[Elecraft] FL1 OP1 ssb filter

[Don Wilhelm]

Dan,

You can select any of the OPx filters - they all route
to the filter on the SSB board.

It sounds like the BFO is not aligned correctly (at
least the LSB one).  The low frequency corner of the
passband should be near 300 Hz.  Take a look at Step 3
of the Dial Calibration article on my website
http://www.qsl.net/w3fpr for more information.

73,
Don W3FPR

On Fri, 9 Jan 2004 18:58:27 -0800, Dan Presley wrote:

> 
> I need some help- I aligned my filters with Spectrum
> Analyzer ( I'm a 
> mac guy) and the cw filters came out right on the
money
> where I want 
> them (600Hz sidetone). The problem is with FL1 OP1 on
> SSB- when I use 
> this to listen to LSB, it's very muddy and pinched,
but
> if I cycle to 
> FL 2,3 & 4 ( at 2.2, 1.8 & 1.6 widths) it's fine. I
can
> adjust FL1 
> 'past' OP1, but as I understand it that's not the
right
> way to do it- 
> it should stay at OP1 as a fixed filter. I'm wondering
> if I'm seeing 
> a problem with the fixed filter on the ssb board, or
am
> I missing 
> something? I seldom use ssb; just thought it shouldn't
> be this way. 
> Any thoughts?

Don Wilhelm W3FPR
Wake Forest, NC
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