Yes Joe, 100% duty
cycle would be ideal. But occasional CW or QRSS id's won't hurt either, as long
as phase is being preserved.
73, Markus
Sent: Friday, January 10, 2014 8:21 PM
Subject: Re: LF: Hartmut's Grabber -- QRP TA
Hi
Markus,
That is most interesting. I remember that occasion
when TX was on later than usual. It will take a bit of tinkering to get
the phase coherent exciter to the class E TX, but this is long overdue
anyway. Would you like a continuous QRP carrier without any
keying?
Best Regards Joe VO1NA
On Fri, 10 Jan 2014, Markus
Vester wrote:
> Joe, > > when you were sending CW a couple
of days ago, the coherent carrier was detectable in my 438 uHz spectrogram in
broad daylight, until 12 UT! So I'm wondering how a low power straight carrier
would fare during night and day? > > Best 73, >
Markus > > > > From: [email protected] > Sent: Friday, January 10,
2014 7:44 PM > To: [email protected] >
Subject: Re: LF: Hartmut's Grabber -- QRP TA > > > Hi
Hartmut, > > Yes, DCF39 must be a real pest as it is so close
geographically and > in frequency. You seem to be dealing with it very
effectively. > Thank-you for running the grabber. > > It's a
pest over here too, but sometimes useful to check the RX system. > >
The TX will be on again tonight. In keeping with the spirit of energy >
conservation being requested by our power company, the TX will run > at
<5 watts tonight to the 100m wire. I hope to watch for the
signals > on your grabber. > > Cheers > Joe
VO1NA > > On Fri, 10 Jan 2014, Hartmut Wolff
wrote: > >> Hello Joe, >> >> thank you for your
kind words! >> >> Still struggling here with my local Pest
DCF39. Between 03:15 and 04:40 UTC >> DCF39 was sending a higher pulse
frequence. That is the reason of the higher >> noise level at that time
and poorer reception of your beacon. >> >> Thank you for your
signal! >> >> 73 >>
Hartmut >> >> >> Am 2014-01-10 13:26, schrieb [email protected]: >>> >>>
Hello Hartmut and Group, >>> >>> Even with only 65 watts
from the TX, strong QRSS100 signals were seen on >>> Hartmut's
grabber at 137.777 so the power was cut to <10 watts by >>>
reducing the drain voltage of the class E amp to 12 V. The
grabber >>> traces faded substantially, but rebounded to clearly
readable around >>> 0630 utc. >>> >>>
Congrats on your impressive RX setup, Martmut! >>> >>>
73 >>> Joe
VO1NA >>> >>> >> >> >> >> >> > >
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