Pikatron UP 3147 M mic transformers ?

[00940]

I wondered if anyone had any info on these ?  I couldn't find anything on the web except DCR values (2X35R and 3.3K).

Thanks for any input 

 

[00940]

Just for the record, here are the specs as given by pikatron (datasheet attached):

Übersetzungsverhältnis : 0,5 + 0,5 : 10
Phasenlage : 3-4 4-5 10-6
Quelle : 200
Last : ca. 100 k
Frequenzgang : 20 Hz – 20 kHz 1 dB
Klirrfaktor : K3 0,5 % f= 40 Hz Uprim. : max. 200 mV