"To create something
genuinely new, you have to start again....and disconnect from the past.
Repetitive engineering becomes incremental if nothing is changed. The ability to change opens up a new world of design"
Preliminary RF Deck & Power Supply layout.
Power supply section
will be below the RF deck. Tube plenum will be air-charged from below.
Our custom variable inductor is nearly complete and ready for testing.
This massive inductor is mandrel wound here in Somerset, PA with 28 turns of 1/16" x 3/8" beryllium copper at 5/16" center-to-center turn spacing, and with an outside diameter of 4.750". All major components will be silver plated.
Bronze rod bearings are used in both ends
of the center shaft for long life. These bearings have successfully passed
This entire inductor assembly measures 12" (L) x 6" (W) x 6" (H).
The inside contactor wheel is 1.250" OD, and precision machined as a one-piece component from tempered beryllium. TD04 grade beryllium exhibits excellent 'spring' qualities, and this design will have significant surface contact on both sides of the coil with no chance of arcing, even as the coil accumulates dust & dirt over time.
UPDATE - July 29, 2012
Our prototype toroidal HV transformer. At 79 LBS, this XFMR is designed for 100% Continuous Commercial Service (CCS) at full rated output. Primary taps allow operation from 200VAC to 250VAC with an internal auto-sensing circuit. This design offers very simple mounting using a single 1/2" diameter center bolt, and provides 97% efficiency.
UPDATE - July 13, 2012
We selected a 91 CFM blower (dual blower design) and have completed our own internal testing both for air flow (CFM) and air pressure (in H2O). We're focusing on heat management, and this design delivers about 40% more air than is required for our US model. A tachometer / RPM output is included for monitoring.
UPDATE - July 12, 2012
Our new vacuum variable Tune & Load capacitors.
Autotune 160 - 10 meter amateur coverage
Only once in a great while will a manufacturer start with a clean sheet of paper and design from the ground up a new amplifier. Most amplifiers are a follow-on design from a previous model which nibbles around the edges of the basic design to add a few new items to the old design.
The Dedicated RF revolutionary new HF / VHF amplifier uses a state of the art microprocessor for all operational and diagnostics functions. The amplifier RF input network senses the frequency and automatically tunes the proprietary variable Q input Pi network for proper tube matching within a fraction of a second. This maintains flat input VSWR and maximum RF transfer efficiency to drive the 3CX1500A7 triodes while reducing harmonic output from the amplifier.
The dual input means the contester or casual operator can use multiple transceivers to drive the amplifier - including your HF or 6 meter transceiver of choice. The microprocessor controls all functions in the amplifier including critical warm up functions, temperature-controlled power-down functions, band limiting, bias control, voltage switching, band switching, keying and diagnostics. In addition, the station control can be accomplished with a remote touch control screen module that can be remoted by a fiber optic cable or mounted to the amplifier itself for desktop use. In addition to the touch screen, the amplifier can also be operated from a desk top or laptop computer, being compatible with Windows or Macintosh OSX operating systems.
The unique design of the constantly variable inductor means that the ideal, most efficient impedance match from the tubes to the antenna load can be made. Vacuum variable tune & load capacitors reduce the chance of capacitor arc over and maintain the best circuit Q for power transfer. Power losses in the efficient vacuum variable capacitors is minimized for more efficient operation and reduced heating.
In addition to increased efficiency, the harmonic output is greatly reduced with higher Q tank circuit, and the built-in addition of low pass filter circuits for HF and 6 Meters. The HV power supply uses a custom Torodial AC transformer for more efficient AC step-up with a full wave bridge for DC HV generation. Auto-sense AC primary voltage is standard for US & many foreign voltages. AC ripple is reduced with ten (10) low ESR 500v capacitors.
Our amplifier utilizes an upper / lower split-level design, where the power supply is located below the RF section, with the lower-mounted dual-blower charging the tube plenum above for quiet operation. Intake filtered air is circulated through all parts of the amplifier for efficient cooling.
Commercial units will be available firmware-unlocked
for full spectrum coverage.
Website & new
products under development....please QRX
All amplifiers will be 100% American Built & Tested
Circuit Board assemblies will be populated in the US
Toroidal HV Transformers will be supplied
from a US Manufacturer
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