Fernando De Noronha Island Expedition

Last October, PY0ZZ and PY0CW were again on the air trorn Fernando de Noronha island r ed PY0ZZ operated from Oc-iOber 9 to 10 and Andre PYflCW operated from Ociober 9 to 26 The) operated on oands in spste ot ine heavy noise especially on SO meters, produced by the generator located In front of the hotel Fred made aboui 6.000 GSQs and Andre 3,000. Anure took advantage ol the Ulp to work on the island so nedid not have too much time to operate Tney u ed a Yaesu FT- H. which turned out the fourth...

Work The Bethlehems

W1 FHPand the Hen House Gang wiil operate on to. 15, and 40 meters from Bethlehem, Connecticut, The Christmas Town, Field-Day weekend- J u ne 25and 26, 1983.They also will operate July 9 from Bethlehem, New York and July 16 from Bethlehem. Pennsytvania.Awards will be available for working four Bethlehems from a rou nd the world. Sen d I og i n fo r mat i o n and 32 stamp to Robert O'Neil W1FHP. Hartl Hill Road, Bethlehem CT06751. Cape Fear ARS, Spivey's Corner, North Carolina, will operate...

Converter

Ihe performance you would etpect from i low to irtld-prlced terminal unit. Although the 32-charactc-r display *as long enough io display whole ords and some sant& nces it look practice to keep up *ith its scrolling Rather than rely on my head tor storing information. I teamed to use a pencil and paper, foiling down notes as the words marched by At frrst I thought the converter was lapsing into gibberi n, but aier discovered that the strange sym& ois I was seeing were iust special teluype...

Qbx

Fig. i Three methods of supplying power to the meter-SW itching circuit zener at th.it poinl will limit the voltage and hence the base current Construction is noncrite cal The photograph of the supply shows the use ot two strips of pertboard-one for I he l( the other for the transistors T4h vector pins hold the boards together, with insulation material between. Besides its compactness and the fat 1 that I was able to use up some s< raps ot perfboard, there is nothing rn particular to...

India

DX George limes in the 40-meter ham band rn hears a local SSB rag-chew m progress Trie ne*t moment no hears * QSL in AM followed by a CW ham happily triumpmg through me progressive come' sations. The round-robir. muiod-mode net goes en merrily loi huurs This musi bi VU2-lam Nowhere fflse on Earth will you fine such an accommodative ham spirit or coexistence with World War II surplus, equipment alongside the ia st ham gea-of Kenwood Vaesu com and home-Ore* QRP transisiortranemliters with mod it...

Rtty Loop

Leavey, M< D< WA3AJR 4006 Win lee Road Randallstown MD 21133 I dedicale this column lo all Of you. Ihe readers I love to hear from, who have made this column grow over the past six years l enjoy your comments, suggestions, and questions and shall share some of them forthwith A short note Irom N4AN, whose signature is as illegible as mine, regarding ihe February, 1983, column and various lypes oi encoded RTTY. He slates, 1 There > s some stuff on the air mat no one win copy except...

Nxl Inooor Shortwave Antenna

Contemporary Electronic Products has announced their innovative new NXL-1000 indoor shortwave antenna. Unlike other ac tive indoor antennas ihe NXL 1000 employs a Faraday shield tor maximum rejec lion ot man-made rvcuse. whi, h is sooifen a problem tor the ama-ejr or SV.l lo addition. the MXL-1000 has a built-Fh crysial ciiiibraior wilh Selectable 1-MHz and 100-kHr markers. This is a jjreat help with uhcalibrated or poorly calibrated receivers. The NXL 1000 covers the i 5-30 MHz range in truee...

Power Amplifiers

All models include RF VOX & Low NoLsc RX Pre*AmpL (nopre-amp in MML43240O) M Ml .144 b *US MMtJ+4 Iffl S MMI.H4 W or 3 m 10W input 0W input ot 3M in ANTENNAS (fncL 50 ohm baJun) 2 Meter J-Beams 12.3 dBd gain 8 over 8 Horizon I j> ol D8-2M 63,40 S by 8 Vertical pol DS-SM-vurt 76.95 ) 250-1300 MHz Loop-Yagi 1206-L Y 44.95 Send 36C stamps for full details of all our VHF UHF items. Pre elector filter Pre-amphilers Antennas Lou pass filters Transveriers Crystal Killers Varactor tripler i...

Fox Tango Corporation

Its i knew that two 2 1 -kHz filters would reduce the -b-riB passband width to a be)Ut 2 kHz and re( tignized that the audio quality would be affecU d I low ever, Heath, Collins, and others have long used J 1-kH SSB filters without owner complaint, further, I applied cascaded 2 1-kH filters in a Heath SB 102 transceiver some years ayo and never regretted it tor a minute I installed the two Fox Tango niters in the TS 830S and found tHe results very gratifying. The following summary of my...

Home Study

Study aT your own pace, while continuing your present lob, Learn from easy-to-ttrider stand lessons, with help from your home-study instructors whenever you need it. In he Grantham electronics program, you first earn your A.S.E.T. degree, and then your B.S.E.T. These degrees are accredited by the Accrediting Commission of the National Home Study Council, Our free bulletin gives full details of the home-study program, the degrees awarded, and the requirements tor each...

Aed Bill

73 Amateur Radio's Technical Journal 336R6 Subscription Dept., P.O. Box 931 Farmingdale NY 11737 Your lire issue tl ffl rtvr m 6 to 6 2300 MHz Amateur Downconverter llnequaled in performance at any price, 55 db system gain. Highiy sensitive for very weak signal Special image rejection circuitry reception. gives additional 3 db improvement Tunes 2000 to 2500 MHz over other designs, 120 low noise amplifier in front end. Unique temperature compensation Complete with power supply, cables circuit...

U

Hins jnr 1 m I . -ru 1 n - nu r I 1 t1 K I 15 M rPrifLiHM fn a RiAfl fcifril'cr tsm t mi cover rin. iMay 021 me reh tue Hi Sat T C TV ver .s na pnrsttri m itfqumndn qch 1 lonii The F12H i ds kr nijiid, pn- chp pj ted nu -jc enM cdmpotHtni layomr -urti acnurali'TfimpcnEri plBf jji,hflfit an tn mibK IF wtlion ,I HI Iq J QH ill l0r a-B vi-numbM ID njftet fjiii ft Of tfle iB nthiciirt Supper L- cl r- ipt'j L3 n -iLia t as co - AcoifipHHc TV Sysfjim rtfljiiiea b dish aninonA. LNA lia moUe artifl. n...

Vhf Linear Amplifier From Encomm

Tokyo Hy- Power Labs. tnc ha announced iti ne gt VH linear ampiitiei the 30-Watt HL-30V for use with portable 2-meter radios. The HL-3QV is a high-quality, eatiy io-use, .30-Watl VHl- amplify It designed to be driven to maximum output power with only 3 Watts driver from han i held radios II will ta e t-5 Walts dhve -vnth i Vtair detirthng atoui ipV-Htrs output Th s near lHle amplifier ts per ect for tu mg your hsnc-he3c tTC-32 tnWftgefrt touchtone contre board from Advanced Computer Controls

Smr Weather Facsimile Recorders

T ao weather mile recorders recently introduced by SVR. inc can take the guesswork out ol weather forecasting for Ihe cruising yachtsman. The MR SF-505 offers numerous tea-lutes Tne unit provides reserving capabitj ties on si crystaJ-controlled channels with a frequency range o' 3 lo 24 MHz. Destined for vertical or horizontal mounting, the compact weather recorder offers approximately 2 hours of continuous receiving time on one roil of aper Other features o tne SF-505 include a neavy-duiy cast...

Rom

Now includes TEXT EDITING RTTY PICTURES SAVE TEXT TO DISK Detailed brochure available on request. MRF-208 MRF-240 MRF-2 .7 MRF-309 MRF-422 MRF-454 MRF-901 P.C. BOARDS FOR MOTOROLA BULLETINS EB-18A - 12,00 AN-762 - 14.00 KEMET CHEP CAPACITORSpf, 82 pf, 100 390 pft 470 pf 50 ea 680 pft 1000 pf55 ea 5600 pf, 6800 pft ,1 uf -1.00 ea .33 i-f1. 90 ea .68 uf -3.90 ea

Multiband Antennas

SUITE 4 3C CAN Cl G A PARK. CALIF. 91303 TELEPHONE 2131 341-5460 A WHOLf UteW WOHLC OF l Y VIEWING WITH TUSA'S NEW MCMiEL CVU-iU. 4 CHAflHtL, feMLE TV CONVERTER Hoetih-a .1 I EjCTflA CAULi TV WIOHAMCT S'J H BANP CHAfHWtikfl r.r urUHH D lt iV_ EIIni.ikjIls rhn nwrl Hji ijpflng nr Itf amp sUig. TTiift iv amp lWH Id.'.ss t ia lt nMbu4d anil riupMCiarvl ctiarm lj ym r fv, VfH Of _ projflchs' amp Bfi1 snj oon srls ihuflt r- amp itendiiici UHF Lir.lirii .rHlT.bYN u thd Id Ihii...

Ons

Myself, firmly believe in starting with an existing circuit rather than starting from scratch. If you would like to ge into the details ot the self-biased mixer used here vou can siart with tin1 ARRL Electronic Data Book. Vou might also want to glance at the popular two-meter preamp in the UHF VHF receiving section ot the ARRL Radio Amateur's Handbook gt The schematic of the converter is shown .in f ig 2 Both Q1 and Q2 are dual gate FETs of the 3N211 or 4067 t variety. Radio Sha lt k sells them...

Papua New Guinea

lt -ie o there and greetings tc everyone from Papua New Guinea and especially from the Island of New Britain. The 10m band appears to have recovered and I have had d great time working into the United States. It is amazir.g how many hams tell me thai they Know my QTh as they were here during the campaign in the Pacific in World War fl. In those days, communications p'ayed a very important role, as the coastwatchers maintained observation over occupied areas ano passed ihe information to Allied...

Queens Nv

The Ebonaire Amateur Radio Society will hold iis 2nd annual namfest flea ma ke on Sunday. June 5, t9B3. Uom 9 00 am to pm. at SoufheTn Queers Park 119-09 Mer nc-t Boulevard nea- ihe St. Aibarr amp vei erana Hospiiali. St. Albany, Queens NY BuyeT5 donalinns are S300 and each exhibitor's space is 4,00, There will be cover ir it rains, and free parking Talk-in on 145,35 144 75 and 146.52 simplex. For more information can Vine KA2CPA at 212 528-0416 or Art WA2YYG al 212 523-2319. nights.

Output

D Trie rS-43Q 3S controls, count err Hick of a switch switches me to my morning net on 75 meters. AM gt n ail, l fee. that Kenwood made rne T amp 430S a real f am able to re place a whole deskful of equipment wiih this one small ngr Out goes the shortwave f amp ceiver the tube HF tig with its external vlo and drgitai readou I did not attempt mobile opera 1 kxi, however. I can see no rea son for this urn not being lops gt n mobile HF Deration l can irork TO-mete' FM with the installation of The...

Haltronix

MAL 2304 MHi DOWN CONVERTERS iFREQ RANGE 200025 C MH2 2304 MODEL 1 KJT BASIC UNIT W'PREAMP LESS MOUSING 4 FITTINGS t1 .t5 2304 MODEL 92 KIT lt Ih proampi 129 K 2304 MODEL KIT Hjgn G m preampt 13 , 5 MODELS 2 amp 3 WITH COAX FITTINGS IN amp OUT AND WITH WEATHER PROOFED DIE CAST HOUSINGS POWERSUPPLV kit for above with case 4. ANTENNAS OTHEft ACCESSOWES AVAILABLE SEND FOR MORE NF

Info

Precision Cut Land Mobiles Available A Satellite Tracking Package For The Apple II Plus1 Has a worfd AND a US map anc can prfnl BOTH on your Epson MXrM printer Tracks in real time w o a clock. SYSTEM REQUIREMENTS- Apple if Pius 48K RAM, DOS 3,3. THESE EASY TO USE AND UNDERSTAND PACKAGES ENABLE YOU TO 1 Track circular orbit satellites in real lime on a world map 2 Prim all taD-es 3i Rapidly predict specific or all orbits between Cdtes you select i-i Rapidly...

Ukh Filter

F'VFHALL PASS HAND FOti Cw OPT RATION f'VFHALL PASS HAND FOti Cw OPT RATION hig. -1 W lal the combination or the two filters provides a respecfab e overall 4 passband characteristic. At fbl the VST is used to reduce -6 lt 1B passband width it only slightly reduces he -bCk B passband width. Use of the VBT and SStf filters tor CV operation results in shoulders on the pass-banc skirts as shown in Icl somewhai less than 1.8r gt The stopband attenuation of the filter is listed as 80 dB or more The...