[TenTec] Herc II vs Astron

[Rick - DJ0IP / NJ0IP]

Bob, you did not tell us what antenna matchbox you are using.

If it is a model 238, they you are correct, it should be OK.
BUT if it is a T-Network tuner, then it is easily possible to have a good
SWR, despite the tuner being tuned wrong, have excessive power loss within
the tuner AND cause funny things to happen outside: weak signal.

But the transceiver should be OK, regardless.

73
Rick, DJ0IP

-----Original Message-----
From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of bob barnes
Sent: Monday, March 04, 2013 9:01 PM
To: k9yc at arrl.net; Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Herc II vs Astron

did a check of my ameritron this am with the omni 6 running 50 watts and the
herk 2 at 500 watts out still not into fault and the needle not even hitting
the red yet on the amp meter of the p/s but i can go off resonance of the
antenna and all sorts of strange things happen!
 
now an antenna tuner can cause strange things too i always tune at
lowest swr dip of the meter and after that apply full power things will act
normally then.
 
 
bob

all things are possible in Christ Jesus our savior

--- On Mon, 3/4/13, Jim Brown <k9yc at audiosystemsgroup.com> wrote:


From: Jim Brown <k9yc at audiosystemsgroup.com>
Subject: Re: [TenTec] Herc II vs Astron
To: tentec at contesting.com
Date: Monday, March 4, 2013, 11:30 AM


On 3/4/2013 7:32 AM, John/K4WJ wrote:
> I believe source amperage goes up when the impedance of the load is 
> lower than the source.

Right.

LOSS in the line is determined by the match between the antenna and the
line.

My observation about a 70A Astron supply being insufficient is based on
presenting a matched load to my Herc II using a 229 or 238.  The Astron
would go into protect with keydown at full power.  Yes, I could have backed
off the power a bit, and the supply would have been happy.

73, Jim K9YC
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