THRULINE ® RF Power Sensors 4100 series 50 ohms nominal
Bird 4100 series power sensors were custom-designed for incorporation into transmitter and test equipment circuits at the time of manufacture. Individual models are not stocked but are designed to customers’ specific power frequency range and read-out requirements.
The sensor delivers direct currents proportional to forward and reflected power (CW, FM) or acts as an envelope detector (AM, SSB, PULSE). It consists of a length of 50-ohm line section, typically with two fixed coupler assemblies – one for each direction of power flow. The two dc outputs can be displayed on individual meters, switched on one two-range meter, or used with a model 3170 or 3128 WATTCHER.
The sensors listed below are the most popular types.
| 4100 Series THRULINE@ RF Sensors | ||||||
| STANDARD UNITS (CATALOG NUMBERS) | ||||||
| Power Ranges (Fwd/Refl) |
Frequency Bands (MHz) | |||||
| 2-30 | 25-60 | 50-125 | 100-250 | 200-500 | 400-1000 | |
| 5/5W | 4A5 | 4B5 | 4C5 | 4D5 | 4E5 | |
| 10/10 | 4H10 | 4A10 | 4B10 | 4C10 | 4D10 | 4E10 |
| 25/10 | 4H25 | 4A25 | 4B25 | 4C25 | 4D25 | 4E25 |
| 50/10 | 4H50 | 4A50 | 4B50 | 4C50 | 4D50 | 4E50 |
| 100/25 | 4H100 | 4A100 | 4B100 | 4C100 | 4D100 | 4E100 |
| 250/50 | 4H250 | 4A250 | 4B250 | 4C250 | 4D250 | 4E250 |
| 500/100 | 4H500 | 4A500 | 4B500 | 4C500 | 4D500 | 4E500 |
| 1000/250 | 4H1000 | 4A1000 | 451000 | 4C1000 | 4D1000 | 4E1000 |
| MODEL | FREQ. BAND MHz | FORM | C1 | C2 | C3 | DC LOAD Ohms | DC OUTPUT | POWER FORWARD | POWER REFLECTED |
| 4143Z | 1.5-30 | 1 | F(HN) | F(HN) | FTC | 1400 | 30uA | 2000W | 50W |
| 4141N | 2-30 | 1 | F(N) | F(N) | MS | 1650 | 50uA | 200W | 15W |
| 4141X | 2-30 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 1000W | 250W |
| 4142B | 2-30 | 1 | F(N) | F(UHF) | F(BNC) | 1000 | 200uA | 1200W | 1200W |
| 4142S | 2-30 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 1000W | 25W |
| 4143K | 2-30 | 1 | F(N) | F(N) | FTC | 1520 | 100uA | 1500W | 1500W |
| 4144-115 | 2-30 | 4 | F(C) QC | F(C) QC | MS | 1400 | 30uA | 5000W | 1000W |
| 4144R | 2-30 | 1 | OT | OT | FTC | 1050 | 100uA | 1500W | 250W |
| 4144T-1 | 2-30 | 1 | F(N) | F(N) | FTC | 2200 | -100uA | 200W | 100W |
| 4144T-2 | 2-30 | 1 | F(N) | F(N) | SPECIAL | 2200 | -100uA | 200W | 100W |
| 4145J | 2-30 | 1 | F(N) | F(N) | FTC | 10000 | 0.7V | 150W | 15W |
| 4144-120 | 2-30 | 1 | F(N) | F(N) | MS | 1400 | 30uA | 1000W | 250W |
| 4H10 | 2-30 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 10W | 10W |
| 4H25 | 2-30 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 25W | 10W |
| 4H50 | 2-30 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 50W | 10W |
| 4H100 | 2-30 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 100W | 25W |
| 4H250 | 2-30 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 250W | 50W |
| 4H500 | 2-30 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 500W | 100W |
| 4H1000 | 2-30 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 1000W | 250W |
| 4144D | 2-30 | 4 | F(HN) QC | OT QC | FTC | 1400 | 30uA | 6000W | 1000W |
| 4145C | 3.5-30 | 1 | OT | F(HN) | FTC | 1960 | 25uA | 2500W | 250W |
| 4153G | 9.9-50.5 | 1 | F(N) | F(N) | FTC | 10000 | 100uA | 15/75W | 15W |
| 4151R | 10-50 | 1 | F(TNC) | F(N) | FTC | 2500 | -0.3V | 10W | 10W |
| 4144Y | 13.56 | 1 | F(N) | F(N) | FTC | 1960 | 25uA | 1000W | 100W |
| 4145A | 13.56 | 1 | F(N) | F(N) | FTC | 1960 | 25uA | 500W | 100W |
| 4151-100 | 20-40 | 1 | F(N) | F(N) | FTC | 2500 | 0.3V | 10/50W | 10W |
| 4152-X | 25-60 | 1 | F(BNC) | F(BNC) | FTC | 1400 | 30uA | 50W | 10W |
| 4A5 | 25-60 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 5W | 5W |
| 4A10 | 25-60 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 10W | 10W |
| 4A25 | 25-60 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 25W | 10W |
| 4A50 | 25-60 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 50W | 10W |
| 4A100 | 25-60 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 100W | 25W |
| 4A250 | 25-60 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 250W | 50W |
| 4A500 | 25-60 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 500W | 100W |
| 4A1000 | 25-60 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 1000W | 250W |
| 4152H | 30-76 | 3 | F(SMB) | F(SMB) | FTC | 5000 | 1V | 10W | 10W |
| 4152Y | 30-76 | 1 | F(BNC) | F(BNC) | FTC | 1500 | 100uA | 100W | 100W |
| 4153-050 | 30-76 | 1 | F(N) | F(N) | M.S. | 1400 | 30uA | 100W | 25W |
| MODEL | FREQ. BAND MHz | FORM | C1 | C2 | C3 | DC LOAD Ohms | DC OUTPUT | POWER FORWARD | POWER REFLECTED |
| 4153H | 49.5-202 | 1 | F(N) | F(N) | FTC | 10000 | 100uA | 75/15W | 5W |
| 4151P | 50-200 | 1 | F (TNC) | F(N) | FTC | 2500 | -0.3V | 10W | 10W |
| 4B5 | 50-125 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 5W | 5W |
| 4B10 | 50-125 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 10W | 10W |
| 4B25 | 50-125 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 25W | 10W |
| 4B50 | 50-125 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 50W | 10W |
| 4B100 | 50-125 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 1000W | 25W |
| 4B250 | 50-125 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 250W | 50W |
| 4B500 | 50-125 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 500W | 100W |
| 4B1000 | 50-125 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 1000W | 250W |
| 4151-070 | 65-175 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 100W | 10W |
| 4167P | 100-156 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 10W | 5W |
| 4C100SP | 100-250 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 100W/100W | 25W |
| 4161-050 | 100-250 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 25W | 25W |
| 4161-100 | 100-200 | 1 | F(N) | F(N) | FTC | 4900 | 50uA | 1000W | 10W |
| 4C5 | 100-250 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 5W | 5W |
| 4C10 | 100-250 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 10W | 10W |
| 4C25 | 100-250 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 25W | 10W |
| 4C50 | 100-250 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 50W | 10W |
| 4C100 | 100-250 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 100W | 25W |
| 4C250 | 100-250 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 250W | 50W |
| 4C500 | 100-250 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 500W | 100W |
| 4165M | 100-250 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 500W | 500W |
| 4C1000 | 100-250 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 1000W | 250W |
| 4164R | 100-250 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 100W | 100W |
| 4168R | 108-118 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 5W | 0.25W |
| 4151D | 108-118 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 100W | 5W |
| 4162C | 108-400 | 2 | F(BNC) | F(BNC) | FTC | * | * | 150/50W | - |
| 4162M | 108-401 | 2 | F(BNC) | F(BNC) | BPC | 2400 | * | 150/100W | 25W |
| 4163Z | 108-402 | 3 | F(SMB) | F(SMB) | FTC | 2000 | 100uA | 16W | 8W |
| 4167Y | 116-150 | 2 | F(TNC) | F(TNC) | F (SMC) | 5000 | -1V | 12W | 3W |
| 4167Z | 116-150 | 2 | F(N) | F(N) | F (SMC) | 5000 | -1V | 60W | 15W |
| 4165-050 | 116-152 | 1 | F(N) | F(N) | MS | 1400 | 30uA | 100W | 25W |
| 4168-L | 150-160 | 1 | F(N) | F(N) | FTC | 1225 | 100uA | 500W | 50W |
| 4162-180 | 150-512 | 1 | F(TNC) | F(N) | FTC | 2500 | -0.3V | 10W | 10W |
| 4167-E | 198-505 | 1 | F(N) | F(N) | FTC | *985 | 100uA | 75/15W | 15W |
| 4D100SP | 200-500 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 100W/100W | 25W |
| 4161-045 | 200-500 | 1 | M(N) | F(N) | FTC | 1400 | 30uA | 10W | 10W |
| MODEL | FREQ. BAND MHz | FORM | C1 | C2 | C3 | DC LOAD Ohms | DC OUTPUT | POWER FORWARD | POWER REFLECTED |
| 4162-210 | 200-500 | 1 | F(BNC) | F(BNC) | FTC | 1400 | 30uA | 25W | 25W |
| 4162V | 200-500 | 1 | F(TNC) | F(N) | FTC | 2500 | -0.3V | 10W | 10W |
| 4192-010 | 200-500 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 50W | 50W |
| 4D5 | 200-500 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 5W | 5W |
| 4D10 | 200-500 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 10W | 10W |
| 4D25 | 200-500 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 25W | 10W |
| 4D50 | 200-500 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 50W | 10W |
| 4D100 | 200-500 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 100W | 25W |
| 4D250 | 200-500 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 250W | 50W |
| 4D500 | 200-500 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 500W | 100W |
| 4D1000 | 200-500 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 1000W | 250W |
| 4162D | 220-405 | 1 | F(BNC) | F(C) | SPECIAL | 5000 | 100uA | 40W | 40W |
| 4166-100 | 225-300 | 1 | F(TNC) | F(TNC) | FTC | 2000 | 1.0V | 500W | - |
| 4163D | 225-400 | 3 | F(MB) | F(MB) | FTC | 5100 | 1.0V | 10W | 10W |
| 4163-100 | 225-400 | 3 | F(SMA) | F(SMA) | FTC | 10000 | -1.0V | 10W | - |
| 4166D | 225-400 | 1 | F(BNC) | F(BNC) | FTC | 5000 | 1.0V | 100W | 25W |
| 4166C | 225-400 | 1 | F(C) | F(C) | FTC | 5000 | 1.0V | 1000W | 250W |
| 4167W | 225-400 | 2 | F(TNC) | F(TNC) | SMC | 5000 | -1.0V | 12W | 3W |
| 4167X | 225-400 | 2 | F(N) | F(N) | SMC | 5000 | -1.0V | 60W | 15W |
| 4165N | 225-400 | 1 | F(N) | F(N) | F(BNC) | 10000 | 1.0V | 70W | - |
| 4168ES | 225-400 | 1 | F(SMA) | F(SMA) | FTC | 10000 | -1.0V | 50W | 10W |
| 4168F | 225-400 | 4 | F(LC) QC | F(LC) QC | FTC | 520 | 200uA | 2000W | 200W |
| 4169L | 225-400 | 1 | F(N) | F(N) | FTC | 1000 | 100uA | 1500W | 1500W |
| 4169M | 225-400 | 1 | F(N) | F(N) | FTC | 1000 | 100uA | 150W | 150W |
| 4165-060 | 225-400 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 100W | 25W |
| 4165-070 | 225-400 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 1000W | 250W |
| 4E5 | 400-1000 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 10W | 5W |
| 4E10 | 400-1000 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 10W | 10W |
| 4E25 | 400-1000 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 25W | 10W |
| 4W50 | 400-1000 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 50W | 10W |
| 4E100 | 400-1000 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 100W | 25W |
| 4E250 | 400-1000 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 250W | 50W |
| 4E500 | 400-1000 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 500W | 100W |
| 4E1000 | 400-1000 | 1 | F(N) | F(N) | FTC | 1400 | 30uA | 1000W | 250W |
| 4167M | 470-890 | 1 | F(N) | F(N) | * | RF coupIer | 100W | 100W | |
| 4167F | 495-1010 | 1 | F(N) | F(N) | FTC | *985 | 100uA | 75/15W | 15W |
| 4162W | 500-1000 | 1 | F(TNC) | F(N) | FTC | 2500 | .o.3V | 10W | 10W |
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