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I wouldn=E2=80=99t run the FT-100 or for that matter any 100 watt class rad=
io at 100 watts for any digital modes. The duty cycle for digital transmi=
ssions is very high good way to fry your finals in short order. QRP is the=
way to go for the modern digital modes. I don=E2=80=99t operate any digita=
l modes, (except the original one - CW Morse!), but from what I hear and se=
e in my SDR spectral and waterfall displays, the are a lot of digi stations=
running WAY to much power...ruins it for those who are doing it the right =
way.
As for the effectiveness of QRP on digital modes, back in the late 80s I ra=
n AMTOR using a PK232, an IBM PC Portable, Heath SB line and a three elemen=
t tribander. On an AMTOR QSO on 20 meters with an Australian station, we k=
ept dialing back our power levels to see the minimum required to maintain a=
solid link with no re-sends of data. Got down to about a quarter of a wat=
t to the antennas, tribanders on both ends of the link.
Chris, AJ1G Stonington CT
Sent from my iPhone
> On Mar 3, 2020, at 07:54, Bill Walsh [email protected] [FT100] <FT100@y=
ahoogroups.com> wrote:
>=20
> =EF=BB=BF
> On 3/2/20 6:13 PM, John Geiger W5TD wrote:
>> The manual for the LDG YT-100 tuner says it is rated at 100 watts for th=
e
>> digital modes. Has anyone used it at that power level? Most other LDG
>> tuners have the power seriously derated for digital modes, like 33% of
>> their regular power level.
>>=20
>> I would love it if it did work at 100 watts but don't want to blow it up
>> either.
>>=20
>> 73 John W5TD
> I don't know why you would need such power levels, unless your trying to =
reach Mars or something.
>=20
> I was just trying my hand at some digital so I turned down the power to j=
ust a couple watts. As low as the transmitter would go. A few days later I =
got an automated reply e-mail from some station in Indiana. From central Ok=
lahoma to Indiana on a couple watts!
>=20
> --=20
> "The dog is a gentleman. I hope to go to his heaven, not man's."
>=20
> Mark Twain
>=20
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<p>I wouldn=E2=80=99t run the FT-100 or for that matter any 100 watt =
class radio at 100 watts for any digital modes. The duty cycle =
for digital transmissions is very high good way to fry your finals in short=
order. QRP is the way to go for the modern digital modes. I don=E2=
=80=99t operate any digital modes, (except the original one - CW Morse!), b=
ut from what I hear and see in my SDR spectral and waterfall displays, the =
are a lot of digi stations running WAY to much power...ruins it for those w=
ho are doing it the right way.<div><br></div><div>As for the effectiveness =
of QRP on digital modes, back in the late 80s I ran AMTOR using a PK232, an=
IBM PC Portable, Heath SB line and a three element tribander. On an =
AMTOR QSO on 20 meters with an Australian station, we kept dialing back our=
power levels to see the minimum required to maintain a solid link with no =
re-sends of data. Got down to about a quarter of a watt to the antenn=
as, tribanders on both ends of the link.</div><div><br></div><div>Chris, AJ=
1G Stonington CT<br><div><br><div dir=3D"ltr">Sent from my iPhone</div><div=
dir=3D"ltr"><br><blockquote type=3D"cite">On Mar 3, 2020, at 07:54, Bill W=
alsh [email protected] [FT100] <[email protected]> wrote:<br><b=
r></blockquote></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF
=20
<span> </span>
<div id=3D"ygrp-text">
=20=20=20=20=20=20
=20=20=20=20=20=20
<p>
=20=20
=20=20
</p><div class=3D"moz-cite-prefix">On 3/2/20 6:13 PM, John Geiger W5TD
wrote:<br>
</div>
<blockquote type=3D"cite" cite=3D"mid:CAHC1P28jxxbS57FhFuCJ7ePqZ=3D6ceY=
[email protected]">
<pre class=3D"moz-quote-pre" wrap>The manual for the LDG YT-100 tuner=
says it is rated at 100 watts for the
digital modes. Has anyone used it at that power level? Most other LDG
tuners have the power seriously derated for digital modes, like 33% of
their regular power level.
I would love it if it did work at 100 watts but don't want to blow it up
either.
73 John W5TD</pre>
</blockquote>
<font size=3D"+2"><font face=3D"FreeSans">I don't know why you would
need such power levels, unless your trying to reach Mars or
something.<br>
<br>
I was just trying my hand at some digital so I turned down the
power to just a couple watts. As low as the transmitter would
go. A few days later I got an automated reply e-mail from some
station in Indiana. From central Oklahoma to Indiana on a couple
watts!<br>
</font></font><br>
<pre class=3D"moz-signature" cols=3D"72">--=20
"The dog is a gentleman. I hope to go to his heaven, not man's."
Mark Twain
</pre>
=20=20
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