China

Ing down across the steppes of north central Asia, 1 he plane was equipped with up-to-date spec ialized navigational gear, but some of it was useless bet ause no Hump base had ihe counterpart equipment The C 87 had the same radio gear as its parent B-24, except that the C-87 had fewer interphone crew stations due to elimination of the bombardier and gunner stations on the plane It the interphone was operating correctly, all crew stations could jhear the radio compass signal, the liaison and...

Info

These remain at the same state during SET and ARMed periods and change only during The presence of the alert tone. Do not replace Die chip yet if any ol these pins do not agree. 'This pin should go high while pressing the ARMed button The corresponding alternative values for R3 and R4 are shown in Table 3. Most of the delay between the introduction of an alert tone and relay activation is introduced by K7 and OG. These may be adjusted to provide a longer or shorter delay. If one wishes to have...

Sf Mod Kits

S-F Radio Amateur Services of Culver City. California, distributes a series ol modification kits for the very popular Kenwood TS-620, and makes some pretty impressive improvement claims for them. Both the receiver and transmitter sections are addressed. The four kits are a front end improvement, a balanced mixer improvement, a high-powerJ (QRO) kit, and an rf compressor-to-clipper conversion. Actually, the compressor-to-clipper modification is not WGTOG's work. It is produced by Magicom of...

Oregon

Stark Street Portland, OH. 97205 (503) 773-5815 PENNSYLVANIA Hamtronics Trevose 4033 Brownsville Road Trevose. PA 19047 (215) 357-1400 J RS Distributors 646 West Market Street York, PA 174Q4 (717) 664-8624 SOUTH CAROLINA GJ.S.M.O, Communications 230 5 Cherry Road Rock Hill i SC 29730 i803> 366-7157 SOUTH DAKOTA Burghardt Amateur Center P.O. Box 73 208 Easi Kemp Avenue Watertown, SD 57201 (605) 886 7314 TENNESSEE Amateur Radio Supply of Nashville 615 S. Gallatin Road Madison. I'M...

New Nls Touch Test

Futuristic touch controls and a multitude of test functions are featured in Non-Linear Systems' new Touch Test 20 digital multimeter. The 3Vz-digi1 Touch Test 20 measures 10 parameters and 20 functions and includes 44 ranges. Test parameters include ac and dc volts, ac and dc current. resistance, capacitance, temperature, continuity, conductance, and diode test. The package size is a smail 2.9 inches high by 6.4 inches wide by 8 inches deep. Weight is less than 3 pounds. Touch Test 20 may be...

Our Easiest Clock To

6 Digits 12 or 24 Hour Format H ffi Cfock rests between two il fl Kit is complete including top * BHBffi mi quality PC board, all components pre-cut and drilled plexigfas and all hardware. 29.95 Wired and JrThe DEB-TED Rapid Mobile Charger is a l constant voltage charger that will charge jgjpjPM P vyour batteries off a 12 Volt source in 4-6 r (iHours. You may use the charger at all L ( times, this includes transmit and receive j . Jp Sw (periods, it is equipped with a cigarette lighter plug on...

Ol J

TO Z MX4IG4 Piii& Y BACHED O BAM* C. Fig. 8. Expansion circuit for a 200-number system ATF417 pre-amp net Special S 19.95 MRF 901 UHF transistors, 1 GHz S COMPLETE KITS CONSISTING OF EVERY ESSENTfAL PAfiT NEEDED TO YlAKE YOUR COUNTER COMPLETE HAL 600A DIGIT COUNTER WITH FflE QUENCY (IANGf OF ZEWQ TO 600 MH FEATURES TWO INPUTS ON FOR LOW FREQUENCY AND ONE FOR HIGH FREQUENCY. AUTOMATIC ZERO SUPPRESSION TIME BASE '5 i 0 SEC OR 1 StC GAtE WITH OFT ONAL O SEC GATE a.* LA8LE ACCU ACv MM UTILIZES...

Electronics Programs

Heath Continuing Education, a division of Heath Company, has introduced a series of three new leam-at-home electronics programs, Each program covers an advanced electronic subject. All three programs use pro grammerf self-instruction textbooks that present the subject matter in easy, bite-sized'1 segments, They come complete with electronic parts for optional hands-on experiments. Operational Amplifiers. EE 101, covers the fundamentals of this commonly-used integrated circuit family, including...

Convenient Top Controls

The TR-2400 has the most convenient operating features desired in a 2-meter FM handheld transceiver * Large LCD digital readout, Resdab e in direct sunlight l.v rtualfy no current dram) and in the dark ilamp switch). Shows receive and transmit frequencies and memory channel Arrow indicators show ON AIR MR* (memory recall), BATT (battery status), and 'LAMP switch on. Keyboard selection of 144.000-147.995 MHz in 5-kHz increments No 5-UP switch needed. UP DOWN manual scan in 5-kHz steps from...

Westlink Update Department

Anolher question that is often asked of me is why t continue to produce a weekly amateur radio newscast when there is no way to subsidize it. Actually* I am not the only one who subsidizes itf there are two of us. For the most part, the funding to keep the Westlink Amateur Radio News ative comes from Bill Orenstein KH61AF and me. Currently, it costs us close to 500 each month, a cost that we share. And we cannot use Westlink as a tax deduction since it's not a Charity, business, or any known...

Phone Orelks Call

J H V i Q O q- qifl Jfl- y doft H npt p Qird I-, 6- ri' Ijjrm Ion t'.-'d. S fo ih.pprn m 1 .j Q-TM biiho'i' nrfd ' -.OD arid 3 L 'd 1 add SO a a f icfer Servj ce t 'e page r 9 J Communications Electronics the world's largest distributor of radio scanners, celebrates Christmas early with big savings on Bearcat synthesized scanners. EEectra Company the manufacturers of Bearcat brand scanners is offering consume rebates on their fantastic line of crystalless scanners purchased between September 15...

Rcc Dx Award

Vernon Dameron

This week I was very happy to hear from my dear friend Professor Giulio Nardona, the President of the Radio Club Ciechi d'italia. Giuiio and his fellow amateurs are particularly proud of the following two awards. The Radio Club of Blind Radio Amateurs of Italy has organized a new award entitled the RCCl DX Award, Starling from December 25 1975, this award is open to all radio amateurs who can accumulate a total of 350 points as prescribed by the rules of the award. Increments of 400T 500, and...

Guam Island Award

I am proud to announce the very latest award being offered by the Mariana Amateur Radio Club of Guam Island, known as the Guam Island Award, The re quirements of the award are very straightforward. Applicants must work and confirm at least five 5 individual amateurs located on Guam Island. There are no band or mode re strictions applicants must have their list of contacts verified by at least two amateurs or a radio club secretary. Be sure to give the usual log book information plus the name of...

Waiqq

make a good rig better WB6MYI 62 The Strange Predicament of Walter Hann -OE8WHK did the right thing - and suffered the conjequences- . WA4PYQ 66 Put the Rep in Your Repeater lt i automatic autopatch dialei , . K4ALS 68 Quick and Dirty Line Noise Suppressor r I - 4 - B 1 - - - - - I - f iff I- the last flight of 4J-107270 Ritchey 78 easy-to-btiild substitution bo WD5CD 84 buiJdtng solar-powered repeaters B3HXV 114 Transmitter Tune-Up for Blind Hams an audible indicator tor power out WA4LBX 120...

Satellite Receiver System

The entertainment opportunity of a lifetime Look what KLM.s SKY EYE 1 offers Near 1y 100 channles of the latest fhcvies, sports news, comedy, classic films, specials, religious programs and much more all in clear, sharp studio quality picture nd sound, forget about fringe or no-reception areas, ghosts fading imaging and all the other problems of TV reception. KLM s SKI EYE 1 is your direct link to the 11 TV satellites now orbiting above the U.S. Vou,U experience great shows and the greatest...

Thomson

I vli'iilHf III 1.1 1 IWL-Hihii 1iB gt Miih UC I IH I- I-- . - -1-1.1 Miltner anynntK rn n 1 .fflkj 11 1 t OVt iflor liswIH- i' . '1 a tvn lt V n a dlj . V.UMf l 1 I FI I. IT . I - I - HI A jWl J H . , I iiihtiIv HI vd 15 ACID HlftviMH hC ' TOO fllitliVfllU RllldllE 7 5 UH9II Mlinudun arc jurfiyHl UMlly wiiU Kir .lCpl-ratujfls rwMP hun JI-0 st JE I , H I ii hjtii L0 inmAi amp m vm1 Hn lt HIh anr - f T11 r. jiiL ir r gt Func lll a Irn'lv Ml ICfhrll -y Mi a tj.-ucHn Hui rj '- lt h ' ---- ---1 car...

Fight Back

Have you ever heard of David Horowitz No, David Is not an amateur radio operator. David Horowitz is the host of a weekly syndicated NBC television program called Fight Back David is the author of a new book of the same name. and, in my opinion, it's the best book on consumer awareness I have ever set my eyes on. Basically, it tetts you how to avoid getting ripped off and what to do if you are. I won't try to review the book here, but it's more than just another consumer awareness volume. I will...

Hunting Lions In The Air Contest

The contest is sponsored by Lions Ctubs International and coordinated by Lions Club Rio de Janeiro Arpoador, Brazil. Participation in the contest is open to all duly licensed radio operators, Lion and non-Lion. There are two modes phone and CW. Participation in both modes is allowed, but points are counted separately. All amateur stations participating must operate within their licensing regulation. Separate categories will exist for single operator and radio clubs societies. Multi-operators...

Snowflake Madness

The Michigan Technological University Amateur Radio Club and the Copper Country Radio Amateur Association announce a radio celebration of our Winter Carnival festivities in the northernmost part of Michigan's Upper Peninsula. Tech s Winter Carnival is probably the most spectacular winter festiva in America with fantastic snow sculptures, dog- sled races, lots of skiing, and other festive events. In association with the Copper Country Chamber of Commerce, we are issuing a certificate to all...

Wabp Award Of Belgium

The UBA Awards Manager, ON5TO, has announced the very popular WABP Award Program. This award is available to licensed amateurs and SWL stations. There is no limit as to date there are no band or mode restrictions. To quality for the WABP Award, the applicant must work and confirm contact -viih each of the nine Belgium provinces on a minimum of two amateur bands. Once the requirements have been met, have your list of contacts verified by a radio club official. Do no send QSL cards Enclose your...

New Ic Dispensers

Ation has introduced its new MDD series of DIP JC dispensers for MGS and CMOS as well as standard devices. The dispens ers offer flexibility and convenience to such a unique degree that they are patented. Each channef easily accepts any standard IC shipping tube and can accommodate any standard C from 2 to 64 pins on .300, .400, or ,600 centers. Adjustable guides position each IC individually for easy extraction, and simple gravity feed ensures reliable deposit of next IC into extraction...

Uhf Preamps

Vh L I jr il i - pfCy-El iJ- frii ' iCitHS 11 . . t V SC Hj r . ,5 A Dia J - dB rDtSP .' Hi hi- predrric i - - at th I lor 11 . 1 amp lam r.'w t ow-i it mAi BN Model 4J2PC 420 450MHz Extremity Sen lMve 1 His fii i'i i I pKn'idts j w t lt 0'i I jun fi.-qunafl Int iie nandtnrj npoucaiians A fwemturn mte-ol ifH -an dnr- - K . - J 10 . ugh lt tv 'TV TwiO ' - J- .i1 lei -r ftgurefl t d i gt Ca t2 von 3c cow tfita ytQinn' i'm MHr ptHnrnp pfowrtttts it gt r lew-mi.pf NMl noifl 1igu e The liimt...

Ies from Galactic

an audible indicator for power out janm D lUtrm-y WA4U X 42 Lak amp sirle Drive FhronceAL 5MU Blind hams have used a variety of devices to tune their transmitters, with the conversion of visual indications to audio tones be ing the most common approach A blind friend, W5KUY, recently asked me to build a coupler to insert in his coax to sample the rf voltage 1 his voltage would be used to drive a voltage-to-frequency converter After looking at his converter with its three transistors and two...

Fooo

Voltage-to-frequency converter schematic. fer from the transmitter to the antenna will occur when the transmitter is properly tuned Rf power is sampled by inserting a coupler similar to the ones found in wattmeters into the feedline following the transmitter or linear amplifier, ft one is used The coupler is connected by a length of shielded microphone cable to a voltage-to-frequency converter constructed around a 555 timer IC The circuit for the rf coupler is shown in Fig. It is built...

Bearcat

Tim itne that pi on ne red lyniheii d JCiilfimg - and unlock new channels of Mu crystals to buy full 6-twndcoverage Keyboard programming make frequency selecuon ai easy t punching s puih button teJepho -h Dec.mal dtaoUy nd ci.uiiv rolling iwos to show tthH'i being programmed jrwj moni- ' lt -' jtoma '- teireh for finding ftrw 'liqimiciei. Cobra 2 lt K gt TL Recognised industry Standard Cobf t papier CS mo it Ifw Truc ers c no- Dffiu t 1 L ynaMiN ii iiini wvninq indicam uiumtn p Kj s RF SwR mal...

Microwave Diode

For Down Converters - 2835 1.50 or 5 For 6.00 2 to 12 Volts DC Draws 5 ma. at 2.5 Volts 12.5 ma. at 5 Volts - 20 ma. at 7.5 Volts 35 ma at 10 Volts 40 ma. at 12 Volts 1 inch x inch Base inch High LIMITED QUANTITY .50 Each or 5 For 2.00 12 Hour Format 12 Voii Operation, .3 nch Display Has Radio Alarm Output. Complete w h QrvBoard Switches and 4 Pin connecifon for easy hook up With Data Plug In transformer and 11 parts to make dock operational 2,30. 256 By J CMOS Ram By Harris Super Low Currern...

Ms

North Atlantic RB-503C S-U77 VM-204 5 i nger Phi Icq Sierra 470A-50 Pol jfjd 50-1 10 1M4 Plug In For J439A Automatic Ndnge Selector 4 3440A High Gaun Auto Range Plug In for 3439A 344QA AC DC Remote Plug In For 343yA 344QA wUh a 5436A and a 5485A , Nemory Display, toiftpactron Adapter For Tube Tester DC Plug In Distortion Measuring Equipment Mega Sweep Rada Pulse Sr. 0 to 80MHZ Utilator 4.5 to 220ttiZ DC VTVM Static Meter Pico Ampmeter E I ectroniettr TWT Amplifier 3 to 12.4GHZ at IGOwatts 40dB...

8p6kx John Webster

Marys vil te, Washington 98270 206-659-4279 The famous Paiomar Engineers preamplifier has been updated and packaged in an attractive new cabinet. For the SWL there is the P-3G5 9-v DC powered and the P-30S 115-v AC powered featuring full shortwave coverage, selection of two antennas, 20 db attenuator, 15 db gain control and on-off-bypass switch. For transceivers, the P-310X features automatic bypass on transmit, adjustable delay for return to receive, and 350 watt transmit capability. ATI...

Kreco Model Ca Coaxial Antenna

When hams decide to put up a base station antenna for two meters, thoughts often turn to the ubiquitous quarter-wave ground ptane. The usual approach is to mangle some coat hangers and solder the resufts to an S0-239 chassis-mount connector, This might be the cheapest solution, but it is not necessarily the best, This configuration has a relatively high angle of radiation and is not what could be referred to as a neighbor-pleasing des gn. Worse, the antenna-to-coax connection is exposed to...

Avards

There are no band or mode restrictions however, l am told if the applicant wishes to be recognized for single band or mode accomplishments, the preference should be stated when making application. Tne Onion Award is issued on a point basis. Stations in Belgium need to total '0 points for the award Europeans need 5 points other DX stations must accumulate a total of 3 points. These points are earned as fol lows one 1 point for a contact with an amateur located in the Aalst section of Belgium and...