Message-ID: <4D5B9F05.5020902@o2.co.uk>
Date: Wed, 16 Feb 2011 09:55:17 +0000
From: Peter Dodd <g3ldo@o2.co.uk>
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References: <AANLkTine7u4sKEcNgPxr2q7Bs=4HhMg8D5HaQ-Vp4Q7D@mail.gmail.com> <4D5B4C77.1010804@hifidelity.com>
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Subject: LF: LF 54 Years
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While serving in the RAF in 1957 I was posted to Christmas Island for 
the British nuclear tests in the Pacific.
During that time I was also stationed for a short while at the Transit 
Aircraft Flight at Hickam AFB at Hawaii. While there I bought a 
transistor radio kit (made in Japan) at the air base PX, which I 
assembled when I got back to Christmas Island.
With this I was able to pick up MF stations from Hawaii (KHOH & KHON as 
I recall) and occasionally other MF stations such as Australia when 
conditions were good
The kit used two transistors an RF amp and a detector . The detector 
stage was also an audio amplifier using a reflex circuit which made the 
most out of these expensive active devices. I understand reflex circuits 
were used in the early days of valves (tubes).

Regards

Peter, G3LDO


On 16/02/2011 04:03, Steve Dove wrote:
> My first uA709 (first real commercial op-amp, circa 1968) cost me five 
> quid.  Which was a LOT of newspapers.
>
> Unstable, noisy.  And, with its unprotected output stage didn't last 
> very long . . .
>
>         73        Steve
>
> On 2/15/2011 7:19 PM, Andy Talbot wrote:
>> 40 Years ago today decimal money was introduced to the UK  It was half
>
>