TopBand: Re: The secret of WB9Z on 160m.

Jon Zaimes AA1K
Sun, 8 Dec 1996 23:29:05 -0500 (EST)

Here's another possibility:

A station with directional receiving antennas, such as Beverages, will often
select the one for the direction that will produce the most points.
>From the Northeast USA, that means Europe. Signals off the back and sides
can be way, way down.

If I'm serious in a 160 meter contest, I usually have a second receiver
hooked up to a small loop or some other "omni" directional antenna. This
receiver can be selected to feed the left ear of the headset, with the main
Rx going to the right ear (or both).

So I pick up signals on the left ear that I'm not hearing on the main
receiver (with the Beverage to Europe). But the "left ear" receiver is
switched out when the run from Europe is hot. I'll pick up the stations off
the back later.

73/Jon AA1K

At 02:29 AM 12/8/96 GMT, you wrote:
>On Sat, 07 Dec 1996 21:43:59 -0800, (Ron Wetjen) wrote:
>>Greeting All,
>>Just read a couple of posts regarding stations hearing (or NOT hearing) 
>>on 160 Meters.  Well, glad to know I'm not the only one who gets 
>>frustrated and wonders why.  I've had the same experiences over the 
>>several years I've worked the 160 Meter Contest.  I CAN NOT work the guys 
>>who are consistantly over S9, but if I call a weaker station, I can 
>>always get them the first or second try.  I even managed to call a few 
>>CQ's last night, and had stations right at the noise level call me ... 
>>worked them right away ... but call and call the loud ones, and they keep 
>>on CQ'ing like I'm not even there!  Still have no explaination for it!  
>Here's a possible explanation for it:  The guys with weak sigs that you can
>work easily probably have very inefficient antennas.  This causes a reduction
>in both their transmitted signal strength and the signal strength into their
>receiver.  On 160 meters it is easy for them to make up received losses so
>they can hear you just fine, but transmitted losses are gone forever.
>Therefore, your signal is very copyable at their QTH in spite of the fact that
>their signal is very weak at your QTH.
>In the reverse situation, the station that sounds loud at your QTH no doubt
>has a good antenna and the above scenario does not apply.  If you hear him but
>not vice versa, it's probably due to either (1) He's running more power than
>you or (2) He has local QRN or (3) Both.
>Make sense?
>73, Bill W7TI

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