Occasionally it seems my K3s doesn't know the STBY/OPER state of my
KPA500. I also have a KAT500 for my Carolina Windom.
Here's the first scenario: K3 in CW mode. I put the KPA in STBY and hit
TUNE on the KAT and on the K3. When the tune is complete, I send one
dash and note the 100W LED on th
I cannot operate FT8 on 80 60 40 30 or 12m. It works fine on the other
bands.
Data mode (usb) is selected on all. However, on the P3, the filter window
is displayed improperly on the bands that don't work -- it is centered on
the display and is actually LSB because I can ALT the mode and copy FT8 b
Tuning on my K3 stops at exactly 30.000MHz.
Chris Cox, N0UK
chr...@chris.org
> On Nov 13, 2020, at 8:08 AM, Chris Cox, N0UK wrote:
>
> Hi, Martin.
>
> Thank you - that is great to hear. I will give that a try and see. I didn’t
> realize that I could actually tune above 30MHz directly, alt
I would be concerned about reducing voltage for SSB and TX IMD. The NXP 1K50H
devices are only biased at 1 amp each which is a bit low for optimal IMD as it
is. SSB IMD could be improved by increasing bias to 2 amps per device. Since
the bias is only present during TX the waste heat increase wou
DLI does sell a rackmount PDU with 80-240 VAC capability and C-13/C-19
connectors, making it truly universal. I use several of them at my remote
sites. HOWEVER… You need to order it directly from the factory and request the
firmware version that has the *PWM turned off*. Otherwise it’s a pretty
The K4 Programmer's Reference is now at a point where we'd like to get
additional input. This document is intended for application developers, as well
as for K4 users who wish to create their own macros (strings of commands) for
assignment to switches on the radio itself or on a K-Pod.
We'll be
All:
I completed the builds of two Elecraft KX3 kits with all the bells and
whistles including 2m. I have run receive sensitivity tests using the XG3
and XG3 and XG50, and there are no appreciable differences on any of the
bands. However, the 2m Wx radio sensitivity differs by 1.5 S units between
Yes, I read the same. Lowering the PA voltage might be a bit difficult...
73, Roy K6XK
On 11/13/2020 8:27 AM, Howard Sherer wrote:
Reading the display on the KPA 1500 at various RF output levels shows an
efficiency as follows on 40M into a dummyload:
300W 23%
500W 27%
1000W 42%
1300
Reading the display on the KPA 1500 at various RF output levels shows an
efficiency as follows on 40M into a dummyload:
300W 23%
500W 27%
1000W 42%
1300W 48%
1500W 52%
1600W 54%
Have other owners seen results like this? Do you think a firmware and menu
item could be developed to increase
Hi, Martin.
Thank you - that is great to hear. I will give that a try and see. I didn’t
realize that I could actually tune above 30MHz directly, although I had not
even tried.
VY 73!
Chris Cox, N0UK
chr...@chris.org
> On Nov 13, 2020, at 3:02 AM, Martin wrote:
>
> Chris,
> i'm using a 2
Chris,
i'm using a 22MHz I/F for my 432MHz Transverter ( 102.5MHz *4 +
22=432MHz.) With the signal on 432, i transmit into a 13cm transverter
for QO-100. I didn't change anything on my K3 other than buying the
Transverter/RX-Antenna Board. So , no, it is not required to wideband
the K3.
OTOH,
The problem was that the supply voltage was slightly high, causing
increased gain in the preamp which allowed it to break into oscillation.
A 10 ohm resistor fixed it.
Thanks to those that responded!
73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
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