The Kenwood TS520SE is designed for SSB and CW modes in the 160 through
10 meter ham bands. It also features receive of WWV at 15 MHz. Power
output is 100W.

Are you sure about the 100 watt output? The spec for the TS520S says
160 watt INPUT on CW and 200 watt INPUT on SSB. The adjustment section
of the service manual for a TS520S states that OUTPUT will be greater
than 80 watts on 3.75, 7.15, 14,175, and 21.225 MHz. It also states that
power output will be greater than 50 watts on 28.3, 28.8 and 29.4 MHz.

Get a life chuck, 520's will easily do 100 out anywhere anytime with
good tubes..



Chuck Sherwood wrote:
The Kenwood TS520SE is designed for SSB and CW modes in the 160 through
10 meter ham bands. It also features receive of WWV at 15 MHz. Power
output is 100W.


Are you sure about the 100 watt output? The spec for the TS520S says
160 watt INPUT on CW and 200 watt INPUT on SSB. The adjustment section
of the service manual for a TS520S states that OUTPUT will be greater
than 80 watts on 3.75, 7.15, 14,175, and 21.225 MHz. It also states that
power output will be greater than 50 watts on 28.3, 28.8 and 29.4 MHz.

Get a life chuck, 520's will easily do 100 out anywhere anytime with
good tubes..

I have a life and I have the FACTS. Would you like me to send you
a copy of the alignement page from the Kenwood service manual
quoting the output power?

I own a TS520S and it will NOT produce 100 watts measured by a
Motorola service monitor (when tuned per the instructions in
the manual). Maybe you can abuse the tubes and get more, I never
tried that.

chuck

Anytime the TS-520 does not putout 100 watts keydown into a 50 ohm load
,IT IS BROKE,BROKE, Look at it this way,, 160 watts input at 65%
effeciency = 104 watts output..On HF, 160 thru 15 meters 60 to 65 %
eff. is normal..A service monitor calibrated for VHF/UHF may be a bit
off at HF freqs..It happens .. Hal

Anytime the TS-520 does not putout 100 watts keydown into a 50 ohm load
,IT IS BROKE,BROKE, Look at it this way,, 160 watts input at 65%


Then why does Kenwood, the manufacture, have lower numbers in
their service manual?

I did some testing on my TS520S. With 200ma plate current it produces
about 80 watts on the low bands which is spec. If I crank up the drive
and exceed the 200ma plate current spec, I can get 100 watts on some
bands, but not all bands (like 10m). How long will my tubes last if
I exceed the 200 ma spec? I don't know and its not worth the risk
for a fraction of an S unit.

I looked in a 1992 ARRL handbook. They spec the efficiency of a class
AB amp at 50%. (see section 15). 50% of 160 watts is 80 watts which
is exactly what I am seeing on my radio.

Say what you want. I believe the service manual.

chuck