73 RADIO ROW MARKETPLACE
With the increasing popularity of vintage transmitter operation, here’s a Grid Block Keying Adapter that allows CW operators who love their solid-state keyers to use them with many tube-based rigs with low negative voltage keying. It was produced in the late 1990s by Jackson Harbor Press with the caveat that it will not work with rigs having cathode keying (positive high voltage). If you have a vintage, commercially-manufactured transmitter or transceiver and aren’t sure how it is keyed (grid block vs. cathode), Google the name and make of the rig. The specifications should tell you which keying circuitry is in your radio. The kit offered here is in its original packaging and includes documentation. It is suitable for beginners with some soldering experience. This version of the Jackson Harbor Press Grid Block Keying Adapter is believed to be no longer in production.
The late Armond Noble, N6WR, publisher of WorldRadio Books described “The Little Pistol’s Guide to HF Propagation” (peperback) as one of Robert R. Brown, NM7M’s (SK) best works. “ . . . a true expert (who writes so we can understand it) regarding the when, why and how radio waves really get from one spot to another. (Bob) brings to this task the knowledge of a true scholar and the ability to communicate.” Rare and no longer in print, reviews by propagation neophytes have been glowing. For example: “I find the Little Pistol’s guide" one of the most complete sources of HF information before upgrading to books full of math. It gives a much better picture of HF propagation than the ARRL Handbook's PROPAGATION.” Being 21 years old, it is in excellent condition. It is priced from $30 to $60 online. It’s a real bargain here.
The Radio Society of Great Britain describes Giles Read, G1MFG’s “HF Antennas for Everyone” (2010) as a “deliberate mix of the traditional (antenna) and more recent designs. Sub divided into broad sections including horizontal, vertical and loop antennas, there is much variety to be found here. ‘HF Antennas for Everyone’ shows that no matter the size of the available space you will find antenna designs that will help you get your signals in and out. Feeders are also not forgotten – an often overlooked topic. This book even contains a section on Stealth antennas that are either essentially invisible or disguised as something quite different.” This book is in perfect condition.
Here is a great trail-friendly field accessory: the All Weather Radio Log Book for Portable / Mobile operators. From Andrew Stevens Associates ASA) in 2007, it is waterproof , rugged and almost indestructible. You can write in it with pens, pencils, markers – just about anything. Once the QSO data is logged, your notes are there forever. No running ink or erasure. There are 7 QSOs per page and about 50 pages. We’ll do the arithmetic: Room for about 350 contacts. The All Weather Radio Log Book measures just 5-inches by 3-inches. It is three-eighths of an inch thick and spiral bound. It will easily fit in your hip pocket. Entries include DATE, TIME ON, CALL , FREQ, TIME OFF AND COMMENTS. This is one-rugged amateur radio log that will is the essence of utility for the radio amateur who likes to operate outdoors.
“VHF/UHF Handbook” (1998) is a Radio Society of Great Britain (RSGB) publication edited by Dick Biddulph, G8DPS – an excellent desk reference for the new radio amateur and the seasoned VHF/UHF veteran. Just getting started on the frequencies above 50 MHz? This book is an excellent place to start. VHF/UHF propagation? Equipment? Antennas? All are covered. Also: EMC (ElectroMagnetic Capability), late ‘90s Data Modes, ATV, Satellites, Repeaters, Test Gear and Station Accessories. There are circuits for experimentation, VHF/UHF antenna pattern plots, a smorgasbord of station accessories and much more. It is beautifully indexed, making zeroing in on a topic of interest a snap. The cover has a bit of wear along its edges. But otherwise, this copy is in like-new condition. Here is the VHF/UHF operator’s chance to get this excellent RSGB publication without having to deal with shipping charges or money exchange.
We’d never seen this one before, but “Using Your Meter”, by Alvis J. Evans, is a really nice desk reference as a tutorial on how to get the most out of your digital volt meter (DVM) and Volt-Ohm Meter (VOM) multi-testers. It covers the basics in both theory and practical applications, focusing on voltage, resistance and current. An accompanying photograph shows the breadth of its contents. And, as you’ll see, it describes uses for the radio amateur and DIY’ers who delve into home appliances, lighting, automobiles and tool-control circuits. This copy is in like-new condition and is 176 pages in length. Evans is a former associate professor of electronics at Tarrant College in Fort Worth, Texas.a
Everything you need to know about antennas – from wires to beams to transmission lines to fixed and portable systems and a ton more - can be held in one hand with this soft-cover 22nd edition of the ARRL’s renowned “Antenna Book for Radio Communications”. Except for some scratches, a rough edge and a dog ear on its cover, this book is in like-new condition. Due to its unorthodox page-numbering convention we’d only be guessing at the page count. But in its large format it weighs a bit over four pounds. (Remember: FREE SHIPPING). Its table of contents, shown in accompanying photographs, covers almost three pages. If you’d like to have all of your antenna-reference data consolidated in one place, perhaps this is your answer. Accompanying CD is not included.
The Small Wonder Labs FREQ-Mite is a PIC-based Morse read-out frequency counter that was produced by Dave Benson, K1SWL, in the late 1990s. It is an excellent accessory for transceivers with analog tuning. Its maximum counting frequency is 32.76 MHz – covering all of the high-frequency amateur radio bands – 80, 40, 20, 17 and so on. Its accuracy is +/- 1.5 kHz to 25 MHz and +/- 2 kHz at 32 MHz. Send a query asking what your frequency is and it sends Morse audio via an 800 Hz tone. The Morse speed is adjustable from 13 to 26 words-per-minute. The brains of the FREQ-Mite is a PIC 16C621 chip, programmed by Small Wonder Labs. The kit includes all parts and a top-quality printed circuit board. This is a through-hole parts kit. There are no surface-mount components. The package has never been opened and includes a six-page assembly and operations manual. Long out of production, the FREQ-Mite is a rare find, indeed.
This publication of the American Radio Relay League came out in 2011 and is every bit as relevant today as it was six years ago. “Small Antennas for Small Spaces” is a collection of limited-space antenna ideas from well-known amateurs, including the trail-blazing Folded Skeleton Sleeve 40 and 20 Meter Dipole Antenna by QST Technical Editor Joel Hallas, W1ZR. The book is jammed with information including how to get started, antenna configurations, feed lines, SWR, operating modes and RF safety. Also design ideas and projects for VHF and HF antennas you can use inside your home and put together in a weekend, outdoor HF antennas for any property, dipoles, inverted Ls, end-fed wires, loops, verticals, temporary antennas, outdoor antennas for VHF and beyond, compact omnidirectional, directional antennas you can install just about anywhere, and other creative solutions. This copy is in excellent condition – like new.