Bnb

Become a dealer in this fast-growing field. 1800-838-4051. BNB2032 Psychologist & Extra Class opera* tor has developed an amazing hypnosis tape that allows you to master any code speed easily and quickly To order send SI4.95 + S3.00 S& H to Dr. Hal Goodman, PO. Box 1B4h Eastport ME 04631 For more info, send SASE. BNB2031 TIRED OF IRONING PCB service. No setup, free scanning available FIRST PROTO 4201 University Drtve. 102. Durham NC 27707. (919) 403-8243.

Info

Valley Monitoring Association of Ohio holds tag hunts on the fourth Saturday night. It's about 50 miles from Detroit to Toledo, so it has become a tradition tor Detroit area hunters to go to Toledo hunts and vice ersa, just like the age-old football migrations. We get four or five teams on a low day, up to 15 on a good day ' says N8 QX. When my wife and 1 go down to hunt in Ohio* we don't get back until I or 2 a,m but we work afternoons so it's OK. It's fun, but lots o) wear on tires. NLirk...

Tvcg

818 447-4565 M-Th Bam 5 30pm Visa, MC, UPS COD D f PI FPTPnwirQ Email tomsmb aoLcom K.U, tLCU I rtU2J Hr. FAX 818 447-0489 Dav9 Miller NZ9E 7462 Lawler Avenue Miles IL 60714-3108 Here's another up for ihe Alinco DR-1 2W T 2 meter transceiver, for clcaner sounding transmit audio when using the supplied clcctret hand mike. Though ihe particulars will vary, it should he applicable to other radios. Electret condenser microphone elements are inexpensive ind have very fciflat response curves, but...

O

Fig. 3, Afeg cflf F fer board par s placement diagram. a thin coating of white carpenter's glue it was easy to cui out the holes for the pots and switches with a hobby knife. Next, connect the AC wiring and speaker plug as shown on the assembly drawing, Prewire the two cables through the rear panel before you insert the PC board this way the connectors can be left on the cables. Be careful that the AC switch terminals do not touch the transformer frame. It will be necessary to place 1 8'-thick...

The Antenna

The CCD antenna is now available for the amateur hands. What is ihe 48-46 antenna It consists of 48 pieces of wire interconnected with 46 capacitors. The technical name is Controlled Current Distribution antenna, or CCD, If s been around for a long time in the commercial broadcast field, and recently it was configured for use on the amateur bands. An excellent description and analysis of Ihe CCD antenna is available in both References I and 2 these are worthwhile reading. Rather than making a...

Circle On Reader Service Card

42 73 Amateur Radio Today November 1996 books I've reviewed in my past editorials, or those on my 5 list of books you're crazy if you don't read, and you'll be well armed to talk anyone's ear off, Heyt read the NASA book and drive everyone crazy about the Apollo shots all being bogus. They may think you're crazy to believe such obvious nonsense, but you'll be well armed if anyone actually wants to discuss facts. Most don't. But then Galileo couldn't get people to look through his telescope and...

Mfj

Lf you work with antennas, MFJ's revolutionary new SWR Analyzeris the best investment you'll ever make Now you can diagnose a wide range of antenna problems instantly with one easy-to-use instrument, The MFJ-259 gives you a complete picture of your antenna's performance anywhere between LB and 170 MHz you can even check SWR outside lhe ham bands without violating FCC rules. Set the bandswitch and tune the dial-jusi like your transceiver. SWR is displayed instantly Does. 2 1 SWR mean 25 ohms or...

The Magical Audio Filter

Updating a dandy little receiver helper. Jim Pepper W6QJF 44 El Camino Moraga Orinda CA 94563 imost any receiver can be improved h gt the addition of an outboard audio filter, whether for CW or phone reception. A good lllter can help you hear the stuff you want to, and gel rid of the garbage that's interfering. An article of mine in the November 1983 issue of 73 Jim Pepper W6QIF, The Magical Audio Filter. page 14 resulted from my looking for a null and peaking circuit. I found a design in the...

What Can Dual DSPs Do For

NIR-12 Dual DSP Noise Reduction Unit The NIR-12 is the most advanced DSP noise reduction unit available. Uflpiirullcled performance, snpcr-selcctive FIR filters fully adjustable center frequency and bandwidth, ho ill Dynamic Peaking and Spectral Subtraction Moist- Reduction. spectral multi-tone NOTCH filter. All NIR-12 modes are usable simultaneously- Use on all operating modes including AMTOR and PACTOR. Installed between the receiver audio and external speaker. ji349.4 5 Eliminate power line...

Designing RF Probes

A simple one-hour test equipment project J. Frank Brumbaugh KB4ZGC Box 30 - c o Defendini Salinas PR 00751-0030 An RF probe is used to directly measure the level of RF voltage present at a particular point. It is normally used with a digital multimeter DMM to indicate the voltage level as a DC voltage which is equivalent to the RMS value of the RF being sampled. However, the level of RF being measured provides useful information only when the probe has been designed for use wilh a specific...

It Now You Dont

You won't get stuck with this TapeTetina antenna kit Marshall G. Emm AAOX1 VK5FN 2460 S, Moline Way Aurora CO 80014 I'm not an old-timer, precisely, but llCCR stood for Crcedence Clearwater Revival, and not Conditions, Covenants. and Restrictions. Nowadays. PRB-l notwithstanding, more than half of us live in placcN where the gt threaten to take you to court it you put up something that even looks like an antenna. Since we hams are inventive by nature, there have been all kinds of solutions to...

Qrp

Michael Bryce WE38VGE 2225 Mayflower NW MassiiJon OH 44B46 Egud li s November already. There may he just enough time to throw one more project together before lite holiday s. Since time is rather short. I'll look ai several easy-to-build kits. Many of these kits cost under fifty bucks. All of ihem can be assembled by beginners in a few hours. Experienced builders can be using the kits in less than half an hour. Here is one for the rest of us. Designed by Wayne Burdick N6KK, it's about as simple...

Nhl

JjStJWlj j Stuff JGraphics Jfl i ililL Fig. I. screen shot of the Super Freq List in use. 70 73 Amateur Radio Today November 1996 Online , hul precious link elsewhere. Readers with good information are invited to send contributions to David. who I am sure would appreciate ii, as well as u gt bring such material to my attention. Depending on si e. we ma be able to offer some of the material on the RTTY Loop Home Pa e. Speaking of thai homo page, some miscellaneous notes include word of thanks...

Vol Ultimate Modification Bible

WflLtPSAHJ Tffl gt IORE HTOM1II OX i gt l y iVW SOKE WTUN .YHttJ fOR CEI vNn kl.UE RaTHIQS __ oVF.n tlVFJt 3 MOEHMCAl IONS 10 C11 FLL.1. 1 'AfH TT H nvf-Ji 31 MODIFICATIONS m riAfct FiAjitn . fl VFH 50 COMPLETE S VNTJIB Jllffll CMYSTALCtlAKTS IT fc m tiT I 11VEII Q J'RECALCULA tV MtHMHCf F10W ftVHTAi. I ilVBH liSC ANNE I M D4PI AMOK'S AN H1 r.N ME n-R n p V,, 1 JtAWO Mf jni'.M luNJf Murito I LSI7II KlieUJItf ICS AND AW H CNNAi lMX db U AJN-LUS CI I AH I . J KDC SOUND ORDERS ONLY t-8 DO-256-9895...

Ftz Radio Amateur

0.1 F 35 VDC tantalum Radio Shack 272-1432 Michael J, Geier KB1UM c o 73 Magazine 70 Route 202 North Peterborough NN 03458 La si lime, we were examining the effects of the three kinds of stress ihat damage electronic gear mechanical, clectrical and thermal. This time, lei s Like a look at the components themselves and how the three siresscs affect each one. Mechanical stress is rarelv a factor in semiconductor failure. You can throu a transistor or an integrated circuit across the room all you...

Features

A simple one-hour rest equipment project, A Low Current Light KB4ZGC Great for portable operation. Can You Top This - N6JF The world's tallest mobile antenna The 48-46 Antenna -W4ANL The CCD antenna is now available for the amateur bands. A Dirt-Cheap Broadband 80 Meter Vertical - W0RKU Top-Loaded Vertical tor 2 Meters - AD1B A small antenna with capital T performance. The Magical Audio Filter Revisited -W6QIF Updating a dandy little receiver helper, Hams on the Radio Information Highway, Part...