12th Dec 2014, 1:16 pm | #61 |
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Re: Restoring my old Soviet radios
Quite ingenious, Ms Shelley would approve even if some here wouldn't!
The tuner shouldn't need force of course, it'll need to be investigated. The speaker may well work OK, depending on impedance, but it'll probably be sensitive enough if it fits. |
12th Dec 2014, 1:47 pm | #62 |
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Re: Restoring my old Soviet radios
The original LS might have been mains-energised, hence its replacement with a PM one of roughly the right size.
Nick. |
12th Dec 2014, 3:01 pm | #63 | ||
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Re: Restoring my old Soviet radios
This isn't a joke from me neither. Hans actually have a VEF radio inside that cabinet.
Quote:
See attached picture of one of my own VEF PCBs to compare. Or see here: http://www.kn34pc.com/sch/sch_rx/rx_vef_206/sn_08.jpg http://www.radiomuseum.org/r/vef_vef_206.html And that's definitively a VEF turret too. Quote:
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12th Dec 2014, 3:04 pm | #64 |
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Re: Restoring my old Soviet radios
OK Hans and Miguel, I stand corrected
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18th Dec 2014, 11:19 pm | #65 |
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Re: Restoring my old Soviet radios
I have begun to work on my own Selena (my mother's, in fact). Althought the cabinet is in very bad condition, due to "diving" from the bedside table to the floor during my old man "curdas" (getting drunk), the inside of the radio looks in good condition with almost no sign of corrosion or rust. The only rusted parts that I have found are, guess what.......the transistors legs. Most of them had broken legs.
I desoldered all of them for testing and after that I found that all of them were fine electronicwise, but all of them had broken leads. Except for two of them, I was able to solder them again but with shorter leads. Then I replaced the two unusables by 1T308 transistors and I put the later on the same positions that I did on my father-in-law's radio, as I knew this would work And it worked!!!!! The RF PCB is working very well. Yesterday I was able to tune all of the Cuban stations on the MW band. Now I have to work with the audio amplifier but I think that is something I can do. By the way, I found that this radio uses NPN Silicon transistors on the audio amplifier instead of the PNP Germaniums that I found on the previous Selena. By this reason, I think that this is not a B210 model but instead a B211 or B212, althought it has the inscription "B210" on the front panel. Any comment on this? It uses KT315 (NPN) and KT361 (PNP) Silicon transistors for low signal in the audio amplifier, and KT816 and KT817 (complementary pair) for the power output.
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18th Dec 2014, 11:44 pm | #66 |
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Re: Restoring my old Soviet radios
Congratulations.
A policy of continuous improvement? I'm baffled as to where my Selena is. |
22nd Dec 2014, 5:53 pm | #67 |
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Re: Restoring my old Soviet radios
I was just doing a search on Yandex and think the actual Russian spelling of Selena in context of the radio is "Селена". Russian "C" is same as "S" and "H" is an "N" sound. Third letter is "L" which is Cyrillic.
There must be scores of Russian sites dedicated to these radios but I thought anyway for curiosity I'd forward what's likely the Russian spelling for the radio. Apparently it's a female name derived from Greek. |
23rd Dec 2014, 2:56 pm | #68 | |
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Re: Restoring my old Soviet radios
As far as I know, Selena is the export name for this set, which was sold in the Soviet Union under the brand name "Okean" (Ocean).
Quote:
In Russian the name of this Goddess is "Селе́на". https://ru.wikipedia.org/wiki/%D0%A1...B5%D0%BD%D0%B0
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23rd Dec 2014, 5:17 pm | #69 |
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Re: Restoring my old Soviet radios
That sounds about right. I was last in Russia around 1997 which is quite some time ago. At that time I could have got hold of lots of Tsarist or Soviet radios.
I recall probably the best TV set I ever used was a Soviet one that belonged to my landlady. It weighed a ton - so heavy it was hard to lift. Yet the audio sound was deep and great tone. |
28th Dec 2014, 3:38 am | #70 |
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Re: Restoring my old Soviet radios
This is an interesting thread, and it's inspired me to retrieve my Selena B210 from the garden shed. Unfortunately it's now dead from the volume control back to the aerial. (Before it went in the shed it was only missing knobs and the MW band). Where could I get a circuit diagram for the B210? It looks very complicated inside, and I don't think I can fix it "blind".
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28th Dec 2014, 7:27 pm | #71 |
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Re: Restoring my old Soviet radios
A Tsarist radio would be seriously interesting- pre 1917?
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29th Dec 2014, 7:42 am | #72 |
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Re: Restoring my old Soviet radios
Here's a close-up of the fault in my Selena B210, broken leads on the last IF transistor. I didn't need the circuit, just a magnifying glass! That certainly looks like rust. Perhaps it's a combination of metal stress, flux residue, and damp that causes this. I'll be keepng the set in the house from now on.
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29th Dec 2014, 12:41 pm | #73 |
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Re: Restoring my old Soviet radios
At least they broke at the PCB end!
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29th Dec 2014, 2:34 pm | #74 | |
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Re: Restoring my old Soviet radios
Quote:
It seems that it happens on both ends of the world As Herald1360 said, your lucky cause they broke on the PCB end. Just desolder it from the PCB, test the transistor (it surely will be fine), then cut the leads at the same lenght and solder it again. It should work. Audio signal is in the second pole of that PCB (from right to left)
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29th Dec 2014, 5:36 pm | #75 |
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Re: Restoring my old Soviet radios
Not wanting to digress too much, I think we're talking around 1905 when Tsar Nicholas was overthrown. That would be roughly the same era as Titanic. On Titanic they seemed to be using Morse (at least in the movie) so maybe Tsarist telegraph might be more accurate.
For some reason, I think I'd like to see a Stalin era tube radio around the thirties period. I imagine them as pretty huge. |
31st Dec 2014, 10:17 am | #76 |
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Re: Restoring my old Soviet radios
Hi Miguel. It's all working properly now. I used veroboard pins when soldering the transistor back to make up the missing lead length. I've also found the circuit diagram, it's in the VRSD section under the brand name "Vega". Searching for data for "Selena B210" will draw a blank.
Anyway, a fantastic radio, easily my best shortwave portable, and great fun to play with! This is a picture of the aerial socket wiring, which differs from the circuit in the Vega B210-2 diagram.
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7th Jan 2015, 2:51 pm | #77 |
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Re: Restoring my old Soviet radios
Here some pictures of my advances on the Selena. I intend to paint the wooden frame and the front panel. I have replaced all of the electrolytic caps in the audio amplifier, as I have never liked the Soviet electrolytics. Then I had to repair the wooden frame cause it had all of the pieces separated. They are originally glued but I used bolts and angular pieces to join the parts.
Finally I had to apply sand paper to the front panel to remove the paint that was in bad condition, in order to apply black paint. Here some pictures
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7th Jan 2015, 8:26 pm | #78 |
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Re: Restoring my old Soviet radios
I look forward to the finished result.
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10th Jan 2015, 2:52 am | #79 |
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Re: Restoring my old Soviet radios
Were the control knobs OK on your Selena, Miguel? They break very easily, and mine were missing. I used Japanese splined push-on types with brass tube glued into the splined hole, then I pinched the tube to fit the flats on the shafts. There are two sizes of shaft on this set, and two sizes of knob, making three different knob types to match!
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12th Jan 2015, 9:12 pm | #80 | |
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Re: Restoring my old Soviet radios
Quote:
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