3 Tubes nice... Has someone said how they keyed the CW? Bob
-----Original Message----- From: AMSAT-BB [email protected] On Behalf Of Mail Sent: Friday, October 5, 2018 10:40 AM To: Burns Fisher [email protected] Cc: AMSAT BB [email protected]; JR3MHP [email protected] Subject: Re: [amsat-bb] 1957
Google ‘Sputnik 1 Hackaday’ and you will find the Sputnik 1 radio. Yes it used tubes. PA3CNO did a great job of recreating this piece of history.
Dan
Sent from here. NM3A
On Oct 5, 2018, at 08:45, Burns Fisher [email protected] wrote:
Lots of interesting stuff in the wikipedia article: https://en.wikipedia.org/wiki/Sputnik_1#Design but it does not say what the active device was. A 1 watt transmitter in 1957? Must have been tubes, no?
An interesting thing I did not know: It was filled with nitrogen and used a fan to cool off the electronics!
On Thu, Oct 4, 2018 at 10:34 PM, JR3MHP [email protected] wrote:
Awesome!! Thank you, Bruce!!
What kind of devices did they use for transmitting this signal? I wonder transistors were good enough for this frequency, but.... vacuum tubes??
Best 73, Hiro (JR3MHP) _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb