SB-401 Question

[Ed Richards]

Well, Mark;

The 4th harmonic does fall in the 15 meter band. Maybe it is strong
enough to cause interference ?

Ed Richards

On Thu, 18 Oct 2001 13:55:01 -0400 Mark Graalman WB8JKR <wb8jkr at JUNO.COM>
writes:
>   Ed, according to my manual if the 401 is used with the
> 303 RX the trap is removed. I've run all the numbers on
> this and see absolutely no reason why the trap was ever
> needed to begin with. The only thing it could possibly do
> is guard against the 4th harmonic of the LMO which seems
> ridiculous to me
>
> Mark  WB8JKR
>
>
>
> On Thu, 18 Oct 2001 10:29:39 -0400 Ed Goss <meg at APLCOMM.JHUAPL.EDU>
> writes:
> > Hello,
> >      Can anyone familiar with the SB-401 transmitter remind me why
> > some rigs have the 21 mHz trap installed, and some don't?  I've
> > been through the manual several times and it appears that all 401
> > transmitters should have this part installed.  Perhaps it's only
> > needed if you intend to work transceive?
> > --Ed, N3CW--

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