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Date: Mon, 23 Jul 2012 13:48:51 +0200
From: =?UTF-8?B?U3RlZmFuIFNjaMOkZmVy?= <Stefan.Schaefer@iup.uni-heidelberg.de>
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Subject: Re: LF: Re: 502 CQ
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PS: There is no definition that your ears have to be at least as good as=20
your mouth.
Especially on LF and MF there are much more RX-only stations who are=20
happy to receive a signal, maybe even in CW. The bigger your mouth, the=20
wider the distance you can reach RX-stations. If i would be a RX-only=20
station on LF, i would be amazed by receiving a signal from e.g. >=20
3000km. If nothing can be received then i would tend to focus on other=20
bands after some time. And who knows, maybe some of these RX stations=20
become interested to start arranging a TX system as well!
On the other side, i am happy to receive signal reports from OMs with=20
big ears. So it is always worth for everyone to do what is possible by=20
the personal limitations, the RX and TX side indenpendently. :-)

73, Stefan/DK7FC



Am 23.07.2012 13:21, schrieb Stefan Sch=C3=A4fer:
> Hi Geri,
>
> Am 23.07.2012 08:17, schrieb Holger 'Geri' DK8KW DI2BO W1KW:
>> Yes, it's partly due to groundwave/skywave conditions but I am=20
>> already known as the crocodile (big mouth, tiny ears) over here in=20
>> Northern Germany because my signal is 599 all around while I can=20
>> barely hear people.
>
> Mostly the description "crocodile" is used by those who are unable (or=20
> somehow unwilling) to radiate a decent signal on the band, LF or MF.=20
> If a poor antenna is used and then just a few 10 watts RF power, then=20
> it may be normal that you cannot hear them, depending on the path and=20
> time and QRN situation. If you have a good antenna and high power then=20
> it is no problem for others to hear you. If those OMs think "i can=20
> hear him but he cannot hear me, so he is a "crocodile"" then this is=20
> not your problem. So maybe you simply have a big mouth and normal ears=20
> but the other station has a small moth and normal ears! :-)
>
>> On LF I had optimized my receiving system pretty much but on MF I=20
>> have a high noise floor, probably from household electronics.
> Hm, normally this is a stronger problem on LF. But PA7EY has reported=20
> the same, his LF noisefloor is lower...
>
>> One solution surely is to put an e-field antenna some 25m away from=20
>> the house into the garden, equally far away from all houses in the=20
>> neighborhood.
> Yes this is certainly a good idea. For me this is no option though.
>
>> Currently I am using my transmitting umbrella antenna to receive,=20
>> which always proved best on LF but probably needs some re-thinking=20
>> for MF.
> My transmit antenna produces a big receive signal level of course but=20
> the S/N is at least 6 dB worse than the small active E field probe=20
> produces! (Of course i used an attenuator to achieve the same signal=20
> level, for comparison).
>
>
>
> 73, Stefan/DK7FC