[MRCA] BC-611 PS

[Mkdorney]

I have two “C” model BC-611s that use that adapter. Ther is some noise, but not a lot. Works well for what I’m doing with the Handie Talkies. 

Mark D. 
WW2RDO

“In matters of style, float with the current. In matters of Principle, stand like a rock. “.   -   Thomas Jefferson 

Sent from my iPhone

> On Dec 16, 2019, at 12:33 PM, B. Smith <smithab11 at comcast.net> wrote:
> 
> I've worked on several radios that have had the power supply installed. Evidently the power supply was made in several different versions with improvements on the later versions. You may experience a very slight amount of inverter noise. For a while the inverter contacts did not seem to fit the bottom door contacts on certain models but that seems to have been corrected. Take a peak as you close the door to make sure all contacts are being made as you may have to make adjustments.
> Recently I measured voltages under actual transmitter and receiving conditions with fresh batteries and the transmitter  loaded for maximum output. (Use Field Strength Meter)
> 110 VDC on receive.
> 97 VDC when transmitting (with fresh batteries)
> 
> Current draw on the 3 D cells in series powering the high voltage Inverter:
> Receive 250 mills
> Transmit 510 mills with fresh batteries and transmitter loaded properly.
> 
> Turn on: The inverter starts up by sensing filament current draw when the antenna is extended on the BC-611. Turns off when the antenna has been retracted. I assume a line sense relay is installed for this purpose.
> 
> Heating: Ioperated the unit continuously on receive for 5 minutes and 1 minute on transmit then removed the inverter  but could not feel any heat on the inverter case.
> 
> CAUTION: Do not test without a proper load. Be careful when extracting the unit from the case as I don't think any bleeder resistors were installed on all the models but this may have been corrected. Handle with care - - keep away from the power supply contacts after removing from the radio or discharge with a resistor load.
> WANTED: Someone to go to Cape May  with a BC-611  and establish a over water contact to Ft. Miles.
> Z
> 
> 
>> On 12/15/2019 11:08 PM, Gene Smar via MRCA wrote:
>> Gents:
>> 
>>      I am awaiting delivery of a BC-611F that I just purchased on e-Pay.
>> The purchase includes what I found out is a 4 D-cell power supply for both A
>> and B batts.  Here's a link to a photo:   https://tinyurl.com/rre5zk7 .  Has
>> anyone of you used this?  Or are you at least familiar with its operation?
>> I may be able to put the new (to me) -611 on-air within minutes of its
>> arrival next week.  I stupidly sold my first -611  (
>> http://www.mrca.ar88.net/photo_gallery/2003_meet_pix/Meet_pix_03.html and
>> scroll down)   a few years ago at Gilbert and have regretted that decision
>> ever since.
>> 
>>      Thanks for any G2 youse can provide.  And Happy Holidays to all.
>> 
>> 73 de
>> Gene Smar  AD3F
>> 
>> 
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> 
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