Return to KLUBNL.PL main page

[Top] [All Lists]

Re: LF: Hartmut's Grabber -- QRP TA

To: [email protected]
Subject: Re: LF: Hartmut's Grabber -- QRP TA
From: [email protected]
Date: Fri, 10 Jan 2014 15:51:57 -0330 (NST)
Authentication-results:; spf=neutral ( is neither permitted nor denied by best guess record for domain of [email protected]) smtp.mail=[email protected]
Delivered-to: [email protected]
In-reply-to: <[email protected]>
References: <[email protected]>,<[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
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

On Fri, 10 Jan 2014, Markus Vester wrote:


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,

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.


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!


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!


<Prev in Thread] Current Thread [Next in Thread>