[amsat-bb] AO-7 Distance record.

John Hackett archie.hackett at hotmail.com
Sat Aug 25 19:27:38 PDT 2007

Hi Thomas, Mak,
                       Don't worry about it ... (I'm not) ... it doesn't 
matter which program one uses to calculate the distance ... Frei Island to 
Japan is still the longest LEO contact to the best of my knowledge ... 
though that one was on FO-20.

7800 or "merely" 6500Km on AO-7 ... it's still better than a kick up the 

At least I do have the QSL's for the regular contacts from Frei Island to 
Eagle River, Alaska.


However, the distance is not so important but it is interesting to be able 
to illustrate what can be done with low power and home brew gear.


It's refreshing to see more and more American stations rediscovering CW and 
SSB on AO-7 but PLEASE !!!! watch the power. The gentleman "crowing" about 
your amplifier ... SWITCH IT OFF !!!.

The *ONLY* time you need an amplifier is when you're using a 50 ohm resistor 
for an aerial.

(Tongue-in-cheek of course but it is permissible to use common sense). The 
newcomer often uses far more power than is necessary ... and I can assure 
you, anadequate receiving system *DOES* help.

Remember ... near the horizon AO-7 is 300Km away, at TCA (time of closest 
approach) it's only 1000Km above you and you need *A LOT* less power to 

Please read this ...


73 John.   <la2qaa at amsat.org>

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