From: Garey Barrell 
Subject: [Drakelist] Re: Passband tuning on R4C with Sherwood 600Hz roofing filter


Steve -

That's one of the "advantages" of the Sherwood filter.  You no longer have 
full passband tuning.  You also no longer have a noise blanker.

When you switch in that filter, you have a LSB, CW only receiver with a 
narrow filter and no noise blanker!

Happy New Year!

73, Garey - K4OAH
Atlanta


At 02:21 AM 1/3/2003, you wrote:
>G'day
>
>Happy new year to everyone on the list!
>
>My Drake R4C has just been fitted with the Sherwood 600Hz 1st IF CW roofing
>filter, in addition to an existing Drake 500Hz 2nd IF CW filter.
>
>Although the Passband tuning control works towards the LSB end of its
>scale, virtually nothing (in the way of a signal) can be heard when it is
>tuned from the central position towards the USB end.
>
>Please can someone let me know if this is normal?  If not, does anyone have
>any idea what could be wrong?
>
>Vy 73
>
>Steve, VK6VZ


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