Re: LF: Cats among pigeons

[Albert <westberg@xs4all.nl>]

Hello all Opera lovers,

Testing Opera speed op1 till op32 under "lab" conditions without the 
real world phenomena like fading and QRN.
The results:
1. if you have solid Opera decodes the received SNR stays the same when 
switching between opera speeds;
2. the only change is the minimum level where decodes are still possible.
After a large number of test transmissions I gathered the following 
results.
Op1   decode @ -24dB Av
Op2   decode @ -27dB Av
Op4   decode @ -30dB Av
Op8   decode @ -33dB Av
Op32 decode @ -37dB Av

Test set up: TX Flex 1500, 0.2 mw output, attenuators Bird and HP > 120 
dB, min. step 1 dB, RX Flex 5000, Software Opera v.1.2.8 Windows 7 64.
73, Albert PA0A