ameritron 811 hd

How to Make a Great 9:1 RX Transformer - There are lots of good designs for matching transformers for receiving antennas. Make it yourself it's cheap and easy, and very high performance. This is the design used in the TRX-9 transformers.

How to build the K9AY loop - This document provided by AT technologies explains how to build the K9AY loop receiving antenna.

Beverages on 40 Meters - Gary Breed, K9AY experience with beverages on 40 meters

Water tuned loop antenna - A QRP 900 grams hydraulic tuned small magnetic loop antenna by PY1AHD Alex.

Soft copper Tube Loops - Air conditioning soft copper tubes are perfect for loop construction. If you want to try a loop you must have an air variable capacitor or a vacuum variable capacitor. Article by PY1AHD

Balcony and pedestrian mobile motor tuned loop - This antenna was designed to meet the requirements of a light body worn small magnetic loop covering all the frequencies continuously from 7 MHz to 29.4 MHz

The Thick Loop - The performance of a small magnetic loop can be improved constructing it larger, thicker or both. The antenna is covering from 12 Megahertz to 32 megahertz and adding a 156 Pico farads ceramic capacitor it resonates on the 40 meters band. by PY1AHD

The Light Loop - A small magnetic loop ready for a hand held walk and talk operation by PY1AHD

Pocket Loop Antenna - The Pocket Loop is a small magnetic loop antenna designed for a carry anywhere operation, it disassembles in 33 centimeters pieces that can be carried even on an attaché handbag.

Patch antenna for APT - The patch, or microstrip, antenna has become a common workhorse for the microwave spectrum from about 1 GHz to tens of GHz. This type of antenna consists of two conducting layers separated by a dielectric to form an extended capacitor by WlHDX

K8zhd History of radio and television - Vintage television and radio stuff

WR2ABB Mount Beacon ARC - The gateway to amateur radio in the Hhdson valley

Amateur Exam Question Pools - ARRL page on amateur radio exam questio pools, withdrawn questions and question pool schedule

Ameritron manuals - Manuals section for the Ameritron HF amplifiers mostly in PDF format

Ameritron AL-811 manual - Ameritron AL-811 owner's manual pdf file

Memphis Amateur Electronics - Carry hundreds of ham radio products including amateur radios from Alinco, Icom, Kenwood, and Yaesu, plus ham radio products from MFJ, LDG, Diamond Antennas, Hustler, Ameritron, Astron power supplies, and books of all kinds

NTF communications - Canadiam ham radio dealer for Alinco, Alpha Delta,Bencher, Ameritron,Anli,Butternut,Comet,Daiwa,Cusfcraft,Icom,Kantronics,Laha,Vectronics,MFJ,Yaesu products

Cupeles Electronics LLC - Two way radio communication services for Kenwood Icom Yaesu radio and ameritron drake cliperton henry heathkit amp yaesu kenwood linear amplifiers based in Harrisburg, PA by WB3M

APLT Communications - Italian ham radio dealer for Icom Array Solutions hyt mfj force12 heil-sound yaesu spiderbeam pkw ameritron acom palstar.

TestMart - Dealer of popular test equipment products by aeroflex, agilent, Anritsu, fluke, rohde & schwarz, tektronix xantres glacier computer caltron

Modifications to the Ameritron AL-1200 Amplifier - This page describes two modifications W8WWV made to his AL-1200 amplifier. The mods were obtained from Ameritron, so they are official.

Ameritron AL-1200 to gs35b Conversion - The Ameritron AL-1200 Amplifier is in current production. In its factory configuration it uses a single 3CX1200A7 (triode) tube, grounded grid configuration. Re-tubing the AL-1200 with a GS-35b with success.

VA3TO Programmable Beacon Keyer - This article describes a simple programmable Morse Code Continuous Wave (CW) beacon keyer that can be built for less than $15

HDR-2005 Receiver Workbench - Homebrew HF receiver with quadrature sampling detector QSD (aka Tayloe Mixer)

Homebrew Butterfly Capacitor - Butterfly capacitors are hard to find, expensive but they can be home made by PY1AHD