radio transmit power?

[Cub Driver]

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

[Gilan]

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.


Florida Flying Gators annual Fly-in
http://www.mitchellwing.com/flying_gators_annual_fly.htm


Have a good day and stay out of the trees!
See ya on Sport Aircraft group
http://groups.yahoo.com/group/Sport_Aircraft/

[kontiki]

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