USSR HAM-Radio CallBook in 1926

I just found a very interesting paper - a complete list of all transmitting amateur radio stations in 1926 in the USSR, club stations, as well as personal ones. It is remarkable, that the frequencies and power levels of club stations are selected in such a way that ensures reliable traffic between distant regions and Moscow - the farther station from center, the higher its power and shorter its wavelength. And another note - individuals had managed to use different wavelengths, so it was not too easy to contact each other that times.
Scan of ORIGINAL CALLBOOK is under the following translation.

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Due to p.18 instruction NKP&T (People's Commissariat of Posts and Telegraphs) for
private radio-stations, exploited due to order of SNK USSR 5/II-1926,
current document is for public information.


DECLARATION
People's Commissariat of Posts and Telegraphs U.S.S.R.

LIST
OF PRIVATE TRANSMITTING RADIO STATIONS,
PERMITTED VARIOUS ORGANIZATIONS AND AGENCIES TO INSTALL
 

#	Location	Main power	Net power	Owner	Wave	Date license	For what purpose	Call Sign
1	Kharkov	10W	4W	Kharkov Technology Institute	200m	7/V-1926	Research	R.A.31
2	Saratov, People's Palace, Laboratory of Provincial Soviet of ODR (Society of Friends of Radio)	50W	20W	Saratov Provincial Soviet of ODR	420m	4/VI-1926	Research and Cultural	R.A.32
3	Moscow, B.Gnezdnikovsky lane 10, Radio-Laboratory MGSPS	-	1kW	Moscow Provincial Soviet of Trade Unions	450m	1/VII-1926	Educational and Research	R.A.35
4	Moscow, B.Gnezdnikovsky lane 10, Radio-Laboratory MGSPS	-	10W	Moscow Provincial Soviet of Trade Unions	0-10m 30-40m 70-80m 110-120m 110m	1/VII-1926	Educational and Research	R.A.36
5	Leningrad, Palace of Labor	150W	50W	Leningrad Provincial Union Soviet of Cultural Department	320m	8/VI-1926	Education and Experimental	R.A.37
6	Azerbaijan, Gandzhinsky region, Colony Elenendorf	50W	20W	Elenendorf Secondary School	100m	7/VI-1926	Educational	R.A.29
7	Leningrad, International ave., 19	15W	8W	Main Chamber of Weights and Measures	1000m 2500m 5000m 7500m	29/V-1926	Experimental reference signals broadcasting	R.A.28
8	Tomsk, Tomsk State University	300W	50W	Physical Laboratory	175m 27m	16/II-1926	Research	R.A.19
9	Kharkov, Equality and Fraternity str. 40, Radiometric Laboratory of Ukrainian Chamber of Weights and Measures	10W	10W	Kharkov Chamber of Weights and Measures	200-400m	16/II-1926	Research	R.A.23
10	Moscow, Armenian lane 13	150W	75W	TASS Agency	200-300m	26/VII-1926	Hot news for the offices of the Moscow newspapers	R.A.50
11	Vladivostok, "Dalzavod" factory, Radio-Laboratory of Far-East State University	900W	500W	Far-East State University	15m-35m	12/X-1926	Research	R.A.03
12	Moscow, Gorokhovskaya str. 16	500W	300W	Technical College of Communication In The Name Of Podbelsky	310m	2/XII-1925	Educational adn Experimental	R.A.10

LIST
OF TRANSMITTERS ALLOWED INDIVIDUALS TO INSTALL
 

#	Owner and Location	Output power	Wave	Call	Date license
1	Citizen Lbov, Nizhny Novgorod New str. 40, ap. 2	0-100W	0-120m	01R.A.	22/VI-1925
2	Citizen Pekin, Moscow Alexandrovsky lane 4, ap. 2	20W	60m	02R.A.	31/VIII-1926
3	Citizen Davydov, Kharkov Southern settlement, Angle of Prodolny str. 5, Lyubenko	10W	27m	03R.A.	3/IV-1926
4	Nikolai I. Kupriyanov, Leningrad Poltavskaya str. 8, ap. 28	0-50W	300m	04R.A.	11/IX-1926

Radio Department of NKP&T           Moscow, 25 October 1926

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USSR CallBook 1926