[quote="pranam77
Yes..you are right. The said measurements shows the power of the transmitter and not the transmission. I should have mentioned the Voltage and current measurements of the "Final RF amplifier section". Thanks[/quote]
those measurements will still only show the total power usage of the final device, not of the RF output power
for example one of my transmitters is drawing 22A at 13.8V, the final stage is drawing 20A @13.8V
20 x 13.8 = 276W BUT the transmitter is only producing 100W of RF
as mentioned earlier, efficiencies are relatively low in most RF devices
MOST of the rest of the power is being wasted as generated heat and lots of it, hence the HUGE heatsinks on transmitters
its just the way it is
I recently built a 1296MHz power amp using a M57762 power block module its efficiency is only ~ 28 % !!!
1W in produces 20W out ... 13.8V @ 5.5A
thats not cuz of my cct design ... thats the ratings of the device
cheers
Dave
VK2TDN