John...
So your 9 MHz 250 hz filter showed loss only when you had the other 250 hz
filter selected also? I will check again tomorrow, but I think my TT 9 MHz
250 hz filter has loss no matter which of the other filters are selected. In n1
position, there actually is a bit of gain (TT 500 hz).
Only the 9 MHz filters are TT. The others are all Inrad.
...Dave
Sent from my iPad
On Apr 19, 2011, at 9:35 PM, John Oglesby <john91@charter.net> wrote:
> Dave - I assume that you mean n-1 or n-2 buttons on the front panel of
> the Omni. I had similar issues with my TenTec filters. With 250Hz
> selected on the main filter, if I selected 250Hz on n-2 (I assume that
> this is what you are doing) I had significant signal loss even with the
> jumpers in their proper position. I ended up adding an amplifier stage
> post filter to get the gain balance correct.
>
> When I replaced that second 250Hz filter with an Inrad filter the gain
> balance was right on the money and the amplifier stage was removed. My
> assumption was poor passband matching between the two TenTec filters was
> the problem.
>
> 73
> John
> N9RE
>
>
> On 4/19/2011 3:47 PM, Dave Edwards wrote:
>> Anyone have tight CW filters in their Omni VI+ ??
>>
>> I'd have to pop the bottom cover to see exactly what I have, but I know I
>> loaded it up with
>> tight CW options.
>>
>> If I listen to a S9 +10db signal on 250hz, and press F1, the signal strength
>> stays the same.
>> If however, I press F2, the signal drops to about S5.
>>
>> Could there be a mistake in the insertion of the filter, or what might I
>> check If I flip it over and look inside there?
>>
>> Thanks for any thoughts on this.
>>
>> .....Dave
>> _______________________________________________
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>>
>>
>
>
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