lw1ecp wrote:
On 30 mayo, 06:17, "The Legend" trabant owners club@Nicks
place.comco wrote:
The Car and Deep Cycle Battery FAQ Web pages have been moved (...)
Thank you for the news!. One important lesson we electronic
experimenters should draw from these FAQ is car batteries are not a
good choice for us, their specialty is delivering huge starting
currents, but they suffer a lot if discharged almost completely, even
with small currents.
Daniel Perez

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However car batteries can be used very effectively for amateur radio
operations by using them as a peak current provider in conjunction with
a modest (current wise) PSU.
A nominal 100 W RF SSB transmitter might need say 20 Amperes in the
peaks , but (even with audio processing) ,on transmit ,the average
current will hardly exceed 8 Amperes and taking into account a 50/50
tx/rx duration ratio , such a transmitter will happily operate for long
periods with a say 60Ah car battery and a 6 Amperes power supply unit.
And the battery will have a long life. Of course ,to be close to the
transceiver the battery will have to be of the sealed variety .


Frank GM0CSZ / KN6WH