[ARC5] Fw: Power Supplies for the ARC-5 Rx.

[Henry Mei'l's]

----- Original Message ----- 
From: "Henry Mei'l's" <meils at get2net.dk>
To: "Dennis Monticelli" <dennis.monticelli at gmail.com>
Sent: Saturday, January 29, 2011 7:47 AM
Subject: Re: [ARC5] Power Supplies for the ARC-5 Rx.


> Hello Dennis, et al -
>
> Why not add a voltage multiplier to the LV filament supply as source
> for your 60-70V ?
>
> Henry, oz1uf  n2nr
>
> ----- Original Message ----- 
> From: "Dennis Monticelli" <dennis.monticelli at gmail.com>
> To: "Jess Lewis" <kr4oj at bellsouth.net>
> Cc: <arc5 at mailman.qth.net>
> Sent: Saturday, January 29, 2011 6:13 AM
> Subject: Re: [ARC5] Power Supplies for the ARC-5 Rx.
>
>
>> Hi Jess,
>>
>> I share your affection.
>>
>> Why not just use a stack of 9V batteries for B+?  Putting more than about
>> 70V on the receiver does not improve performance much and the caps will
>> thank you for it.  You can power the filaments off any convenient LV 
>> power
>> supply.  This is usually the way I power them.
>>
>> On Fri, Jan 28, 2011 at 10:56 AM, Jess Lewis <kr4oj at bellsouth.net> wrote:
>>
>>> ?Hello,
>>> I just joined this list. I have several old ARC-5 Receivers (various 
>>> freqs)
>>> and a couple of the transmitters. Most from E-Bay, in the past year or 
>>> so. 2
>>> of each are "un-hacked" :o)) and I also have a couple of the Dynamotors 
>>> for
>>> the receivers.
>>>
>>> I have loved the old units, since I first became aware of them, from CQ
>>> magazine, back in the 50's. Got my ham license in 1965, and always meant 
>>> to
>>> convert a few & get on the air. But, alas, I found a deal on some used
>>> Heathkit stuff, went that way, and never got back to the ARC5s except a
>>> Q5'er, using the BC453 & a converter (not really a "Q5er", but a pretty 
>>> good
>>> rx for 40 meters.)
>>>
>>> I would like to try and put some of the stuff on the air, without 
>>> hacking
>>> up the unit, anymore than I have to, mainly for cosmetic and nostalgia
>>> purposes. I know that several , probably most of the caps, will need
>>> replacing, and Ken Gordon (W7EKB), sent me some good ideas about opening
>>> various potted units, replacing the internal caps, then re-potting.
>>>
>>> My ACTUAL question (and reason for posting) is about power supplies for 
>>> the
>>> receivers. Recently, I saw on E-Bay, several neat little power supplies,
>>> built on the original Dynamotor frames, and would plug into the original
>>> Dynamotor socket. Several have sold already, actually for an 
>>> unbelievable
>>> price :^)).
>>> I understand that the original power supply units were built and offered
>>> for sale, by Fair Radio Sales, in Lima, Ohio.  They, of course, no 
>>> longer
>>> have any. Does anyone know of a possible source for these PS units? 
>>> Even a
>>> source for the transformer?  I have the dynamotor base and most of the 
>>> parts
>>> to fab one up, if I could only find the transformer.
>>> Any help or suggestions are welcome.
>>>
>>> Thanks for listening.
>>> 73,
>>> Jess  KR4OJ
>>>
>