[Elecraft] (no subject)
Don Wilhelm
[email protected]
Wed Apr 9 14:42:00 2003
John,
I don't know which of the several "Don" on this reflector you were referring
to, but I will try a response.
First - what is the behavior if you feed a 50 ohm dummy load? The base K2
(and most other transmitters too) need a 50 ohm resistive load to work
properly. If all is normal into a dummy load the K2 is working just fine.
You can adjust your antenna to produce a 50 ohm feedpoint or use an antenna
tuner at the shack end (or both).
The final transistors are quite robust and the K2 will likely not harm
itself working into a high SWR - it just won't put out spec'ed power unless
the load is 50 ohms resistive.
73,
Don W3FPR
----- Original Message -----
my k2 works as advertised on all bands cept on 20m only when i try to
transmit on cw(no options added) on the lower part of 20m from 14.0-14.200 i
only get bout 3 bars on the smeter to light even when i have power all the
way up to 15 watts. If i change the display to show voltage and current i
get bout .28 on recieve to 3.45 on transmit and occasionally it shows the
Hi Current message also if i hold the tune button and adjust the power knob
it maxes at 5watts. if i move to the high end of 20 meters around 14.300
lets say i can get bout 7-8 bars on the smeter to light when i transmit and
no hi current messages, and on the display the current doesnt goe up so
high on transmit.. this is bad right? I have made contacts on 20 meters
with good rst reports on the low end where i have these problems. usually
i use the antennas at our club house or on the ship which have been checked
for good swr but i did make me a dipole antena for 20meters without checking
swr (dont have
one)im afraid i may have done what they call burn the finals. Don if you
read this please let me know what you think I may bring it by if you think
this is a serious problem.