The idea here is to have a stand alone HF system for Emcomm until I can get the genset running... Which I played with after Hurricane IKE. Lots of lessons learned... Given, - a 500W SGC Cube - Two AG
Those batteries are the strongest capacitors you can get. 73 Roger (K8RI) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/lis
I agree. With decent AGM batteries I can't really see the need for capacitors. I have worked with AGM SLA betteries for many years in Ambulance electrical systems. I also use them to power various re
In addition to what Mike says, I would look at the 12 v line with a scope when you get it running. If you see any RF there (more than a few millivolts), a bypass cap would be in order. 73, Bill W6WRT
The capacitors don't replace batteries, but they can save a lot in power supply and cable size. I used to have a ss amp which required around 90A at 12v, and I used a pair of 75 amp Astrons and some
Don't be too critical of the loud car stereo crowd. It is because of them that you can buy a 1-2 Farad cap at a price that doesn't break the bank! Also some (not all) of the power connectors, fuses a
This only works with CW and unprocessed SSB. Heavily processed SSB and digital modes have a sufficiently high duty cycle (low peak to average ratio) that the capacitor is not able to completely char
That doesn't come near making it worth while. IQ is inversely proportional to the db level. Some day they will have to pay with lost hearing. Of course I group them with smokers and I did smoke for m
"However, by putting a very large capacitor AT THE AMPLIFIER, you can use smaller wires and a smaller power supply. The capacitor charges during periods of low current draw and then supplies power wh
Just watch the plate voltage drop in a typical amp as you add compression. Unprocessed SSB in a typical amp may show 100 volt drop while heavily processed with compression and clipping might show a 3
A 300 V drop in a 2500V supply is less than 1.5% ... that's not even in the same league as a 2V drop (11.5V under load) for a 13.8V power supply. The IMD in a 100W transceiver on a Gamma supply make
Erm ... 300/2500 is 12%, leaving 88% going to the tube. The same loss on a 13.8V supply is 1.65V, leaving 12.14V. -- Mike Andrews, W5EGO mikea@mikea.ath.cx Tired old sysadmin ________________________
And?... It's an example to show the difference between raw SSB, and heavily processed SSB or even steady carrier. When you get to high current low voltage the difference becomes much more and require
ok, Vic I have learned a lot from this discussion and I am glad we got into it as there is a lot of interest in it among the newbies and those who are barely QRO literate, as it were. I believe that
ok, Vic I have learned a lot from this discussion and I am glad we got into it as there is a lot of interest in it among the newbies and those who are barely QRO literate, as it were. I believe that
Just watch the plate voltage drop in a typical amp as you add compression. Unprocessed SSB in a typical amp may show 100 volt drop while heavily processed with compression and clipping might show a 3