[TenTec] Magnetic circuit breaker

[Mike Hyder -N4NT-]

If your trusty Astron has overcurrent protection, it is in the form of a
fuse -- not adequate.  If you can find a Ten-Tec supply to use you will
really be better off but the magnetic circuit breaker is adequate.  YES your
Pegasus ought have the circuit breaker, too.

While talking about the Astron supplies, ordinarily they did not have the
negative post grounded to the chassis.  Voltage spikes could enter that
negative post, as when one is powering a radio which is not grounded to the
same point as the cabinet of the Astron.  In addition, RF energy could enter
that negative post and affect the regulation of the supply.  The fix is easy
and simple.  Remove the insulators from around the negative post, clean a
bit of paint off the inside of the cabinet around the hole and remount the
negative post without the associated insulators but with lockwashers to
ensure a good electrical connection to the cabinet.

Good luck,
Mike N4NT@chartertn.net

----- Original Message -----
From: "Mark Erbaugh" <mark@microenh.com>
To: <tentec@contesting.com>
Sent: Saturday, May 12, 2001 7:14 AM
Subject: [TenTec] Magnetic circuit breaker
>
> Hi,
>
> I just picked up a used Omni V.  I am planning on powering it from my
trusty
> Astron RS20 power supply.  I notice in the manual, it mentions that TenTec
> power supplies have built in over current protection. I'm sure the Astron
> does also, but I get the idea that the TT is better and is considered part
> of the protection for the radio against excessive final current with a
> mismatched antenna. The manual also mentions a 'magnet circuit breaker'
> option for use with not TT supplies. Are these still available from TT?
> Should I get one to supplement the over current protection in the Astron?
Is
> it possible to just get the magnetic circuit breaker from a 3rd party
> source?
>
> Should I also consider a magnetic circuit breaker for the power cable for
my
> Pegasus?
>
> 73,
> Mark



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