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Re: LF: 137 QRP

To: <[email protected]>
Subject: Re: LF: 137 QRP
From: "Markus Vester" <[email protected]>
Date: Sat, 8 Jan 2011 15:36:40 +0100
Importance: Normal
References: <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
Dear Mal, LF,
 
...and using microwatts with slow modes like QRSS-60, you can still reach a couple of 100 km in daytime. Attached is a screenshot from the DK7FC DX grabber when I transmitted some dashes barefoot yesterday. Note that annotated powers are signal generator ouput - antenna efficiency is about 0.1 % so radiated power was between 50 uW and 1 uW ! 
 
BTW The first part of the 50 mW dash on 137780 was weak, until I remembered to retune the variometer.
 
Best 73,
Markus (DF6NM)
 

Sent: Saturday, January 08, 2011 3:05 PM
To: rsgb
Subject: LF: 137 QRP

All LF
I think you will find that qrp on 137 is not the same as on 500.
137 needs a good amount of power radiated to cover even modest distances. With around 1w erp it is possible to cover all EU and further daytime or night time on CW. 1000 to 1500 miles normal, during darkness there appears to be some enhancment.
G3KEV
 

Attachment: dk7fc_df6nm_qrp_110107_1010.jpg
Description: JPEG image

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