-
Categories
-
Platforms
-
Content
Sir Martfoxy . . . . .
A 1N60 GERMANIUM junction is exactly what is being needed . . . and the junctin voltage tested is being proper.
As for your clipped C42 fixed ceramic or silver mica capacitor, seems like it met the guillotine of the final test and ALIGNMENT person.
It is in parallel with the C43 variable capacitor to get an adjustable value of from 12 - 32 pf to properly resonate with the cojoined primary winding of the L5 antenna coil for the LW radio band sector.
They must have found there being TOO much capacitance to properly align to spec and to achieve OPTIMUM sensitivity / tracking, so they clipped it out to then have the reduced end result of only a few pf on up to the full 20 pf limit of the sole use of C43.
Now . . . . . just for testing, do you have enough random resistors, so that that you might multi series- parallel-tandem- quasi - shunt together enough selected values . . . . to end up with that opened ~ 150 ohm unit being needed ? . . . . Or was a 150 also being included in your diode order ?
THAT IS . . . . . unless you STILL have that intolerable 7 ohm resistance reading across the two solder pads of the once vacated D5 zener diode ? ? ?
Boom . . chuck . . a . . . lug . . . . Here it is ! . . . . . le C42
Thaaaaaaasit . . . . . . .
73's de Edd . . . . .
.
A 1N60 GERMANIUM junction is exactly what is being needed . . . and the junctin voltage tested is being proper.
As for your clipped C42 fixed ceramic or silver mica capacitor, seems like it met the guillotine of the final test and ALIGNMENT person.
It is in parallel with the C43 variable capacitor to get an adjustable value of from 12 - 32 pf to properly resonate with the cojoined primary winding of the L5 antenna coil for the LW radio band sector.
They must have found there being TOO much capacitance to properly align to spec and to achieve OPTIMUM sensitivity / tracking, so they clipped it out to then have the reduced end result of only a few pf on up to the full 20 pf limit of the sole use of C43.
Now . . . . . just for testing, do you have enough random resistors, so that that you might multi series- parallel-tandem- quasi - shunt together enough selected values . . . . to end up with that opened ~ 150 ohm unit being needed ? . . . . Or was a 150 also being included in your diode order ?
THAT IS . . . . . unless you STILL have that intolerable 7 ohm resistance reading across the two solder pads of the once vacated D5 zener diode ? ? ?
Boom . . chuck . . a . . . lug . . . . Here it is ! . . . . . le C42
Thaaaaaaasit . . . . . . .
73's de Edd . . . . .
.
Last edited:
I have tested the zenor diode and get 4.4v. I managed to get another 150Ohm resistor (159Ohm). However its still not working. I measure to the zenor diode and get about 5.6v.
I found out if the power switch is off then I get 2Ohm across C84 1000uF capacitors , but when its on I get about 56 Ohms. I get 0.056 v across that capacitor. The other 1000uf C24 I get 5.5v across it.
I plugged a DIN lead into the radio from my stereo headphone socket and to get a slight sound out of it, I have to turn the stereo volume right up.
I have just noticed some damage on the pcb I am not sure when it happened. Photo attached.
Thank you
I found out if the power switch is off then I get 2Ohm across C84 1000uF capacitors , but when its on I get about 56 Ohms. I get 0.056 v across that capacitor. The other 1000uf C24 I get 5.5v across it.
I plugged a DIN lead into the radio from my stereo headphone socket and to get a slight sound out of it, I have to turn the stereo volume right up.
I have just noticed some damage on the pcb I am not sure when it happened. Photo attached.
Thank you
Attachments
Last edited:
Attachments
Last edited:
Similar threads
