[Amps] OK, here's a home brewing question. I JUST DON'T GET IT!

[Chris Wilson]

Hello Ron,

This  amp is on 136kHz (not running 136kW, that was, (I hope obviously....), a
typo!  1kW is par for the course given antenna inefficiency down there
:)



>    On 01/13/2017 07:54 AM, Chris Wilson wrote in part:

>   /* snip */
>    I am running it off a pair of big HP SMPS computer server supplies.
> 52V each, at many Amps. In series for full power, singly for low
> power. Before I changed driver chips and added some additions to the
> protection circuit I had few FET failures, even with them in series.
>   /* snip */
>   Sorry for the diatribe, any advice greatly appreciated Manfred. When
> it all works without a blow up I can get from here in the middle of
> the UK into Asiatic Russia, Iceland, Italy etcetera, so it does have
> some promise when fettled up a bit!
>    ==  ==  ==  ==  ==  ==  ==  ==  ==  ==
>    The 600 meter (or 630 meter) amateur radio band is a frequency band
> allocated by the International Telecommunication Union (ITU) to amateur
> radio operators, and it ranges from 472 to 479 kHz, or equivalently
> 625.9 to 635.1 meters wavelength.

>   The band is available on a secondary basis in all ITU regions with the
> limitation that amateur stations have maximum radiated power of 1 Watt
> effective isotropic radiated power (EIRP); however, stations more than
> 800 km from certain countries may be permitted to use 5 Watts EIRP.

>    from:  https://en.wikipedia.org/wiki/600-meter_amateur_radio_band
>    ==  ==  ==  ==  ==  ==  ==  ==  ==  ==
> The U.S. Federal Communications Commission (FCC) granted the American 
> Radio Relay League an experimental license to explore such uses in 
> September 2006. In 2015 the FCC proposed rules to permit amateur use of
> 630 and 2200 meters in line with decisions made at the World 
> Radiocommunication Conference 2012.

>    from:  https://en.wikipedia.org/wiki/600-meter_amateur_radio_band



This  amp is on 136kHz (not 136kW, that was, (I hope obviously....), a
typo!  1kW is par for the course given antenna inefficiency down there
:)


-- 
Best regards,
 Chris                            mailto:chris at chriswilson.tv