HB3YAQLucerne
Search results.
12 results for «dBm»
By relevance- Glossary
dBm
dBm expresses an absolute power level relative to 1 milliwatt, combining the logarithmic dB scale with a fixed power reference.
- Learning
dB, dBm and power
dBm has a fixed reference
- Tools
dBm, watts & volts
0 dBm equals 1 mW.
- Learning
Antenna gain, dBi and EIRP
In logarithmic form: EIRP in dBm = transmit power in dBm − feed-line loss in dB + antenna gain in dBi.
- AOR
AR-DV10
BNC, 50 Ω; maximum input 0 dBm
AOR, LTD. Photo. - Learning
Building a radio link budget
Start with transmit power in dBm.
- Tools
Link budget
Levels use dBm, gains dBi and losses dB.
- Learning
Noise, bandwidth and sensitivity
At 290 K, a 1 Hz bandwidth gives about −174 dBm: a density reference, not a universal receiver sensitivity.
- Nooelec
NESDR SMArt v5
+10 dBm
- Tools
Power ratio in dB
dB is not absolute power; that requires a reference such as dBm.
- SDRplay
RSP1B
0 dBm continuous; 10 dBm briefly
- Tools
Thermal noise
At 290 K with an ideal receiver, 1 Hz gives about −173.98 dBm.