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radio transmit power?



 
 
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  #1  
Old September 27th 04, 04:15 PM
Cub Driver
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Default radio transmit power?


5 watts TX output power (at 9.6VDC. 3.5W PEP typical, 1.5W carrier)

Okay, what's being said here? This is the spec for the Vertex radio. I
notice that the Icom says 5 watts PEP. What's the different between TX
and PEP?

Thanks!

all the best -- Dan Ford
email: (put Cubdriver in subject line)

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  #2  
Old September 27th 04, 05:19 PM
Gilan
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I have the Vertex Standard VXA-210 and I have communicated over 20 miles
with it.
I'm sure with a better antenna it would reach even farther.


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  #3  
Old September 27th 04, 07:10 PM
kontiki
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What that means is, that during instantaneous peaks in modulation the
power output can reach as much as 3.5 watts.

PEP stands for Peak Envelope Power and is applicable to radios using
Amplitude Modulation (either AM or SSB). With AM the audio power combines
with the RF (or carrier) power and on peaks can reach as high as 3.5.
Just keying the unit with no modulation results in a 1.5 watt carrier.

This is not true for FM radios which modulate the frequency of the
carrier, as opposed to its amplitude. The audio information of the AM
transmitter is contained in its envelope, as opposed to variations in
carrier frequency.

Cub Driver wrote:

5 watts TX output power (at 9.6VDC. 3.5W PEP typical, 1.5W carrier)

Okay, what's being said here? This is the spec for the Vertex radio. I
notice that the Icom says 5 watts PEP. What's the different between TX
and PEP?

Thanks!

all the best -- Dan Ford
email: (put Cubdriver in subject line)

Warbird's Forum
www.warbirdforum.com
Piper Cub Forum www.pipercubforum.com
Viva Bush! www.vivabush.org


 




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