Take a look at http://cgi.ebay.com/Book-Radio-Station-R-126-R126-Russian-Military-Manual_W0 QQitemZ6628083591QQcategoryZ135QQrdZ1QQcmdZViewItem Someone is offering for sale a "restricted" Russian manual for a military radio. Take a look at the circuit diagram. No wonder they are trying to kept it secret! de VK2KGG George Georgevits