Note
The pocket-sized RF Analyst is designed to check and adjust antennas, feedlines, and RF networks. It includes a microprocessor, A/D converters, and a low-power "transmitter" with 4 digit frequency readout.
All versions are similar in appearance.
VA-1: 0.5 to 32 MHz in 6 bands.
RF-1: 1.2 to 35 MHz in 5 bands.
RF-5: 35 to 75 MHz and 138 to 500+ MHz in 3 bands.
The RF-1 and VA-1 measure RF values of true impedance (0–2000 ohms), SWR (1 to 15:1), C (0-9999 pF), and L (less than 0.04 to 300 uH). The VA-1 adds a true SIGNED RF PHASE DETECTOR to give you the antenna or load R and signed X components.
The RF-5 is tuned up or down in frequency by holding down the "UP" or "DOWN" buttons, and with a fine tuning knob. In addition the RF-5 includes an INSTANT SWR mode which finds the frequency of lowest SWR or Z automatically. Simply hold down the UP/DOWN buttons together. The RF-5 microprocessor scans across the entire band and finds the lowest SWR in about 5 seconds, then tunes the unit to this frequency.
All parameters are read out digitally for highest accuracy. The RF Analyst is extremely easy to use. Its large 1/2" LCD display is not washed out in sunlight. And it can cycle between several measured values so you can watch them together.
With the RF-1 and VA-1, L and C are measured at the RF frequency of interest, not at 1 KHz or 100 KHz as on other meters. So the effects of stray capacitance, toroid parameters, and other frequency-dependent factors are taken into account. The RF-1 can even measure the inductance of less than 1/2" (1 cm) of straight wire.
The RF Analyst runs off a single 9 volt battery in a battery compartment on the back with a pushoff cover, similar to a TV remote control. A standard 9 V alkaline battery has a life of about 5–10 hours, and can be replaced in seconds. In addition, the unit turns itself off after about 20 minutes if no buttons are pushed. (The auto-off feature can be disabled if desired.)
