$59.99 Buy It Now or Best Offer
free,30-Day Returns
Seller Store ham_radio_and_other_things
(1858) 100.0%,
Location: Ocoee, Florida
Ships to: US,
Item: 326293242631
All returns accepted:ReturnsNotAccepted
Features:Adjustable Gain,On/Off Switch
MPN:VA1
Compatible Model:universal
Voltage:9 volt battery
Band:HF
Unit Type:Unit
To Fit:antennas
Compatible Brand:Universal
Unit Quantity:1
Autek Research:Autek Research
Type:Meter
Autek Research RX Vector Analyst Model VA1 This is a used piece of equipment. Ships via USPS Ground Advantage International sales welcomed and ship through the eBay Global Shipping Center. Shipping times will vary if going out of the country. Specified delivery times listed on the ad is to US addresses and will also vary. The eBay Global shipping center is included in that and not the final destination outside of the US. The information listed below was found online and does not reflect what is included in the sale. It is for reference use:The pocket-sized VA1 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, continuously variable from 0.5 to 32 MHz in 6 bands.Like its little brother, the RF1, it measures RF values of true impedance (0-1000 ohms), SWR (1 to 15:1), C (0-9999pF) and L (less than 0.04 to 300 uH). The VA1 adds a true SIGNED RF PHASE DETECTOR to give you the antenna or load R and signed X components, plus all the functions below. Is your load inductive or capacitive? The VA1 tells you instantly. It even tells you the value of series coil(uH) or capacitor(pF) to add to eliminate series reactance and yield lowest SWR. Readout of equivalent parallel R and X yields the parallel X value needed to yield lowest SWR. (All of this is described in the instructions.) The VA1 is not limited to 50 ohm lines. You can select SWR readout on over 10 common feedline impedances from 25 to 450 ohms. The VA1 can even calculate the (series) R and X components of your antenna when measured at the far end of the feedline. So you know the impedance of your antenna even if it’s 100 feet in the air. No 1/2 wave line required. Just measure of calculate the feedline length using the VA1. As you can see, the VA1 makes noise bridges obsolete, and does much more than expensive network analyzers. Don’t be fooled. Other meters claim to be advanced and measure X, but they don’t tell you the sign of X ! They can’t even tell a capacitor from a coil. In contrast, the VA1 instantly displays the sign of X. All parameters are read out digitally for highest accuracy. The VA1 is extremely easy to use. Its large 1/2″ LCD display is not washed out in sunlight..it loves sunlight. And it can cycle between several measured values so you can watch them together. 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 VA1 can even measure the inductance of less than 1/2″ (1 cm) of straight wire! The VA1 is truly pocket size. 4.5 x 2.5 x 1.5 in. The battery pack on other units is actually larger than the entire VA1! The VA1 runs off a single 9 volt battery in a real 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 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.) The illustrated instruction manual discusses many applications in detail, not just instrument operation. Whether you’re an expert or novice, the manual will show you many of the things you can do with the unit. Besides its use by Amateur Radio operators, this unit is in use all over the world at antenna manufacturers, production lines, and laboratories.
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