Yes, that man need an r but you better help the man with his K2 problems instead of spilling your energy in detecting typo
mistakes.
73,
Johan - on4aeb
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I have just completed the Power Calibration (R26 andf R27) on my KPA100. The
SWR shows 1.0-1 on 40 and 80M, but then goes up from there. It is 1.5-1 on 10m
and power output as indicated on my external power meter shows power declining
as the SWR is increasing. I am using an MJF 264 dummy
Jonathan,
Those indications may be indeed correct. To properly answer the question,
check your dummy load with an antenna analyzer first.
73,
Don W3FPR
-Original Message-
I have just completed the Power Calibration (R26 andf R27) on my
KPA100. The SWR shows 1.0-1 on 40 and 80M,
Hallo Jonathan,
I have done the calibration last weekend and I am getting a SWR of 1.0-1 on all
bands. I have used the
build in dummy load of my MFJ 949E antenna tuner. I would blame the dummy load
too.
You can maybe carefully use a tuned antenna at low power levels just to verify?
Regards
It's possible that those indications are accurate and related, but not
necessarily so. Most wattmeters show total forward (including reflected)
power, so if the reflected power goes up as the incident power goes
down, the total remains the same. If your external wattmeter shows
actual
That's right, Alan. You can safely connect an external power supply with the
internal batteries installed. The KX1 will draw power from whichever has the
higher voltage, the internal battery or the external power supply.
Of course, that will be the external supply normally, unless you are using
Hello everyone.
Awhile back there was some mail about the AGC Mod on the K2.
Specifically, adjusting R1 on the Control board.
My K2 had a fixed resistor so I replaced it with a 20 turn
50k one. I also followed the write up about how to adjust it
for apparent equal noise with AGC ON/OFF.
Worked
Fernanco, N2FQ wrote:
Awhile back there was some mail about the AGC Mod on the K2. Specifically,
adjusting R1 on the Control board.
My K2 had a fixed resistor so I replaced it with a 20 turn
50k one. I also followed the write up about how to adjust it for apparent
equal noise with AGC ON/OFF.
If your external battery voltage goes below the internal battery
voltage, the internal batteries will start draining.
i left my KX1 on for a few days and after i ran down the external battery the
internal batteries took over and became totally discharged.
These were the expensive Lithium AA
Fernando,
Yes, I would say that 3.37 volts is a bit too low, and yes it will make a
difference in how the RF Gain responds - both the RF Gain control and the
AGC adjustment pot are in the same resistive network (no active devices
involved) - it is a 2 legged resistor network with the RF Gain in
Edward R. Breneiser wrote:
I finally have my Palm 105 controlling my Elecraft K2! Yes I now can
hold the tiny PDA in my hand and change bands, frequencies, and send
programmed massages such as CQ, Mycall, Exchange, His Call, TU and ?. I
can also log and dupe check with the PDA at the same time.
Ron, Don
thanks for the notes and explanation.
I went back and set the U2 Pin 5 back to 3.8, monitored
this voltage as I changed R1, did the AGC ON/OFF while I stepped
down the voltage until I couldn't hear
no difference at about 3.70vdc.
RF gain back to normal.
Much appreciated.
take care.
Just a thought on dummy loads, a number of years ago I noticed my Heath
Cantenna was giving me a slightly higher SWR reading instead of 1 to 1.
When I measured it with a VTVM I found it was 40 ohms, not the original 50
ohms when I built it 25 or so years ago. I posted this on the Heath users
Steve K4JPM wrote:
...a number of years ago I noticed my Heath Cantenna was giving me a
slightly higher SWR reading instead of 1 to 1. When I measured it with a
VTVM I found it was 40 ohms, not the original 50 ohms when I built it 25 or
so years ago. I posted this on the Heath users Email list
Jameco carries a variety of linear, regulated supplies in different
amperages and voltages. They look like wall warts but they are not,
provided you make sure you are ordering a linear regulated supply, and
not an unregulated swticher.
Here is the relevant catalog page off their website:
Ron,
here you remind me of one of my favorite demonstrations; hopefully some
of the rest will enjoy my reminiscing.
When dummy loads such as the Heath Cantenna first turned up in Hamshacks,
they were a luxury item intended to replace the standard dummy load of the
day: an incandescent light
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