[amsat-bb] Re: Trakbox and Parking Frequency

Brad, K1GTo brad at k1gto.com
Wed Nov 8 14:02:14 PST 2006

Without fully knowing what TRackBox is, it looks like an issue related to
floating point estimation. There should be some more info on the web about
the phenomenon, but basically floating point numbers are stored as a
sequence of sums, not as exact numbers. It may be that the number you desire
can't be represented exactly by a floating point data type. 

That's just a guess, but it resembles something I ran into with floating
point data types not too long ago. 



-----Original Message-----
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
Behalf Of Vincenzo Mone
Sent: Wednesday, November 08, 2006 1:32 AM
To: Amsat - BBs
Subject: [amsat-bb] Trakbox and Parking Frequency

Hi to the list,
it is a while that I've noticed that my trakbox when it terminated to track
the satellites it should put my radio in parking frequency which should be:

RX_Freq : 1296.500
TX_freq :144.800

But I always get:

RX_Freq: 1296.499.9
TX_freq: 144.800

How you can see, the RX_Freq is 1 Hz down.
I've tried to set the
RX_Freq to 1296.501
But when it parks, it goes to:
Can anybody explain me what happens?
Thanks in advance.

73 de Enzo IK8OZV
EasyLog 5 BetaTester
EasyLog PDA BetaTester
WinBollet BetaTester
D.C.I. CheckPoint Regione Campania
Skype: ik8ozv8520


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