a message dated 12/18/2004 4:56:05 AM Eastern Standard Time, "Bernie Nicholson" <vk2abn at batemansbay.com> writes:

>There have been many instances of failure of the 4 KHZ filters I have personally seen 4 If strips where this has happened but I was suprised to find that these filters are available on Fair radios site they are the exact part no 526 9160 009 and are 65$ US I ordered 2 the other day and they seem to have a gud supply The date code is 1967 they were probablly produced for the EAC contract, Go to fair Radio and look for MECH Filters .Regards To Everyone Bernie N
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