Antique radios, Old Time Radios
TAA521
|
Country:
Germany
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|
| Identical to |
TAA521
= SN72709
= µA709
|
| Similar
Tubes |
Normally replaceable-slightly different:
MAA503
; MAA504
; N5709T
Other characteristic (electr. data):
TAA522
|
| First Source
(s) |
Oct.1966 : -- Collector info (Sammler)
|
|
Successor Tubes
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TBA221
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