[UK-CONTEST] Was NFD originally an emergency capability test?

Bob Henderson bob at 5b4agn.net
Wed Jun 8 03:49:00 PDT 2011


Oh Dave...... the glorious shades of grey.........

If an outboard unit comprising mixer, IF, demodulator and AF stages were
attached to a broadband RF amplifier within your transceiver, wouldn't this
too count as NOT a second receiver?

Just what extent of independence would a second receiver need to qualify as
such?

73 Bob, 5B4AGN

On 8 June 2011 08:56, Dave Lawley <dave at g4buo.com> wrote:

> > From the rules as currently drawn, it appears local Skimmer use is
> precluded
> > in both the Restricted and QRP sections due to only one receiver being
> > allowed.  (Two in the case of a transceiver with built in second
> receiver)
> > The limit of a single antenna would anyway provide a further challenge.
>
> Not true Bob, as I put in my G3RCV/P writeup you could run a Skimmer
> from the IF of your rig. Pausing from TX for say 30 seconds would give
> it time to find a great number of CQing stations. Further, I suspect
> this capability may become standard in SDRs in a few years' time.
>
> Ironically, a tight first IF roofing filter will limit the range of the
> Skimmer. So, you make it switchable.
>
> 73, Dave G4BUO
>
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