[Premium-Rx] Ten-Tec RX-340 - Amateur Use

[Walter (Volodya) Salmaniw]

At 08:57 AM 2/8/2005, w3jn wrote:
>Therefore, roofing filters of 10, 6, 3, or even 1 KHz switchable are 
>highly desireable, but not necessarily easy to accomplish at the low VHF 
>region with crystals.

Tell me then, why don't all high end HF rigs have this capability?  The Ten 
Tec 340 roofing filter mod looked pretty straight forward and inexpensive 
(using a KIWA 4 kc filter).  Others have done this mod and are happy, but I 
wasn't due to the loss of fidelity.  Guy Atkins and I had problems when we 
tried added a switch to the mod.  Somewhere along the line we lost a lot of 
signal strength, which was not the case if the filter was wired in 
permanently.  I've been wondering about this problem for quite a while.  I 
don't understand why a $4k receiver (ie the 340) wouldn't have such a 
capability.  I re-iterate again that the Ten Tec is a bit of a dog on MW in 
it's unaltered state.......Walt.