[amsat-bb] 1957 The keyer?

[Robert Bruninga]

3 Tubes nice...
Has someone said how they keyed the CW?
Bob

-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces at amsat.org> On Behalf Of Mail
Sent: Friday, October 5, 2018 10:40 AM
To: Burns Fisher <burns at fisher.cc>
Cc: AMSAT BB <amsat-bb at amsat.org>; JR3MHP <jr3mhp at jarl.com>
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 <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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_______________________________________________
Sent via AMSAT-BB at amsat.org. 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