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The New England QRP Club NEScaf is an excellent switched capacitive audio filter. It is designed to be simple to use. It has two panel-mounted controls — a single center-detent potentiometer that sets the center frequency of the filter’s bandpass (default value settable between ~415Hz and ~1kHz), and a dual-ganged potentiometer that provides a continuously variable bandwidth control (from ~60Hz to ~1500Hz). Smooth variable bandwidth can be very useful, especially when CW signals are QRP. The NEScaf is designed to be driven with a phones-or-speaker-level signal. Just connect it to the headphone or speaker output of the radio. It can be used with any number of radios. It is designed so that you use the volume or RF gain control on your rig it to adjust its audio drive. This item was expertly assembled has been fully tested.
“The Milliwatt” was a pioneering series of monthly journals devoted to QRP at below-five-watt RF power output. This six volume set is extremely rare. There were only six produced. Founded by Ade Weiss, WØRSP, author of the world-renowned “The Joy of QRP,” and joined by co-founder Mike Czuhajewski, WA8MCQ, through its first four issues, this "National Journal of QRPp" was published from February 1970 to June 1975. Every issue is included. “The Milliwatt” distinguished itself from other QRP publications by focusing on a power level even lower than QRP’s generally accepted five-watt maximum output. The reproduction was made on 8.5 by 11 inch paper (two pages at a time). It is plastic-comb bound and very rare. Weiss and Czuhajewski are members of the QRP ARCI hall of fame. This six-volume set was a tremendous find by 73 Radio Row.
Jerry Sevick, W2FMI (SK), has been universally viewed as one of the world's experts on Baluns, Ununs and transmission lines. "Understanding, Building, and Using Baluns and Ununs", circa 2001, is viewed as the authority on these devices. The subtitle is "Theory and Practical for the Experimenter." This CD not only gives the theory of how baluns and ununs work, but shows the reader how to make them. Why spend on a commercially-made device when you can wind your own? Sevick explains how. This book is the successor of Sevick's "Baluns and Ununs." This CD has been tested on a PC and works perfectly. A must read!
Just about ANY Tuna Tin 2 can qualify as a QRP collectors’ item. This one is even more special in that it was the QRP building project at the 2000 Ft. Tuthill Hamfest. It is a 40-meter crystal-controlled transmitter capable of about a half-watt RF power output designed by the late Doug DeMaw, ex-W1CER / W1FB (SK). The object of the building project was to take a bag full of parts, the etched PC board, empty tuna can and build a functioning transmitter on the spot. A resistor “dummy load” was put across the antenna jack and anxious builders keyed their rigs to see if its signal could be heard on a nearby receiver. Although it was a hamfest novelty, this TT2 is set and ready to go on the 7.040 MHz QRP calling frequency.
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.
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 brand 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 Hot Water Handbook, HW-8 Recipes” came out in 1985, being compiled and edited by Fred Bonavita, W5QJM (SK). Its 21 pages cover a range of improvements and modifications to this popular multiband QRP CW transceiver from Heathkit. Included are instructions for anti-audio motorboating, installing an Inboard Active Audio Filter, Four Watts for the HW-8, 30 Meters for the HW-8 and lots more. An accompanying image shows its Table of Contents, giving the full picture. The list of writers includes some of the biggest names in QRP in that era. The plastic cover and binding was in such poor shape, we re-packaged this historic manual into fresh plastic sleeves for protecting each page. We have also included a second copy of the manual’s cover if the owner would like to affix it to the cover of the folder. 73RR is very happy to have found this copy and may be obtaining several more.
“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.
The ARRL’s Emergency Communication Library v.1.0 is a great DVD for all groups who provide emergency communications during tough times, or those groups that would like to. Included are PDF documents and PowerPoint presentations, the ARES Field Manual, the ARRL Public Service Communications Manual, APRS software, WinLink 2000 software, a Simulated Emergency Test (SET) video, PowerPoint viewer and Adobe Acrobat Reader. This library is parsed into four sections. If your amateur radio club or EmComm group is looking for information to use and develop skills, this CD is for you. The ARRL’s Emergency Communication Library v.1.0 CD is in its original, sealed packaging. We are unable to determine its publication date, but rest assured many of the fundamentals of EmComm are covered here.
Whoever titled "The New Shortwave Propagation Handbook," must not have taken into account that books on basic theory have long shelf lives. This book was new 20+ years ago but a 1995 time stamp disqualifies it as "new" today. The concepts discussed, though, are solid in 2016. Authors George Jacobs, W3ASK (SK), Theodore J. Cohen, N4XX, and Robert B. Rose, K6GKU (SK), combined their vast knowledge into a very robust desk reference. Check out the table of contents in the accompanying photographs. This copy is almost new condition inside and out, including a solid binding.
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.
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.