Re: KPA500 Interface with Kenwood TS-590
Posted by
Dave Johnson on
Jun 11, 2012; 1:13pm
URL: http://elecraft.85.s1.nabble.com/KPA500-Interface-with-Kenwood-TS-590-tp7557428p7557473.html
Doug, you need an oscilloscope and ideally trigger it from the key
line. For an example of the sort of problems some radios have see:
http://www.astromag.co.uk/ft857d/Connect the radio to a dummy load (no amplifier needed), set the radio
for a drive level in the 10 - 30 Watt region and send a single "dit"
on the key. Even without a storage 'scope you can repeat the dit and
see if the envelope is clean or not. While the KPA500 may show the
spike as a momentary peak on the bar graph, even my LP-100 power meter
isn't anywhere near as good as a 100 MHz 'scope at seeing what is
really going on.
It is not always the leading edge of a CW character that causes
problems, the FT857D created spikes during SSB speech too.
I have not tried a TS590, my TS480SAT is clean as is my K3.
73 Dave, G4AON
>I'm not sure how to observe the
>spiking you mentioned
______________________________________________________________
Elecraft mailing list
Home:
http://mailman.qth.net/mailman/listinfo/elecraftHelp:
http://mailman.qth.net/mmfaq.htmPost: mailto:
[hidden email]
This list hosted by:
http://www.qsl.netPlease help support this email list:
http://www.qsl.net/donate.html