Lvq

Figure 7 Sample FET amp stage tuning with loothpick tooi. Figure Typical Ga n vs. Frequency4 chart for a GaAsFET figures of 1 dB or less and higher gains at 2 meters. At lower frequencies stability is a concern however, and precautions shouSd be taken to ensure designs are we 11-shielded, preventing unwanted oscillations. FETs, specifically GaAsFETs, are capable of very high gains and low noise figures from a few hundred MHz to the very high GHz of the micro wave region. Some of the newer Hempt...

How To Use Coils Mfj29

MFJ-259 or MFJ-209 SWR Analyzer anywhere with the JV1FJ-29 custom Carrying Pouch. MFJ-29 cushions blows, deflects crapes, and protects knobs, meters and display s from harm Wear it around your waist, over your shoulder, or clip il onto the tower while you work-lhe fully-adjustable webbed-fabric carrying strap has snap hooks on both ends Protect your investment and keep your analyzer safe and looking like new MFJ- 08 MFJ-208 2 Meter VHP S7SBS SWR Analyzed finds the * ** SWR of any antenna from...

Circle On Reader Service Card

L Houghton WB61GP San Diego Microwave Group 6345 Badger Lake Ave San Diego CA 92119 GaAsFETs and the Radio Amateur How to Re-Tune Circuitry for Amateur Use Amplifiers can be constructed out oi many different types ot devices from MMIC modular amplifiers, the sort that works in a drawer, from a plastic package, or from various discrete devices. Transistors or bipolar types are the most common devices available in bom PNP and NPn van* The transistor is a good device but has a couple ot...

Ysr

R-1283 GRC RECEIVER covers VHF in bands 30-90and90-300MHzAM-FM-CW-Pulse continuously tunable 21.4 MHz IF. Selectable bandwkfths 67 or 300 KHz and 3 MHz Sofid-stale with tuning and level meters, 8F0, AGC. video output and N connections Requires 115 V 60 Hz 3.5x19x17, 30 ibssh. 145.00 50 FT. GUY WIRE ASSEMBLY,3 16 steel braid with 2 heavy-duty snap hooks on 171 long steel bracket has locking pulfey and tension adjust. Designed for antenna support use. 8 lbs. sh. SMD-423629, Unused 16.95 Prices...

The Sentech Model Q Meter Quagi Antenna

Take another look at this VHF workhorse. Sentech, fnc, P.O. Box 2136 Rtverview. FL 33569 Telephone 813 677-4410 Price Class 99.95 U.S. , plus 6 UPS shipping The Quagi is a beam-type antenna combining The advantages of a cubical quad and a yagi. Guagis were unheard of although probably experimented with prior to the publication of the first design and construction articles in QST 1977 by Dr Wayne Overbeck N6NB, but have become very popular among weak-signal VHF-UHF enthusiasts. The term Quagi...

FEB

GLENVIEW, IL The Lake County IL RACES ARES Group will operate N9US Irom 1500Z Feb. 25th- 100Z Feb. 26th, observing the end of flight operations at Glen-view Naval Air Station afier 5B years Of naval air service . CW - 3.580. 7.035, 14 030, 21 140 Phone - 3.880, 7 280. 4 280, 21 320. 28 430 OSCAR Q 3 satellite 145 910, Packei 145,03. Far a certificate, send QSL and a 9 x 12 SASE to Lake County RACES ARES. 1303 North Milwaukee Ave., Libertyville fi 60048. GRANDE PRAIREr ALBERTA, CANADA Members of...

Tower Jack

Hams know that taking down tower sections can be a backbreaking chore You don't have to go it alone anymore wfth the induction of the new Tower Jack product. This sturdy device will help you dis manile tower sections whether you1 re up 15 feet or 150 feet. Pictured here is Tower Jack s inventor Jeanene N5UHL with OM Kenny WB5JLZ demonstrating her new patented tool. The Tower Jack is priced at S49 retail, 36 ham net For more information or to order contact Tower Jackt P.O. Box 82321, Baton...

Circle On Reaoer Service Card

Local oscillator and filter stages on the 222-28K1 wor and sent to a Mini Circuits TUF-1H passive mister stage. The Iransverter is designed to accept signals from 1 mW to 100 mWr but ihere is a provision on the board for an optional MAR-6 MMIC stage lo boost the low transverter drive from certain radios, such as Icom's 740 845 751 735 and later series. The local oscillator uses a pair of bipolar transistors to produce about 15 to 17 dBm of signal, which is combined in the TUF-1H mixer...

Mhy

Wireless relay switching scheme. loops. A simpler and less expensive solution is to use 2 x 2 lumber. My installation makes use of a 20-foot length of treated 2x6 lumber that has been ripped on a table saw into three 2x2 sections. DoiTi rely on the pressure treating of ihe lumber as the only protection from the elements, It also needs a couple of coats of varnish or a good grade oil base paint. The actual construction of the mast is detailed in Figure 4. The primary objective of this...

Info

MFJ -949E M o re ham s u se the MFJ-949E than an other antenna runer in the uorld Whv Because you get proven reliability, Lhe ability to match just about anything and a one year unconditional guarantee. You a lighted peak and average reading Cross-Needle SWR watlmeter, antenna switch, 4 1 balun for balanced lines. 1.8-30 MHz coverage and a full size dummy load that easily handles 30 5 wans of abusive lune-up pow er, New 8 position antenna switch lite you pre-tune into dummy load to minimize...

BNB

Fu Sil r uJ ifetn -it mt tin t -irtiij QntlLn OmpmctH - Pt oUTI J S Vir FitUiL- KJrtkpr- r Qu JlFl x irt ' FulJy inul-il J. svjHf jld n ci gt rr dr. IqW Jtiija Fu Sil r uJ ifetn -it mt tin t -irtiij QntlLn OmpmctH - Pt oUTI J S Vir FitUiL- KJrtkpr- r Qu JlFl x irt ' FulJy inul-il J. svjHf jld n ci gt rr dr. IqW Jtiija fl i W1 1 Ifcpota PcJi Snf l KV HE ft JV-lODip'ir SI n iQtKjwk Quurwr Si GlRV Ejltl 2D-KH ip lt it 1 Hci Miifc HHftGIRV' ItuhM M It UW - f r.-ti i ttl n i PUw. Pi hmt, Di i I O...

Station Antennas

Good VHF UHF performance at a moderate price. n the June 1994 issue of 73 I took a look at Midland international Corporation's 18-300 series of high-quality mobile antennas for 144 and 440 MHz At the time, J femember thinking, Wouldn't it be great if Midland aEso had a line of base station antennas that worked as weil as these and were moderately priced 0 Well, the gooes news is that Midland does have em, and J was able to procure a couple for this review. Both are colfinear designs, employing...

Departments

10 Dual Si-Square Loop for HF 70 Above and Beyond Try this easy, low-cost approach on 20 and 2 73 Ad Index 22 Reading Morse Code on Your PC 74 Ask Kaboom Decipher Morse code right off the air, or improve your own fist W6PRO 81 Barter 'n' Buy 46 Cheap Dual-Band Yagi 60 Carr's Corner A fine VHF UHF beam made from old TV 80 Dealer Directory 52 Grounding and Lightning Protection, Part 1 Feedback Index Protect your shack and yourself from 64 Hams With Ciass 10 The Yaesu FT-900AT HF Transceiver 4...

C

Combining ' brick wall DSP filters with the wor ddtara MFJ 1278B gives you ham radio s most powerful multi-mode data controller -- the new MFJ-1278B DSP -- for an incredibly low 379.95. You won't believe your eyes when you see solid copy from signals Completely buried in QRM This MFJ-I278B DSP, your transceiver and computer are all you need for exciting digital QSOs You II discover a whole new world of ham radio. You'll communicate in ways you never knew existed. The MFJ-1278B DSP and MFJ-1289...

Urps

1 0 2 01 23 05 Meed count of dropped-out runners at A 2 0 12 01 23 09 Please obserue freeway onramp traffic 3 0 12 01 23 M Crowd control needed at finish line 4 0 12 01 23 12 Fse get number of leod female rur gt n r 5 0 12 01 23 14 30 additional Rce bandages needed public service, WB4APR lashes up 'breadpan trackers to put on vehicles-Take an upside-down breadpan and put your TNC, radio, batteries, and GPS receiver into it, he says. You can tape it to the roof of a carH or even put it on a...

Pls

S8-7 S8-7NMQ Dual-Band 146 446MHz w Fold-Ovei. No Gtound Plane Required Gain amp Wave VSWR Max Power Length Connector 146fvSHz 4.5dBi wave 1.5 1 or less 7QWFM 4' 7 PL-259 or center-loaded NMQ style 44 MHz 7.2d6i H wave x 3 HA-4S Quad-Band HF i0 20 15 12 10 Meters w Fold-Over Wave VSWR Weight Lenylli Max Power Connector 4 wave 2 1 or less 1 lb. 14 m. 4 120W SSB Pffl SB'5 SB-9 MO Dual-fM No Ground Plane Required Gain amp Wave VSWR Max Power Length Connector 146MHj 3-0dBi Vi wave 1.5 1 or Jess...

If Shift

Gives you full computerized control of your transceiver. Data from Packet IVMovKv autcmatic tunes your transceiver to the DX station you want, Frequency and mode is sent to jLogview Windows for automatic logging MFJ-5383K Kenwood MFJ-53S3 Y Yaesu MFJ-5383i flcom pre-wired Transceiver-to-Computer interface cable has RS-232 serjal interface fcuilt-inl Each cable has connectors wired for your transceiver and IBM compatible computer. Just plug a pre wired cable into your transceiver and computer...

From Transel Technologies

Protect your Hi's, Cellular Phones, Pagers, and any olher devices you carry that may be subject to damage. The PACK-IT is made of 1 4 neoprene material which Is safety belt sewn to the nylon protective backing. The PACK-IT doesn't trey like many other materials and is safe to wash whenever needed. The strap and 2 beltloop is made from commercial grade webbing and is secured in the front with a Veicro hook and loop assembly. The PACK-IT doesn't wear the radio like leather and protects the radio...

Mini Kits

Examine for 10 days. If not pi amp ased rerurn m original form iflr refund. Add 4-95 h ppiing. handling and insurance. For foreign orders add 20 fot surface mai , COD U.5, only add 5,00, Orders undflr S20 add 3.00 NV residents add 7 sates tax parts warranty on kit parts. 1-year parts amp labor warranty on wired units. RAMSEY ELECTRONICS, INC 793 CANNING PARKWAY VICTOR NY 14564 For a slick litile QRP boost use one of the 20 Watt amplifiers, Meeds only 1 2-2 watts...