DU1_CRRb.jpg (JPEG Image, 480x720 pixels) - Scaled (83%) TV Converter Box Coupon Program Website - Online Coupon Application Submission. TT’s Jottings-Blog of VU2SWX » Building Bitx part-1. Bitx 20 is a cute QRP transceiver for 20m.
The original Bitx 20 was developed by Indian engineer Ashar Frahan. The details of the circuit and other details are available at his website. There is an active yahoo group for bitx builders and there are several mods and add-ons developed by bitx enthusiast all over the world. I am already having a Bitx20 and I have made contacts with several European and Russian amateurs on 20m. I have been thinking about building a modified version of bitx for 40m for quite some time now. I will describe my progress along as i build here. Guide Earth Live Discovery Channel. Toroids, Ferrites, Parts, Kits, Toroid King, QRP Erector Set. The NeoSmart Files. AOL. Most Watched Items On ebay Right Now. BITX20 Links. Windows Anytime Upgrade. Application-Specific RF Power Transistors HF.
The KA7OEI FT-817 page. Accessories. Clk18. KR1S Milliwatter Transmitter. KR1S Milliwatt Transmitter May 20, 2008 A simple CW transmitter, driven by a K6ESE DDS.
This version operates on 20 M. Band changing involves swapping out the low-pass filter & T/R board, mounted vertically. AI4WM Amateur Radio Pages. FT-817 Mobile Mounting Bracket from Hamsource.com. FT-817 Mount Designed by N1OLO and N1ZZ.
Features a steel mounting plate with port cut for speaker Articulated mounting arm features indexed pivot points for excellent hold Short and long extensions can be combined or you can mount directly to base Base mount can rotate 360 deg. Mounting plate mounts either to the top or bottom using existing hardware Includes mounting hardware and Allen wrench Redesigned mounting tabs Assembly instructions and Pictures. Search Results. Efficiency of the Z Match. Efficiency of the Z Match Various configurations of the Z Match Tuner are tested for power efficiency over a wide range of antenna load conditions by Lloyd Butler VK5BR (Originally published in Amateur Radio, September 1995) Introduction In past issues of Amateur Radio I have tabled a lot of measurement data on the performance of Z match tuners including the range of load resistance that can be matched.
The question of carrying out a wider range of efficiency tests came up when I received a small QRP (low power) version of the single coil Z match for examination. It has been said that we have already had enough published on the design of the Z match but I felt that the curves demonstrated some important characteristics which should be documented. Method of Measurement. Engineering Software Downloads from Software Vault. Www.bidslammer.com- TxTopper Full Gallon QRP Amp by W5USJ. "Blue" PCB Revision Notes PDF here — Tx/Tuna Topper Revision Notes "Blue" PCB T/R Jumpers and Switch Speed Info — T/R Jumpers and Speed Info Refer also to the revised blue board PCB schematic below.
The prototypes of version 1 were sent to Jim Kortge, K8IQY, for testing and evaluation Results were less than encouraging. Jim did some modeling and suggested circuit changes. The HF Portable Group. Yaesu ft-301 hf transceiver (Auction ID 100826, End Time Jun. 25, 2008 202859) - HamBid - The Ham Radio Auction Site. This file was encoded by the Zend Guard.
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See the schematic full size by cklicking the little picture The 'Rock-Mite' design grew out of my desire to offer a 'one-evening' CW transceiver kit which would be both affordable and easy to construct. It first appeared at 'Lobstercon' - a QRP gathering on the Maine coast- in early July, 2002, where it was provided to all attendees courtesy of Small Wonder Labs and the NorCal QRP club.
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HF Packer-Amp. A Home Construction project for the Radio Amateur.
All quality parts supplied with a comprehensive construction manual on-line. Kickingtires Getting Smart The Smallest Car in Detroit. The Smart ForTwo is just 106 inches long, more than 3 feet shorter than a Mini Cooper.
Park it perpendicular to a Ford Expedition, and its rear end extends just 14.3 inches beyond the Expedition’s side mirrors. In a world of supersized value meals, this one’s a small fry. Under the auspices of DaimlerChrysler and car dealership mogul Roger Penske, Smart plans to sell the ForTwo in hardtop and convertible form in the U.S. starting in early 2008. To show the Smart off at this year’s Detroit auto show, the company simply parallel parked a ForTwo — again and again — between two closely spaced limousines.
The Antenna Farm , Your Two Way Radio Source! Construction Plans for the Model J146. Make sure the piece of angle Aluminum is exactly 5 1/2 inches long. Drill two 1/4" holes on one side, centered to fit the U-Bolt for mounting. On the other surface of the angle, measure in 1/2", 1 7/8" and 5" in from left side and drill 1/4" pilot holes. Enlarge the first of the pilot holes to 1/2" for the antenna mount. Enlarge the second and third of the pilot holes to 11/32" then tap the holes with a 3/8-24 tap or 3/8-16. Finish as required. Cut a piece of the 3/8" Aluminum rod to about 20". Cut a piece of the 3/8" Aluminum rod to about 60". SEO Farm - Gateway, Batteries for Laptops.
UI-VIEW by dxzone. SDR Forum - Software Defined Radio Forum. Willkommen! Online industrial distribution. DDRR Antenna Simulation. The DDRR (Direct driven ring radiator) was invented by Dr. Boyer from Northrop, for military applications in the 50s. It stayed classified until Dr Boyer published an article titled "Hula hoops antennas" in Electronics (Jan 11, 1963).
"73 Magazine" published also a two part article from Dr. Boyer titled "Surprising Miniature low band antenna". 039;s musing on technology 80m Transceiver in an Altoids tin Pixie 2. PAC-12 Antenna - mobile multiband Resource detail. Brooke's Electronics page. © Brooke Clarke 2000 - 2007 Personal Interest Professional Rack and Stack Systems. Gateway Games by WildTangent. Portable lithium ion battery pack Battery Power Station weighs only 1 pound. This battery pack consists of a 44 watt hour lithium ion battery assembly and three DC/DC converters. The first DC converter allows the pack to be charged with a wide range of voltage inputs. The second allows the pack to deliver a user selectable voltage to run equipment requiring 5volts to 19+volts. The third DC converter supplies a steady 5 volts to a USB port for charging cell phones, Ipods, and other USB charged equipment.
All this is built into the sleek black battery case. Welcome to Windows Internet Explorer Beta 1.