Ken, they primaries would short if I remember
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On Monday, November 21, 2022, 7:58 AM, Ken Claerbout <kenk4zw@gmail.com> wrote:
"I tested all the bad 425 transformers and each one faulted the exact
same way. At least they were consistent."
Same here. I have two bad transformers from K3ZO's amps if anyone is
looking for a boat anchor or paper weight. Both had the same failure,
but I can't locate my notes to see what it was. I can dig it up if
anyone needs it.
73
Ken K4ZW
On Sun, Nov 20, 2022 at 9:33 PM gudguyham--- via Amps
<amps@contesting.com> wrote:
>
> Rob, the TenTec 425 also had trouble with shorted transformers. I must have
> replaced at least 4 transformers in the 425 power supplies. If the customer
> was a SSB and casual CW kind of guy I would retrofit an Ameritron AL800h
> transformer in it. That transformer cost $249.00 at the time. Worked great!
> One guy insisted on a Peter Dahl replacement , cost him $800 smackers. I
> tested all the bad 425 transformers and each one faulted the exact same way.
> At least they were consistent.
>
>
> Sent from the all new AOL app for iOS
>
>
> On Sunday, November 20, 2022, 9:07 PM, Rob Atkinson <ranchorobbo@gmail.com>
> wrote:
>
> The reason Hammond is the only source is that they purchased the PW
> Dahl plans for ham transformers from Jeff K8CQ. He bought the IP from
> Dahl, not the rest of the business when Peter went SK. For a time
> Jeff took orders and had MagCap in Boston actually make and ship the
> iron. But after a few years of that he sold the Dahl IP to Hammond.
> That's where we are today.
>
> The old Ten Tec in Tennessee had a similar problem with the
> transformer in their Centurion 3-500 amp. They were making their own
> transformers in house. The windings would short out and I think they
> knew about it but refused to admit any defectiveness to customers. I
> had one of those amps and went through two of their transformers
> before I ordered the Dahl equivalent and never had a problem after
> that.
>
> Rob
> K5UJ
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