The peak of a 100%-modulated AM signal is twice the amplitude of the
unmodulated carrier, or 4 times the power. So the keep the peak power
below 500W, the carrier power should be no more than 500/4 = 125 watts.
You might need to keep it somewhat below that if you make long
transmissions.
Mike,
You can use the KPA500 on AM at the full 500 watt rating.
BUT remember that the power is Peak to Peak.
So you will not get 500 watts of carrier and a total of 500 watts of
sideband energy. You will get 250 watts of carrier and 125 watts of
sideband energy in each sideband - for a total
I am new to the List. Just acquired a K2 am learning a whole lot! I would
like to
install the DSP Option in it because I am primarily a SSB operator. If
anyone has one to sell, please let me know. Shortly I'll be putting an
order in to Elecraft to be
able to purchase updates, mods, and options
No reason why not. If it were me, I’d keep the unmodulated carrier out to
around 90-100 W to allow for some headroom. There’s no reason to push it past
that.
Grant NQ5T
K3 #2091 KX3 #8342
> On Feb 27, 2019, at 9:20 PM, Mike Lichtman via Elecraft
> wrote:
>
> I know the KPA 500 is designed
I know the KPA 500 is designed for SSB and CW, but I have always wondered if
you can use a KPA500 on AM and, if so, what would be the maximum wattage you
should use? The manual
doesn’t say anything about it. 73 Mike KF6KXG
__
Elecraft
Ignacy and All,
Everything Jim says is true, but still, the K2 can be a very good
contest transceiver.
The K2 is indeed a viable contest station, either portable or home
station - especially for CW, but a bit less so for SSB for the reasons
that Jim stated. VOX is not going to work well,
Hi Mike,
This will be fixed in the next release. For now the setting is fixed at either
500 ms or 1 second per update. This applies to the audio voltmeter/dBV
voltmeter functions of the DISPLAY switch.
73,
Wayne
N6KR
> On Feb 27, 2019, at 3:02 PM, K4PI wrote:
>
> I asked this before but
I asked this before but could never get an answer. At one time I used
the setting in CONFIG AFV TIM but I cannot get it to work anymore. It
just has two - - in the window. I am in TECH MD and have latest
updates. It quit working some time back and apparently one of the
upgrades killed
Thanks all for your perspectives and the info on the audio chain is very
informative and hadn’t really thought of that one. Simplistically I thought the
audio on all three would be similar but now I know.
I have a K2/100 I built and maybe like all K2 owners have a fondness for it and
would
Thanks for the multiple responses. Both the K-pod and the K3/0 mini have
been sold
Ron Genovesi
n3...@coastside.net
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Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
I've just finished building up a superb amplifier kit from Victor and Yana
at eb104.ru that uses phase-change cooling. It will output 750 clean SSB
watts with 4.5 watts of drive once I replaced the 10-dB attenuator pad with
a 4-dB pi pad, namely a shunt 220, a series 24, and a shunt 220. The
Thanks to those who contacted me. Nobody seems to have a Rev B Schematic!
The possibility of an exchange unit has not materialised so as the KPA3 is
still mine, I decided a bit of disassembly was in order before taking it to be
serviced.
Findings upon removal for testing:
C43 and C44 passed
On 2/27/2019 5:33 AM, Ignacy wrote:
K3 has an excellent speech processor with equalization. K2 has compressor
and sounds OK but not dramatic with good microphone. IMHO KX3 processor is
not too efficient and even below K2. But KX3 has an equalizer allowing any
mic to sound good.
Yes. The K2 is
Grant et al;
I can agree that many hams do not understand the application of
"filters" in a radio, specially today with the advancements in DSP
technology. I find today that many many hams rely on "old school
methodology" to justify what they do. They, for the most part, seem to
shy away
Just an opine. Since these are ROOFING filters, and not the means of
determining the radio’s ultimate selectivity, you may not notice a substantial
performance improvement of the radio with 8-pole vs 6-pole filters.
I have my flame suit on, just in case — (it can be almost guaranteed to be
To put a wrapper on this thread: I ended up ordering two 400Hz filter direct
from Inrad. They had them clearly marked as eight pole and said they were
mount-compatible with the K3. I had email exchanges with K3 support, most of
which were helpful, but the question about a KFL3C-400
The challenge in the phone contest at 100W with compromise antennas is being
heard. This depend on the quality of speech processor and microphone or
equalization. The difference between excellent and not so speech processor
can easily be 1-2S.
K3 has an excellent speech processor with
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