[TenTec] Omni VI filters

[Stan Gammons]

On 08/07/2017 05:02 PM, Barry N1EU wrote:
> I don't see how a PIN diode is going to result in abnormally high output.

The 1.8 Kc filter has higher output than the 2.4 Kc or 500 Hz filters.  
That's why I was wondering if the PIN diodes for the 2.4 Kc and 500 Hz 
positions might be the problem.  Would seem odd if that's the case.  I 
guess it's possible though.

>
> What would be a very interesting experiment is to pull all the 6.3MHz i.f.
> filters and simply jumper the in/out filter slot pins together (or bridge
> them with a reasonable size ceramic disc capacitor).  What you should see
> when moving thru and engaging the filter switches is a ramping up output
> from 2.4 to 1.8 to 500 to 250.
>
> Another interesting experiment would be to swap the 2.4KHz filter with the
> 1.8KHz filter and see if the abnormally high output follows the 1.8KHz
> filter or if it stays with the 1.8 filter slot.
>
> Barry N1EU
>
>

When I get the Inrad roofing filter installed, I'll see if I can figure 
out what's going on with the 6.3 Mhz I.F. filters.   I figured the 
roofing filter would have arrived today.  No such luck.


73

Stan
KM4HQE