[Amps] Vendor For Transformer Rewind

[Joe Subich, W4TV]

 > Is there anywhere in the US that still  has  120/240 volt power?

Most residential in the US is 120/240 - even 123/246 as utilities
push the limits to minimize transmission losses.

Just for fun, I just checked my line voltage.  Here in a semi-rural
area on Saturday morning with no particularly heavy load conditions
(neither heat nor A/C), I'm seeing 122.5/245 V.  If I were rewinding,
I would consider 208/220/230/245 and maybe 260 (or 208/220/235/250)
as I expect the overvoltage to continue to worsen.

The increasing number of devices with switching supplies will not
be impacted by 20% overvoltage, but tubes, etc. don't like even 10%
overvoltage if you're looking to get maximum filament life.

73,

   ... Joe, W4TV


On 2015-01-24 11:44 AM, Martin A Flynn wrote:
> Vic
> 240 is the original operating voltage.   Considering the cost of the
> tube, I don't want to starve the filaments by operating at the lower
> voltage.
>
> Is there anywhere in the US that still  has  120/240 volt power?
>
> 73,  Martin
> W2RWJ
>
> On 1/24/2015 11:31 AM, Vic Rosenthal wrote:
>> But he should have them add a tap for 240, too.
>>
>> Vic K2VCO /4X6GP
>>
>>> On Jan 24, 2015, at 5:56 PM, Jim W7RY <w7ry at centurytel.net> wrote:
>>>
>>> Agreed!
>>> 73
>>> Jim W7RY
>>>
>>>
>>> -----Original Message----- From: Paul Kraemer Sent: Saturday, January
>>> 24, 2015 7:06 AM To: maflynn at theflynn.org ; amps at contesting.com
>>> Subject: Re: [Amps] Vendor For Transformer Rewind
>>> Martin
>>> My vote goes hands down to the folks at Heyboer
>>> Paul K0UYA
>>>
>>> -----Original Message----- From: Martin A Flynn Sent: Saturday,
>>> January 24, 2015 8:51 AM To: amps at contesting.com Subject: [Amps]
>>> Vendor For Transformer Rewind
>>> A while back I had picked up a Henry 3002A amplifier with a shorted
>>> transformer.   I am interested in locating a vendor to re-wind the
>>> original (or supply a replacement) that will not require butchering
>>> the chassis, along with adding taps on the primary for 208 and 220
>>> (club station is 208, house is 220)
>>>
>>> 73 W2RWJ
>>> Martin
>>>
>
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