[amsat-bb] 1957

Mail nm3a at mail.com
Fri Oct 5 14:40:26 UTC 2018


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 <burns at fisher.cc> 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 <jr3mhp at jarl.com> 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)
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