Help reviving Kl.Fu.Spr. D

[Albrechtfunker]

Does anyone have ANY kind of service info on this thing? Ive been able to find two different schematics on it, one incomplete and one not very legible. This poor radio was modified somehow in the past, ( heard that was common ), and im trying to get it to come back to life at factory specifications again. Trimmer capacitors were added, the ferrite core in the tuning coil was broken and VERY much a PITA to remove, and some flaky hodgepodge wiring and soldering was attempted. Im trying to reverse all of this mess. Ive built a battery pack for the H.V. And L.V. And was able to get it to kind of receive. It was transmitting in the receive setting and dead in the transmit setting. Someone rigged a very low value electrolytic capacitor in it where both sides were going to ground with a H.V. Wire connected too.... Needless to say that cap blew smelly green "cheese" everywhere.
HELP??
ANY info is MUCH appreciated. Im going crazy scouring the internet for information that just doesnt seem to be there. If anyone has some info they would like to share with me, that would be great! I have plenty of test equipment and about fifteen years electronics servicing going for me, but not having proper documentation or a comparison radio is leaving me stuck.
Thanks in advance!!
I cant seem to get pictures loaded, but if i figure it out ill provide them for reference.

[Funksammler]

Here is the schematic of the Dorette:

<a href="http://s672.photobucket.com/user/Funksammler/media/Dorette_zps89mbjrtw.jpeg.html" target="_blank"><img src="http://i672.photobucket.com/albums/vv86/Funksammler/Dorette_zps89mbjrtw.jpeg" border="0" alt=" photo Dorette_zps89mbjrtw.jpeg"/></a>

The schematic is part of an article in German describing the set and how it can be modified to work on the 10 metre band. How is your German?

regards,

Funksammler

[Albrechtfunker]

I can understand some and can translate what i dont know yet. Thanks!

[Funksammler]

Here is the article:

<a href="http://s672.photobucket.com/user/Funksammler/media/Dorette%201_zpsiusoucz6.jpeg.html" target="_blank"><img src="http://i672.photobucket.com/albums/vv86/Funksammler/Dorette%201_zpsiusoucz6.jpeg" border="0" alt=" photo Dorette 1_zpsiusoucz6.jpeg"/></a>

<a href="http://s672.photobucket.com/user/Funksammler/media/Dorette%202_zpshnpxgw2a.jpeg.html" target="_blank"><img src="http://i672.photobucket.com/albums/vv86/Funksammler/Dorette%202_zpshnpxgw2a.jpeg" border="0" alt=" photo Dorette 2_zpshnpxgw2a.jpeg"/></a>

<a href="http://s672.photobucket.com/user/Funksammler/media/Dorette%204_zpspxyeoprv.jpeg.html" target="_blank"><img src="http://i672.photobucket.com/albums/vv86/Funksammler/Dorette%204_zpspxyeoprv.jpeg" border="0" alt=" photo Dorette 4_zpspxyeoprv.jpeg"/></a>

<a href="http://s672.photobucket.com/user/Funksammler/media/Dorette%203_zpsivp1bxzm.jpeg.html" target="_blank"><img src="http://i672.photobucket.com/albums/vv86/Funksammler/Dorette%203_zpsivp1bxzm.jpeg" border="0" alt=" photo Dorette 3_zpsivp1bxzm.jpeg"/></a>

It basically describes how you can shift the frequency by adding a capacitor (Cz in the schematic). A few other capacitors can be added to optimise the circuit for the new frequency.

These are typical modification done by radio amateurs after the war, so perhaps these are similar to the ones done to your example.

Hope this helps,

Funksammler

[Albrechtfunker]

Awesome! Thank you!!

[Val]

If you can read russian (even via Google Translate), look here

http://www.radiostation.ru/home/museum.html


There is nicely redrawn schematics and several articles about reworking/modification typically done by radio amateurs.

Direct link for the schematics

http://www.radiostation.ru/home/imag..._principal.gif

One thing to consider - he has drawn grid connection to the filament inside the RL1P2

[Albrechtfunker]

Great! Thank you both very much! Yall are awesome!!

[rv12p2000]

Hello

Some technical informations about the batteries

see : http://www.radiomuseum.org/forumdata..._2013_44_2.pdf

locate : Die Batterien für den Kleinfunksprecher d (from page 18 to page 23)

Regards
Rv12p2000