Yes, I've now got a commercial synth that goes down to 100kHz in 1Hz steps
which should solve your need for N/M Hz intervals. It can supply up to
13dBm so putting that into my (-36dBi) gain antenna may be enough. If not,
can always add a quickie amplifier module
You can either have the carrier derived from Caesium (2 - 3 hours notice
needed)
or from GPS (30 minutes notice)
Andy G4JNT
www.scrbg.org/g4jnt/
----- Original Message -----
From: "Peter Martinez" <[email protected]>
To: <[email protected]>
Sent: Wednesday, March 08, 2006 5:51 PM
Subject: LF: Real QRP tests
> >From G3PLX:
>
> If there's anyone within about 500km from me at 54N 3W (i.e. daytime
surface
> wave range) who could transmit a few micro-watts of very stable
(preferably
> GPS-derived) carrier on 136kHz, I would like to run some tests with my
new
> GPS-locked reception scheme to see how low we can go and still detect that
> there's something there. It may take some time to detect the signal, but
> with that sort of low power there shouldn't be too much problem with
leaving
> the transmitter on for a day. A quick calculation says that 25mA r.m.s. of
> antenna current into an average antenna should produce plenty enough
signal.
> That's only 150v rms or so, depending on the antenna. The more stable is
> the signal, the lower down I should be able to detect it.
>
> Any one for QRPP?
>
> 73
> Peter G3PLX
>
>
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.375 / Virus Database: 268.2.0/276 - Release Date: 2006-03-07
>
>
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 268.2.1/277 - Release Date: 2006-03-08
|
