Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Test message slip for transmarine wireless
Full title - Across the Atlantic Ocean. First Message January 18, 1903. Final test slip for test sent across Atlantic before first message. Blue morse code on slip of cream paper.
Pwnc
Diwydiant
Rhif yr Eitem
34.219/2.1
Mesuriadau
Meithder
(mm): 13
Lled
(mm): 525
Dosbarth
communicationNid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.