Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Test message slip for New Beam System
Full title - New Beam System England and Australia, April 7, 1927. Purple code on cream slip of paper : Final test slip for the inauguration of England - Australia New Beam System (High Speed Wireless). The Short Wave, April 7, 1927.
Pwnc
Diwydiant
Rhif yr Eitem
34.219/4.1
Derbyniad
Donation, 20/4/1934
Mesuriadau
Meithder
(mm): 12
Lled
(mm): 350
Deunydd
papur
Lleoliad
In store
Dosbarth
communicationNid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.