[Elecraft] IF Shift, PB Tuning, and why neither completely eliminates QRM

2006-08-09 Thread wayne burdick
These terms are often used interchangeably. It's like the terms biannual and semi-annual. One is supposed to mean every six months and the other every other year, but some dictionaries list them as synonyms, because you can make a case for either word having either definition. Similarly,

Re: [Elecraft] IF Shift, PB Tuning, and why neither completely eliminates QRM

2006-08-09 Thread Ken Alexander
--- wayne burdick [EMAIL PROTECTED] wrote: These terms are often used interchangeably. It's like the terms biannual and semi-annual. One is supposed to mean every six months and the other every other year, but some dictionaries list them as synonyms, because you can make a case for

Re: [Elecraft] IF Shift, PB Tuning, and why neither completely eliminates QRM

2006-08-09 Thread Darrell Bellerive
Could the SSB filter on the SSB Option board be made into a variable-passband filter rather than modifying the CW filter? On August 8, 2006 11:18 pm, wayne burdick wrote: You could also modify the K2's variable-passband CW filter to optimize for wide bandwidths (SSB/DATA) rather than narrow.

Re: [Elecraft] IF Shift, PB Tuning, and why neither completely eliminates QRM

2006-08-09 Thread Geoffrey Mackenzie-Kennedy
On Wednesday, August 09, 2006 at 7:18 AM Wayne Burdick wrote: A much better approach to the Filter Shifing problem would be to actually *narrow* the first crystal filter, protecting all subsequent stages. --- May I second