Having hammed from college dorms to homes on acre lots (no rhombics in my
past), I have settled on either an off-center fed 80 meter wire or an open-wire
center fed 80 meter wire as the best compromise for an all-band antenna. My
LDG-1000 tunes the latter just fine.
I use a home-made
Using a Balun after the tuner with 50 Ohm coax between is NOT the best way.
Sure you can make it work, but the resultant SWR may not be the
best. Inconsistencies will/may occur...YMMV
Too many papers on this subject have been written over the years to quote
here on this very subject and I suspect
Oh, and I forgot...the 'Fault' which was the original subject matter before
it morphed into the current postings lay not in the tuner or the amplifier,
but rather another 'item' used in the system...I believe he has it all fixed
and is busily working DX...:-)
73's
Gary
On 16 May 2011 21:16,
Well, I found a solution to the problem. I had been using my old MFJ
manual tuner simply for its balun and antenna switch (tuning circuitry
bypassed). It appears at some point there was a failure in the metering
circuit. While trying things I noticed a burned resistor smell and when
I opened
The one piece of information that is left out of most discussions
about multiband antennas is the feedline length.
The feedline acts as an impedance transformer since it is not matched to
the antenna. Used in that way, the feedline type and length become an
important factor. That is why
Hi,
I don't have any experience with the LDG 1KW tuner, I assume this is
the 1000Pro. But, I have used several smaller LDG tuners and the newer
ones like the 200 PRO have a means of adjusting the SWR threshold so
that you can have the tuner stop trying when it gets low enough. I
looked at
Been enjoying KPA500 #32 for a couple of days now. Haven't yet made a
lot of QSOs with it, but the extra power on RTTY and to bust a couple
SSB pile-ups has been welcome.
However, the amp does not like my 40m setup. As soon as I transmit it
instantly goes into high reflected power fault and
Nels,
The K3 and your other rigs may be happy with it at 100 W, but at 500 W
it may be more critical. The present SWR level (actually, the
reflected power) could be just barely faulting the amp. Did you try
reducing the drive a bit?
Also: Is there any reason why the LDG tuner can't find a
On 5/15/2011 8:11 AM, Wayne Burdick wrote:
Did you try reducing the drive a bit?
I had a beta version here for test during a RTTY contest with orders to
run it with all the lights lit. It occasionally saw SWR on the order of
2:1 and faulted. I simply dropped the drive a dB or so and it purred
I tried lowering the drive to 1 watt (using the tune function) and that
still triggers the fault.
I suspect I'll only have the LDG tuner until the KAT500 comes out! It
more or less gets the job done but I think it could do better and I'm
not eager to got back to the manual tuner I have.
73
Sounds to like your LDG Tuner can't match the load...
73,
Tom
Amateur Radio Operator N5GE
On Sun, 15 May 2011 11:00:57 -0400, Nels Anderson n...@flightsim.com wrote:
Been enjoying KPA500 #32 for a couple of days now. Haven't yet made a
lot of QSOs with it, but the extra power on RTTY and to
Sounds similar to what my barefoot K2/100 was doing with an LDG tuner to
a multiband ladderline-fed doublet. It would tune up alright but as soon
as I started talking on 17m the tuner would go crazy. I replaced the
first few feet of feedline with dual coax, grounded the shields. That
moved the
If a tuner gets you to a good match at low power where there is a balun
involved, but you run into problems at high power, I would first suspect
that the balun is getting saturated. Using a balun between an antenna and
the tuner many times is not a good thing to do. Using a balanced line tuner
13 matches
Mail list logo
