I forgot to tie this in with amps.and signal quality. You can tell a new
ham how to tune that Tetrode, or high gain amp, but not knowing, or
caring they discover they can tune a Tetrode just like a Triode GG amp
for max output with very little difference in output power with no
knowledge of what happens to the signal quality .
The same is true for those rigs that have the output controlled by
ALC.that hit the amp with a full power spike. It's not elegant, but a 3
db pad between the rig and amp will likely cure the problem.
I've chased DX while listening very close to very station stations
running POWER, but their signal was clean. OTOH, those stations are
outnumbered by those pushing amps of all types beyond their ratings.
Some even make their signals (different is a polite way of saying it) so
they'll be noticed.
As to CW and digital. Digital is not the new CW. CW is the most basic
form of communication. It is the easiest mode to construct an an
emergency transmitter out of a few parts.
CW at any speed is like passing another test and something to be proud
of. Doing it at 20 WPM sets that person's abilities apart from those
who don't. It's not putting the one down who didn't learn the code, but
it does set them apart.
73, Roger (K8RI)
On 4/26/2017 6:43 PM, Roger (K8RI) wrote:
That too, but many of the obnoxious are old timers.
Being taught proper / acceptable social behavior and passing a test on
it will never reform those who don't care.
73, Roger (K8RI)
On 4/26/2017 4:36 AM, Charles H wrote:
I vote for more questions about proper on air operations, when to
call, etc., and ham law stuff. Get the appliance op to where he is
bearable on air.
Charly
------------------------------------------------------------------------
*From:* Amps <amps-bounces@contesting.com> on behalf of Roger (K8RI)
<k8ri@rogerhalstead.com>
*Sent:* Wednesday, April 26, 2017 8:28 AM
*To:* amps@contesting.com
*Subject:* Re: [Amps] Price per Watt Conversation
Unfortunately, the exams are going the other way with very little
required in the was of technology ans theory. They have dumbed down the
exams to where, I think my Novice test had more theory than any of the
present exams. Now the ARRL thinks we need an even easier, entrance
level class. Well, the East and West coasts are liberal havens.
We don't need an easier class! As Manfred said, we need one that
requires some technical knowledge. Ain't gonna happen in today's social
climate.
As for ALC, I only know of one manufacturer that has the output power
controlled by ALC with the overshoot.
My transceiver runs 200 out and backed off to drive a high gain tetrode
has no overshoot. I've received a lot of compliments on the signal
quality.
Referring to the clean commercial rigs and the ham rigs that let the
user tailor the signal into pure trash. There seems to be a number of
hams that like to add 100 Hz on the bottom of the audio for a more
"natural" sound, then complain when calling stations are off their
frequency by 100 Hz. I ran an experiment with one such station with him
randomly adding and removing the 100 Hz. Even then, he couldn't
understand why I was moving 100 Hz with each change and this was an old
timer.
I like to look inside, but touch nothing. Many of today's rigs require
some sophisticated equipment to properly align. They even require a set
sequence for setting up the audio, that if not followed in order, can
leave the transmitted signal really bad. The companies didn't do ham
radio any favors by making so many parameters accessible to the user!
I've worked with digital for years and know enough that I realize, there
is no way I can repair one of the top end rigs with the possible
exception of the displays, or possibly final module.
73
Roger (K8RI)
On 4/25/2017 4:37 PM, Manfred Mornhinweg wrote:
>
> Some hams go another step further, take the cover off their radios and
> defeat the ALC. That goes a good way toward deflecting the needles
> even further. And toward splattering all over the band and then some,
> of course.
>
> Hams should be asked to pass a test, both about technical knowledge
> and mental sanity, before being allowed to operate radios that have
> external controls for mic gain and compression level. Those who
> haven't passed that test should only operate radios that don't have
> these controls, and only operate them with the stock mikes. And the
> covers of their radios should be welded shut, just in case! :-)
>
>
> Joe,
>
> just a small correction:
>
> > The PA must be over driven in order to produce any ALC!
>
> That depends on how it's implemented. An ALC that requires overdriving
> is a badly designed ALC. In solid state transceivers the ALC signal is
> usually derived from a comparator that starts giving an output when
> either the power output reaches a certain level, or the reflected
> power does so. If this comparator is properly adjusted so that it
> starts giving an output a little before the PA is overdriven, then the
> ALC prevents overdriving. Of course if a monkey with a screwdriver
> fiddles with that internal adjustment and sets it above the overload
> level, the ALC can no longer do its job of preventing overdrive.
---
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