Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]

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

To: <[email protected]>
Subject: Re: LF: Hartmut's Grabber -- QRP TA
From: "Markus Vester" <[email protected]>
Date: Fri, 10 Jan 2014 20:57:28 +0100
Authentication-results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of [email protected]) smtp.mail=[email protected]; dkim=pass [email protected]
Delivered-to: [email protected]
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20121107; t=1389383851; bh=NT94hXF7nzVS2XnWJjGeL2qwNY2RzPDW/+gJgG2e150=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=hWg2lAiw0/ntzSECMCFCe4ePKWmtvFfZ52glBDfIqqrIERQGwiCSf2iMMRMtzAN1s JLKSA09AXV4jpAFLNLm+tXNQUly3DskgH2nTwbzrq/io4xhQzVBGZ8VxNUNUYW7Lll e3GbjJm1HxDrQd9Gn2a+p+JWrxAysxrVKu22Ttyg=
Importance: Normal
References: <[email protected]>,<[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <E84BB8E2D4374950859F6036460CBE31@White> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
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
>>>
>>>
>>
>>
>>
>>
>>
>
>

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