[MRCA] BC-1000

[Mkdorney]

How often and how long do you plan to operate the radio at any one time?  There was a vehicle power supply made for the BC 1000 - the PP-114. Might be your better bet.  But you won’t be mobile unless you mount everything in a vehicle. 

Mark
WW2RDO

Sent from my iPhone

> On Feb 1, 2019, at 6:55 PM, jeepp <jeepp at comcast.net> wrote:
> 
> Well rats!  Robert is correct... Time takes a toll......  103.5v of course
> K3HVG
> 
> 
> 
> Sent from my Verizon 4G LTE smartphone
> 
> 
> -------- Original message --------
> From: Robert Downs via MRCA <mrca at mailman.qth.net> 
> Date: 2/1/19 16:05 (GMT-05:00) 
> To: mrca at mailman.qth.net 
> Subject: Re: [MRCA] BC-1000 
> 
> Minor correction:  The BA-38 used in BC-611, BC-721 and SCR-625 output 103.5 VDC when new, not 90, although 90 VDC will run the radio OK.  But a carbon-zinc 90 volt battery isn’t fully discharged until 45 VDC.  And most radios quit working at about 60 VDC. 
> 
>  
> 
> AFAIK, the final manufacturer of the BA-38 was Brentronics.  And the final order for them was placed on 04 OCTOBER 1993 by me.
> 
>  
> 
> Robert Downs
> 
>  
> 
> From: mrca-bounces at mailman.qth.net [mailto:mrca-bounces at mailman.qth.net] On Behalf Of jeepp
> Sent: Friday, February 1, 2019 12:21
> To: W9RAN at oneradio.net; mrca at mailman.qth.net
> Subject: Re: [MRCA] BC-1000
> 
>  
> 
> FWIW, Burgess made the XX-69 90 volt battery for the BC-611 well into the 1960s.  The above, and the likes of the multi-tap batteries for the BC-620 and BC-659 are enigmatic, to say the east.
> 
> K3HVG
> 
>  
> 
>  
> 
>  
> 
> Sent from my Verizon 4G LTE smartphone
> 
> 
> 
> -------- Original message --------
> From: Robert Nickels <ranickel at comcast.net> 
> Date: 2/1/19 12:05 (GMT-05:00) 
> To: mrca at mailman.qth.net 
> Subject: Re: [MRCA] BC-1000 
> 
> On 2/1/2019 9:58 AM, michael tyler via MRCA wrote:
> > Once upon a time you could buy 90 volt batteries intended for a camping light that K-Mart use to sell....any thoughts?
> 
> You're probably remembering the Burgess Safari Lite that was made here 
> in Freeport IL:
> 
> http://www.flashlightmuseum.com/burgess-flashlight-165-2-safari-lite-fluoresent-lantern-burgess-green-label-2-69v-646-or-246-1961
> 
> Burgess Battery was a leading manufacture of carbon-zinc batteries for 
> decades, having been started by Dr. C. F. Burgess after he consulted 
> with Northern Battery Co. which was the forerunner of today's 
> Ray-O-Vac.    But after his death the company lived off of carbon-zinc 
> technology (including the batteries used in BC-611 and many other 
> military radios) and failed to invest in alkaline technology and went 
> out of business. Environmental contamination put the old factory 
> property on the EPA's superfund list, and the last owner, Clevite Corp, 
> contributed to the remediation about 20 years ago.  Today the site is a 
> bike and water trail head that I use often.   I toured the old factory 
> before it was torn down and believe me, it was not a place  that would 
> have been fun to work in.
> 
> So unless you make your own, batteries are not an option anymore, and 
> DC-DC converters operating from a low-voltage DC supply are the best 
> choice for radios as well as the two 69-volt dry batteries originally 
> used in the Safari Lite.
> 
> 73, Bob W9RAN
> 
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