A-007-06: Losses in real antenna systems, effective radiated power
A-007-06-01:
A transmitter has an output of 100 watts. The cable and connectors have a composite loss of 3 dB, and the antenna has a gain of 6 dB. What is the Effective Radiated Power?
200 watts
350 watts
400 watts
300 watts
A-007-06-02:
As standing wave ratio rises, so does the loss in the transmission line. This is caused by:
dielectric and conductor heat losses
high antenna currents
high antenna voltage
leakage to ground through the dielectric
A-007-06-03:
What is the Effective Radiated Power of an amateur transmitter, if the transmitter output power is 200 watts, the transmission line loss is 5 watts, and the antenna power gain is 3 dB?
390 watts
197 watts
228 watts
178 watts
A-007-06-04:
Effective Radiated Power means the:
transmitter output power, minus line losses, plus antenna gain
power supplied to the antenna before the modulation of the carrier
power supplied to the feedline plus antenna gain
ratio of signal output power to signal input power
A-007-06-05:
A transmitter has an output power of 200 watts. The coaxial and connector losses are 3 dB in total, and the antenna gain is 9 dB. What is the approximate Effective Radiated Power of this system?
800 watts
3200 watts
1600 watts
400 watts
A-007-06-06:
A transmitter has a power output of 100 watts. There is a loss of 1.30 dB in the transmission line, a loss of 0.2 dB through the transmatch, and a gain of 4.50 dB in the antenna. The Effective Radiated Power (ERP) is:
200 watts
800 watts
400 watts
100 watts
A-007-06-07:
If the overall gain of an amateur station is increased by 3 dB the ERP (Effective Radiated Power) will:
double
decrease by 3 watts
remain the same
be cut in half
A-007-06-08:
A transmitter has a power output of 125 watts. There is a loss of 0.8 dB in the transmission line, 0.2 dB in the transmatch, and a gain of 10 dB in the antenna. The Effective Radiated Power (ERP) is:
1000
1250
1125
134
A-007-06-09:
If a 3 dB gain antenna is replaced with a 9 dB gain antenna, with no other changes, the Effective Radiated Power (ERP) will increase by:
4
6
1.5
2
A-007-06-10:
A transmitter has an output of 2000 watts PEP. The transmission line, connectors and transmatch have a composite loss of 1 dB, and the gain from the stacked Yagi antenna is 10 dB. What is the Effective Radiated Power (ERP) in watts PEP?
16 000
18 000
20 000
2009
A-007-06-11:
A transmitter has an output of 1000 watts PEP. The coaxial cable, connectors and transmatch have a composite loss of 1 dB, and the antenna gain is 10 dB. What is the Effective Radiated Power (ERP) in watts PEP?
8000
1009
10 000
9000
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