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 Post subject: RCA Victor BP10
PostPosted: Apr Wed 01, 2015 1:07 am 
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Joined: Jan Wed 18, 2012 5:40 pm
Posts: 123
Location: 0shawa,Ontario Canada
Well I couldn't resist this old 1940 RCA tube portable.Paid 40$ but am real happy with it.It came to life with just the 10mf electrolytic replaced but not much fidelity so I changed out the rest of them and it sounds great.What a fantastic result....such a sweet tube tone and performs really well ....I mean really well.Did alignment after recap it responded beautifully and I would go as far as to say it outperforms a LOT of my old six transistor stuff I've amassed over the years.Another unique advantage in having the loop in the lid is one can vary the loops plane from 90 degrees and pick out stations you wont hear on a regular built in ferrite ....a fantastic advantage for DXing in concert with the sharp null off the sides.I was so excited with this old brick I even took it in the car on my commute to work and the loop does better inside the vehicle than most transistor units with ferrite.I highly recommend grabbing one of these neat pieces of radio history.This was only the second one I have ever seen and had to have it.It is a Canadian version I believe made in Montreal.The back cover is rough inside and sadly the label info I want isn't there but I just can't express my excitement as I soldered those 8 nine volts together in order to see if it worked.The quality of the build is exceptional...IF cans with the brass adjustment rods ....the super chrome that you just don't see since well back in the day.Too bad there is not vernier tuning... it's 1-1 but I don't care.... it's like time stands still when you flip the lid open and near instant on glorious RF resonates so smoothly from this black and chrome brick.Has the 3 inch round speaker and the rod that holds the lid so probably mid production ....sorry for the long winded write up but when ya find one like this and it comes to life ya feel just like a kid again


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 Post subject: Re: RCA Victor BP10
PostPosted: Apr Thu 02, 2015 1:03 pm 
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Joined: Nov Tue 05, 2013 4:38 pm
Posts: 1256
Location: Windsor ,Ontario, Canada
Yup, i know what you mean. The first time i saw one, i had to have it and now i have 3. I have 2 with the regular lid and 1 with the extra support arm. Big problem with these is the back edge of the lid being cracked at the hinges.

Also a lot of times the leatherette is pretty rough. I got some adhesive backed replacement here, http://www.cameraleather.com/, it works great and looks fantastic.

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 Post subject: Re: RCA Victor BP10
PostPosted: Apr Thu 02, 2015 1:25 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 11285
Location: S. Dartmouth MA 02748-1225 USA
The "coat pocket radio" is a great collectible. Most brands work very well and are easy to restore. Be aware certain Emersons have a 6 volt "A" battery and it is difficult to stuff four cells where this 6 volt lives. Fortunately tubes are inexpensive, still, and FWIK none have the 1L6. There is a leather case that covers the radio completely with a sling strap. It is made of cowhide and uses common hardware stitched construction. The strap is often broken and the acid in the hide rots the stitches, so a case may be found, in pieces. It could be possible to make a replica of the case if one is handy with leather and has the tools to stake the fasteners.
RCA was aware of the cracked lid problem and offered a kit. Notice appears in the Riders for the BP-10. There are two variations of the speaker. The rectangular area in the center of the bezel is intended for the owners initials in the form of self stick letters.

GL

Chas

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 Post subject: Re: RCA Victor BP10
PostPosted: Apr Sun 05, 2015 2:47 am 
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Joined: Feb Fri 25, 2011 12:57 am
Posts: 1877
Location: 08033 Cherry Hill Jersey
I still have mine...and did the same thing you did with the 9v batteries. Nice job!

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 Post subject: Re: RCA Victor BP10
PostPosted: Apr Mon 06, 2015 7:49 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 12116
Chas wrote:
Fortunately tubes are inexpensive, still, and FWIK none have the 1L6.

Chas

The first 1L6 were used in Zenith's 1950 Transoceanic models...

Tom


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 Post subject: Re: RCA Victor BP10
PostPosted: Apr Mon 06, 2015 10:18 pm 
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Joined: May Wed 19, 2010 6:30 pm
Posts: 158
Location: San Antonio, Texas
I've been an avid fan of the RCA BP-10 radio for several years. It's a very historic and interesting radio in many ways. In fact, I got so excited about it I started a blog to post all of the information I was able to find. You can find the blog at: http://bp-10.blogspot.com/


Last edited by tinkertom on Apr Tue 07, 2015 3:33 pm, edited 1 time in total.

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 Post subject: Re: RCA Victor BP10
PostPosted: Apr Mon 06, 2015 10:50 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 12116
Interesting info, made me pull mine out, it's a late version with the -6 sticker...

The A battery holder is quite corroded but not much damage otherwise..


Tom


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 Post subject: Re: RCA Victor BP10
PostPosted: Apr Tue 07, 2015 1:16 am 
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Joined: Jan Wed 18, 2012 5:40 pm
Posts: 123
Location: 0shawa,Ontario Canada
Tx fer the link Tinkertom...very comprehensive and a deserving tribute to this historic portable... well done.... indeed they perform excellent when restored.... that pleasing tube audio in such a unique package


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 Post subject: Re: RCA Victor BP10
PostPosted: Apr Mon 27, 2015 12:37 am 
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Joined: Jan Wed 18, 2012 5:40 pm
Posts: 123
Location: 0shawa,Ontario Canada
Added Emerson 640 nice shape


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 Post subject: Re: RCA Victor BP10
PostPosted: Apr Mon 27, 2015 7:19 pm 
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Joined: Apr Mon 24, 2006 1:05 am
Posts: 2258
Location: Ellington CT
Great little portable. I bring mine to the CT shore every summer and it picks up NY City stations as if they were next door. Happy you had good luck with yours, troz!

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 Post subject: Re: RCA Victor BP10
PostPosted: Apr Tue 28, 2015 12:50 am 
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Joined: Jan Wed 18, 2012 5:40 pm
Posts: 123
Location: 0shawa,Ontario Canada
Yes this Emerson appears to be all original... perhaps the 16uf electrolytic was changed as most from the late 40's were paper construction.It has about the same volume output as the BP10 and is quite sensitive and selective.Appearance wise it is essentially flawless and I am not sure but it seems that the plastic gives off a slight odor.... although I have smelled that similar smell I think in many older radios.I wonder what sort of improvement I would expect if I changed out all the wax and paper caps? Since it works so well now I am hesitant to just jump right in and shotgun them all.I believe the BP10 improved in fidelity quite a bit once I recapped it and frankly I would think this Emerson would benefit from a refresh too.I am so impressed by the performance of both these 4 tubers.... and a nice change from the transistor bunch I usually have kickin around the bench.Here are the two handsome portables together


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 Post subject: Re: RCA Victor BP10
PostPosted: Apr Tue 28, 2015 12:24 pm 
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Joined: Sep Thu 23, 2010 6:37 am
Posts: 9175
Location: Powell River BC Canada
I always have liked the BP-10, repaired a few in the 60 odd years. It is good to see one
with the lid not broken at the hinges. Even the ones that damaged by leaky A cell worked well.

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 Post subject: Re: RCA Victor BP10
PostPosted: Apr Tue 28, 2015 5:14 pm 
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Joined: May Wed 19, 2010 6:30 pm
Posts: 158
Location: San Antonio, Texas
radiotechnician wrote:
I always have liked the BP-10, repaired a few in the 60 odd years. It is good to see one
with the lid not broken at the hinges. Even the ones that damaged by leaky A cell worked well.



It's a great radio, but the lid hinges are a weak point. The hinge stop added on the BA and BD versions helped to minimize hinge damage. But, it still happened if the owner wasn't careful. But, overall I think the design is about as good as it got for a four tube prewar portable :) .


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 Post subject: Re: RCA Victor BP10
PostPosted: Apr Tue 28, 2015 5:35 pm 
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Joined: Aug Wed 24, 2011 4:35 am
Posts: 3784
Location: Sunnyvale CA
tinkertom wrote:
radiotechnician wrote:
I always have liked the BP-10, repaired a few in the 60 odd years. It is good to see one
with the lid not broken at the hinges. Even the ones that damaged by leaky A cell worked well.



It's a great radio, but the lid hinges are a weak point. The hinge stop added on the BA and BD versions helped to minimize hinge damage. But, it still happened if the owner wasn't careful. But, overall I think the design is about as good as it got for a four tube prewar portable :) .


Mine was of course broken, just like most of them. I put a .025 6061-T6 strap along the entire hinge side of the top, inside and out, over a Epoxolite repair, and about halfway down the sides. Glued and screwed with 2-56 flathead screws about every inch. It's not going to break again!

I agree with everyone else, the radio works great and was also very simple to work on for something so small and packed together. And also like everyone else, my A battery holder was completely destroyed by corrosion when someone left the battery in for God knows how long.

Brett


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