Those are nice circuit breakers but the instant trip magnetic part was only
activated by major overloads. The other part was a thermal trip with the
usual time lag
We used them on conveyor controls we designed and built for use in a GM
plant
I have a large surplus of 2 pole, 250vac, 20 amp units I have been
practically giving away for postage. Work nice for the linear amp power
supply
Paul K0UYA
--------------------------------------------------
From: "Joel Hallas" <jrhallas@optonline.net>
Sent: Wednesday, August 28, 2013 1:55 PM
To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
Subject: Re: [TenTec] Using Non-TT Supply
For those early radios, TT offered an "AirPax" fast acting magnetic
circuit
breaker for mobile users or others who didn't use the TT current limited
supply. These are available from the usual vendors, although they now seem
to have become part of Sensata Technologies.
Regards, Joel Hallas, W1ZR
Westport, CT
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Rick -
DJ0IP / NJ0IP
Sent: Wednesday, August 28, 2013 1:26 PM
To: 'Discussion of Ten-Tec Equipment'
Subject: Re: [TenTec] Using Non-TT Supply
I have a hunch your assumption is correct, Paul.
73
Rick, DJ0IP
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Paul
Kraemer
Sent: Wednesday, August 28, 2013 4:32 PM
To: 'Discussion of Ten-Tec Equipment'
Subject: Re: [TenTec] Using Non-TT Supply
If that is an issue then use the VS-35M model with front panel adjustable
current limit that can be set from 1.5 amp up to max of the supply. The
voltage is also adjustable from front panel.
I haven't taken each apart but I wager the only difference between the
VS-35M and the RS-35M is the adjustments brought out to a knob Paul K0UYA
--------------------------------------------------
From: "Rick - DJ0IP / NJ0IP" <Rick@DJ0IP.de>
Sent: Tuesday, August 27, 2013 11:28 PM
To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
Subject: Re: [TenTec] Using Non-TT Supply
Paul,
The over current protection in your RSM 35 is not the same as the over
current protection used in the Ten-Tec power supplies. The RSM 35's
over current protection is to protect the power supply itself. The
Ten-Tec power supplies had their over current protection set to
exactly the maximum permissible current for the transceiver's finals,
and that helped protect the final transistors. Ten-Tec used this
method for almost 20 years. I think the Omni VI was the first
transceiver which did not rely on the power supply for the extra
protection.
There is nothing special about the Ten-Tec circuit, other than the
point at which it shuts down. Older models ceased at 18A, later ones
at 20A (as the
new transceivers required more current). Any good power supply with an
adjustable current parameter would also work like the Ten-Tec power
supplies. However how often do you see someone using a P.S. with an
adjustable current limit?
Bottom line, your suggestion is only good for the newer transceivers.
Don't
use it with the older Omni's or Corsairs.
73
Rick, DJ0IP
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Paul
Kraemer
Sent: Tuesday, August 27, 2013 11:46 PM
To: tentec@contesting.com
Subject: Re: [TenTec] Using Non-TT Supply
John
I use Astron RSM 35 with all my solid state radios including OMNI VI
Very good supply with overvoltage and over current protection Paul
--------------------------------------------------
From: "John Farler" <k4avx1@windstream.net>
Sent: Tuesday, August 27, 2013 3:21 PM
To: <tentec@contesting.com>
Subject: [TenTec] Using Non-TT Supply
My supply for the TT Omni V or VI has problems. When I tune up, even
to a dummy load, the pilots in the radio dim and output is not where
it should be on 40 meters and up.
Current is less than 20 A, but I haven't checked the voltage drop yet.
My question is can I use a non-TT supply with the Omni VI safely? I
remember someone on the list saying TT stopped using the original
type of power supply like the one with the old Triton which kicks of
at a certain current, but I can't remember which radio it is that
doesn't depend on the "circuit breaker" type of protection.
I have several non-TT supplies that will provide the current and more
- is it safe to use them with the Omni V, VI??
I'm guessing the filters in the power supply have gone bad...actually
it has 3 in parallel.
How can I check for one bad one, or can I?
Thanks, and I hope my post is not too confusing....
John, K4AVX
k4avx1@windstream.net
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