TheRadioBoard

Hi! I was given a Selena B215 radio. Hardly I have been cleard the contacts from the band selector switch and I changed the red condensers with others new. The problem is that on the radiomuseum it is said that the radio is on the 88-108 and on the other sites it is said that is tune 65-73. My radio tunes 65-73MHz..and I saw different diagrams of Selena B216 with tables with values for 215 and 217,but the blocs look different: blocs with all transistors npn and blocs with 2 transistors pnp and one npn.. Also there are two lists: E-1 and E-2. I saw that both E-1 and E-2 have smaller values than the original shown bloc,but I don't know which variant to choose for work on the FM West band ?E-1 or E-2?
I think that the only difference between 215/216/217 should be on the FM bloc and on the SW bands received.
Also,at power supply I have two transistors,not one and a zenner like how is shown in the diagram.

http://www.sendspace.com/file/5pbdr8

http://www.sendspace.com/file/bnhasp

http://www.sendspace.com/file/9iyi6x

http://www.sendspace.com/file/p1628b

On MW and LW and some of SW band the S-meter works very good,but on FM after I tuned the FI with a 10,7MHz signal generator I hardly saw a half of a gradation . I tried to put a converter before the FM bloc to tune a part of the 88-108 (98-108)but it has harmonics and some stations are tuned very closely or distorted by the others,and ,again,the maxim signal is only a half of a gradation (like on ruler a gradation is 1cm,and a half is 0,5cm)

Other difference is the R25 variable resistor connected to another part of the circuit,not to L12.2

Need help,please

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Lazarescu A.

Hi! Finaly, I found the correct diagram for my radio.

http://www.sendspace.com/file/fbkbrj

here are the modules:

http://www.sendspace.com/file/7ugcmd

Now,after seeing the diagram,could you tell me which version to choose for "pull it on band 88-108"?E1 or E2?They have smaller values like in the input circuit,but the condensers which are series with the tuning capacitor have different values 100p or 39p?For example in Selena B11 I have to double the value of one padder for having the band extension,because 65-78 = 8MHz and 88-108 = 20MHz bandwidth..

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Lazarescu A.