[1000mp] W8JI INRAD roofing filter measurements

[Mike Kasrich]

I would have to second what Pete has said.  I dont know about the 
measurements per se but during a contest someone can saddle up to you 
pretty close w/o you being bothered.  I do recall some instructions 
regarding turning the IF gain up two notches when the roofing filter is 
installed but that is only if you previously had the 70 Mhz IF mod 
installed and are taking it out.

Mike/aj9c

Pete Smith wrote:

> Put it in, Dave - takes 10 minutes and the difference in contest 
> conditions is remarkable.  I suspect that this will turn out to be 
> some sort of measurement anomaly - why would inserting a 6 KHz filter 
> in the first IF cause such marked deterioration in measurements with 2 
> KHz spacing?
>
> 73, Pete N4ZR
>
> At 10:41 PM 4/24/2007, you wrote:
>
>> Lou,
>> Did you get any reply?
>> I have an INRAD roofing filter sitting here for more than a year, 
>> waiting for some spare time, and am obviously interested in this topic.
>> 783,
>>
>> Dave, W4DN
>> ----- Original Message ----- From: "Lou" <louandchop at sbcglobal.net>
>> To: <1000mp at mailman.qth.net>
>> Sent: Monday, April 23, 2007 3:50 PM
>> Subject: [1000mp] W8JI INRAD roofing filter measurements
>>
>>
>>> Hi,
>>>
>>>
>>>
>>> This may have already been discussed, but in reading the W8JI 
>>> website with
>>> respect to MkV RX performance, his measurements showed a marked 
>>> decrease
>>> with the INRAD roofing filter installed.  Other sources, like the QST
>>> review, show a significant increase.  Was the difference between the
>>> measurements performed by these two sources ever resolved?
>>>
>>>
>>>
>>> Lou W7HV
>>>
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>>
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