Anonymous

User:Larz: Difference between revisions

From London Hackspace Wiki
716 bytes removed ,  30 June 2012
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== '''Prior Projects''' ==
== '''Prior Projects''' ==
=== ''Heathkit GR-4000 Projector Television'' ===
This was a six foot diagonal silver screen projection TV.  It had three large CRTs (Red/Green/Blue).  It was a nightmare to keep the three guns converged.  Every time you turned it on, the set was cold, and it projected three slightly offset images.  You would tweak the geometry with a dozen little knobs, then watch for an hour.  As the set warmed up, the electronics drifted.  You would have to tweak it during the adverts!
The projector was a big wooden box that sat in the middle of the room, about 2 meters away from the screen.  If the lights were dim, and you didn't look too closely, you'd think you were at the cinema!  All this for only $1800 too.
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=== ''High Power Rocketry Electronics <small>(telemetry, staging, recovery deployment)</small>'' ===
=== ''High Power Rocketry Electronics <small>(telemetry, staging, recovery deployment)</small>'' ===
I am TRA-Tripoly Rocketry Association Level II certified in the USA.
I am TRA-Tripoly Rocketry Association Level II certified in the USA.
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I received by HAM radio license in the USA back in 1998.  (KB9SZH expired)
I received by HAM radio license in the USA back in 1998.  (KB9SZH expired)


I've built a number of interesting antennae.  I'll need to revisit this when I build a video rig for my quadcopter.  I'd like to try a 5GHz skew-planar wheel or cover leaf antennae for this.
I've built a number of interesting antennae.  I'll need to revisit this when I build a video rig for my quadcopter.  I'd like to try a 5GHz skew-planar wheel or clover leaf antennae for this.
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=== ''Anything Forrest Mims published'' ===
=== ''Anything Forrest Mims published'' ===
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== '''Fun Toys''' ==
== '''Fun Toys''' ==