One-Tube Regenerative Shortwave Receiver
30V N-Channel MOSFET General Description Product Summary VDS I D (at V GS =10V) 30A R DS(ON) (at V GS =10V).
Planner 5d tutorial. Welcome to Planner 5D. An easy-to-use home builder that uses drag-and-drops functions. Build walls, drop furniture, edit sizes and colors, add design details and more. When you’re finished, you can create a realistic rendering of your interior and exterior! Use Planner 5D for your interior design needs without any professional skills HD Vizualizations Use the Snapshots feature to capture your design as a realistic image - this adds shadows, lighting and rich colors to make your work look like a photograph!
Mike Tuggle, WY3B
AO6418 Datasheet, AO6418 PDF, AO6418 Data sheet, AO6418 manual, AO6418 pdf, AO6418, datenblatt, Electronics AO6418, alldatasheet, free, datasheet, Datasheets, data. 6418 SL002 Alpha Wire Multi-Conductor Cables 22AWG 3PR SHIELD 500ft SPOOL SLATE datasheet, inventory & pricing. Onenote on google drive download. Molex Barrier Terminal Blocks SR BTS CS PC 18ASY P datasheet, inventory & pricing. AON642830V N-Channel MOSFET General Description Product SummaryVDS30VThe AON6428 uses advanced trench technology toprovide excellent RDS(ON), low gate charge.This device is ID (at VGS=10V) 43Asuitable for use as a high side switch in SMPS and RDS(ON) (at VGS=10V) 8.3. Aon6424.pdf Size:390K aosemi.
This receiver was inspired by a similar one that used a dual gate MOSFET.
(Scroll down in the thread to view the specifics of that set.) The MOSFET set was very prone to hand/body capacitance effects, so this tube version using a surplus BC-221 tuning capacitor with 50-to-1 dial drive was tried. Here’s the schematic:
The subminiature 1AD4 was recommended by Greg Carl (“oL-wooD”) of Flat-‘n-Lo, California as a bustier substitute for the widely used flea-power 6418 submini. While 1AD4 filament current (100 mA) is higher than that of a 6418 (10 mA), its transconductance (gain) is also proportionately higher. So, D-cells power the filament instead of AA’s used for a 6418. The tank tuning coil was wound on a low mu, high Q R40C1 ferrite rod. The number of turns was adjusted to cover from 60 to 25 meters (4.2 to 12.3 MHz). My thought on the tickler was to wind as many turns as I could get on the sliding tube. Ip mask for mac. If too many turns, I’d slide the tickler away from the main winding. As it turns out the tickler works nicely up near the main winding. How’s that for scientific reasoning ? I did the same for the A-G link on the other end.
I was pleasantly surprised when it worked right off the bat. That doesn’t happen often for me. Some body-capacitance effects were still there, but MUCH reduced from the MOSFET SW set. The BC-221 metal front panel probably helps with that problem. Screen grid regeneration control is exceptionally smooth. It eases seamlessly into and out of oscillation.
6418 Mosfet N
After a quick calibration using six points from a signal generator, I set the dial to where the calibration said 8420 kHz should be. Bingo ! There was WLO (Mobile, AL) bigger than life. That’s when I really began to like this radio. DX possibilities are “worldwide.” The following distances have been heard:
The antipodal (half globe) distance is 12,346 miles. Of course, these are high power (100 kW+) operations, but I’m starting to hear lower power (10 kW +/-) stations in South America, notably Brazil and Colombia.
The question arose early on: How well does the set perform on just the ferrite rod coil as a loop antenna ? Turns out, not very well. It was just too weak to make out anything. The MOSFET version wasn’t all that great without an outside wire, either. Both sets need that outside wire to the world. However. for its mellow behavior, I’m beginning to think the 1AD4 tube version is my number one SW set. It’s nice to be able to turn it on any time day or night and look to hear a whole new adventure.
6418 Mosfet Gate
Back to the Birmingham Group Radios.
6418 Mosfet Pdf
Comments are closed.