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Palstar BT1500A 1500 Watt Double L Balanced Antenna Tuners
Palstar BT1500A 1500 Watt Double L Balanced Antenna Tuners are the only 1,500 watt, double-L network antenna tuners on the market today. BT1500A tuners feature two tandem mounted, precision ceramic roller inductors for a truly balanced tuner. A dual section capacitor provides the correct amount of capacitance for both low-band and high-band operation and is relay-switchable between the input and output side to provide the maximum possible range of impedance matching. So, why buy a balanced tuner? Joel Hallas described the problem many antenna tuners experience in his September 2004 QST article on balanced tuners. He wrote, "Unfortunately, the typical random sized center-fed antenna with random length ladder line feed has an impedance at the feed point that varies dramatically with frequency. The result can be heating and loss (and occasional damage) at the balun ... the classic solution has been the use of an inherently balanced tuner." In his QST article, Joel Hallas was reviewing Palstar's former model AT1500BAL as a high-power solution for amateur operators looking for a balanced tuner. Since that review, the engineers at Palstar have reengineered their AT1500BAL tuner inside and out and reintroduced it as their BT1500A. Palstar BT1500A 1500 Watt Double L Balanced Antenna Tuners feature two precision ceramic-body roller inductors mounted in tandem. The massive dual-section capacitor can be switched, with a front panel controlled relay, from the input side to the output side of the tuning network to provide maximum flexibility in tuning range. Another front panel controlled relay switches the two sections of the capacitor for high and low-band coverage. Plus, as a final touch to the BT1500A, Palstar's engineers added the peak and peak hold dual cross-needle metering found in our popular PM2000A wattmeter. Here are the specifications on these great double balanced antenna tuners; model BT1500A: -- Power rating: 1500 watts PEP -- Relay switched Hi/Low-Z impedance range -- Relay switched Hi/Low-C variable capacitor -- Total inductance of 44uH for greater impedance range on 160m -- Matching range: 160m - 20m (2500+/-j2500), 10m - 15m (1000+/-j1000) -- Two tandem-mounted ceramic body roller inductors - silver plated wheel and wheel shaft -- One turns counter and one crank handle drive both inductors -- Low minimum capacitance, dual-section variable capacitor (960pF/65pF @ 4.5kV) with Vernier drive for smooth accurate tuning -- Ferrite 1:1 input balun, required on double balanced tuners -- Peak and peak hold dual cross-needle metering (1-2 sec hold) with backlighting -- Cabinet metalwork is heavy 11 gauge (0.090 in. thick) Iridite®-coated aluminum; powder coated front panel and top cover Note: For additional information, please look at the files under the "Documentation" tab. Please remember that Palstar BT1500A 1500 Watt Double L Balanced Antenna Tuners are highly-specialized tuners, designed to do only one thing--tune balanced-line feed antennas--and do it well. Order yours from DX Engineering!
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$1,095.99
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Palstar PM2000A Watt Meters
Palstar PM2000A Watt Meters measure and display SWR, forward power up to 2,000 watts, and reflected power simultaneously on a dual movement meter system that operates in the frequency range from 1.8 MHz to 60 MHz. Accuracy of the readings is assured with the PM2000A shielded directional coupler. These backlit meters, which can display average or peak power readings, now have a convenient peak hold function and a push-button selection for 300 watt and 2,000 watt ranges. PM2000A Watt Meters are the improved version of Palstar's best-selling WM150 Wattmeters. When QST tested the PM2000As' predecessor, they found it to be the only wattmeter with true Active Peak Reading. The PM2000As are one of the new generations of watt meters from Palstar. All of the features of the WM150 are integrated into PM2000A meters, now with increased power capability up to 2kW and two-second peak hold metering. To top it off, just like on Palstar tuners, the PM2000A meters have an 11 ga. (0.090 in.) iridite-treated aluminum case with a powdercoated front panel and top cover. Rear panel SO-239 (UHF female) connectors are provided for coaxial cable RF input and output, and a 2.1mm connector provides input for 12 Vdc at less than 200 mA to run the meter circuit and backlight. Note: For additional product information, please look at the files under the "Documentation" tab. Simple to hook up and use, Palstar PM2000A Watt Meters take the guesswork out of your inline RF power and SWR measurements. Order yours from DX Engineering today!
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$349.99
$297.49