|
Tobias,
many thanks for the report! Yes I expected
those outer lines, but not that someone would actually hear them... guess I
will have to modify the frequency scheme for future
tests.
Did you happen to observe whether the three
channels were affected by different QSB patterns? On the Heidelberg
grabber, they were clearly different: whenever one frequency suffered a deep
fade, at least one of the others was going strong. But for larger distances
and lower skywave angles the delay spread will presumably be smaller, and 1
kHz spacing may no longer be effective enough.
Back to "pure" single carrier mode
now...
Best 73,
Markus (DF6NM)
Sent: Monday, February 17, 2014 11:20 PM
Subject: Re: LF: DF6NM beacon..
Hi Markus !
Confirming, Three lines and two
more lines, weaker(-10dB), at 475.8 and
471.8 kHz.
73 de dg3lv
Tobias
Am 17.02.2014 23:01, schrieb Markus Vester:
> Dave, many
thanks for the report!
> I'm currently testing frequency diversity as a
possible anti-QSB
> measure, simultaneously transmitting on 472.8, 473.8
and 474.8. I'm also
> listening on these three QRGs.
> Will look for
QSO activity in a few minutes.
> Best 73,
> Markus
(DF6NM)
>
> *From:* Dave G3WCB. <mailto:[email protected]>
>
*Sent:* Monday, February 17, 2014 10:51 PM
> *To:* [email protected]
<mailto:[email protected]>
>
*Subject:* LF: DF6NM beacon..
>
> Hi,
Markus.
>
> I'm copying your CW beacon on
472.8 RST 539. Your signals are very
> steady with
hardly any QSB.
> I don't think I've heard you on
CW before. RX antenna is a tuned
> 80cm square
loop with a pre-amp.
> TEST ON 472R8
KHZ ......VVV TEST DE DF6NM....etc
> 73, Dave
G3WCB IO91RM, nr Windsor under Thames.
>
|
