[amsat-bb] YAESU FT-817 TX POWER

Patrick STODDARD (WD9EWK/VA7EWK) amsat-bb at wd9ewk.net
Thu Nov 24 15:08:39 UTC 2016


Years ago, I measured the output frmo my two FT-817NDs. One was
purchased in 2004 when that model was released, and the other in
2008 when I started working SSB satellites. Both of these radios
will transmit at 5W on high power, across 2m and 70cm, when I
tried this into a dummy load.

These radios will default to the 2.5W power level when powered
on internal battery packs that don't provide some level of voltage
above 11V, but can transmit at 5W when you select that power level
with the PWR button. This was the case with the Yaesu NiCad
packs supplied with the radios, and with aftermarker 9.6V NiMH
packs I had been using for many years. I now use the Windcamp
LiPo packs that are nomially rated at 11.6V. With the Windcamp
packs, my radios power up and start out at the high (5W) power
level, instead of having to manually select that with the PWR
button. I also like the separate charging port for these packs.
Since installing the Windcamp packs a few weeks ago, I have been
happy with how they perform. Charging is easier, and quicker,
than using higher-capacity NiMH packs as I did in the past.


Twitter: @WD9EWK

On Thu, Nov 24, 2016 at 1:35 PM, jeffory broughton <
jefforybroughton at gmail.com> wrote:

> Has anyone ever taken time to actually measure the tx power on vhf and uhf
> of the FT -817 ? After receiving a new one this week ,I took mine to the
> work where we have all the eqpt to spec it out and was disappointed with
> what I saw.
> Thanks to all who reply. Jeff WB8RJY
> jeff broughton
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