March 2010 - Dixie Amateur Radio Club
Contents
1. President Nick Nickle W7CRN gave a synopsis of the bylaw change which will be voted on at the March meeting and Vice President Kory Talbot KE7MMH told us about the use of a storage unit which has been donated to the Club If you have Club property please contact Kory to see if it should be stored in the unit The handouts Kevin provided will be available at the Welcome table at the March club meeting for reading should you wish to see them Many thanks to Kevin for the fascinating presenta tion and to all the club members and others who attended this meeting Who Are We The Dixie Amateur Radio Club Inc is a non profit IRS 501 c 3 federally licensed Amateur association of Radio operators also known as ham radio operators who primarily reside in southwestern Utah mostly in the greater St George City metropolitan area We also have members who live in rural areas of Washington County and in areas outside The Dixie Amateur Radio Club Inc is a formally Affiliated Club with the American Radio Relay League ARRL The National Amateur of the county Association for Radio Table of Contents President s Corner 2 New Ham Class 2 Coaxial Cable 3 Farwell and Good 4 K7DLX s Word Search 5 Contest Calendar 5 Forshee s Cornet 6 Radio Geezer 0 6 The Rettysnitch 9 It s not the clas2. since no one could imagine doing all that destruction and killing all over again the League once more took up its work in earnest At just this critical time the Directors received from The Old Man a package containing an authoritative and well preserved specimen of Wouff Hong Turner described the contents of the package as the gruesome instrument of torture By order of the Directors it was hung in the office of the Secretary Editor within easy reach Its first portrait appeared in QST for July that year At each Board meeting the Wouff Hong stood on display to the blanched looks of the humbled Directors The Old Man also presented the world with its first glimpse of the Rettysnitch In 1921 the monstrous machine was presented to the League traffic manager by the Washington D C Radio Club ostensibly after receiving it from T O M Even at its first public appearance two of its teeth were missing suggesting a long history of necessary and effective use However to this day the Rettysnitch has lost no other teeth It was ordered to hang by its mate The Rettysnitch In the 20s and 30s many a reproduction of both instru ments but especially the Wouff Hong materialized across the country A group of hams in Flint Michigan created the mystic society called the Royal Order of the Wouff Hong The society endures to this day according to legends to which have so far not been privy And The Old Man has been given a name H
3. forget the first time walked into his shack The cigar smoke hung heavily on the room There was a fresh Rolling Rock on the desk The operating room was much warmer than the rest of the house on that crisp winter s day Upon reflection think it had something to do with the 4 1000 homebrew amplifier with a Johnson Ranger driver His Collins 75A3 sat along side with great authority He was in the midst of a pileup about to put some juicy African or Asian station in the log as he explained how to find the last station being worked Then he zero beat them carefully and slipped his call in there just as the contact ended He explained all this as he tuned the VFO on the exciter and was silent while he sent his call twice at a brisk 20 words per minute The DX responded immediately with the familiar W8WFB ur 599 BK He dashed off his own 599 OH and sat back and took a long drink from his frosty beer And that s how you do it Find the guy he s talking to then put your self right in his ma way so he cant we help but trip right over you Some lessons I ll never forget wish every one had a DX March 2010 Page 4 Part II e Through the next few years ld hear him working the exotic stuff He never had to call them much because he always listened and then put himself right in their way When graduated from high school sold my only liquid asset and bought my first car It was 1966
4. gone Before you pour sticky substances into a measuring cup fill with hot water Dump out the hot water but don t dry cup Next add your ingredient such as peanut butter and watch how easily it comes right out More next month Send your household tips to Ken and Maxine at kf24mf beyondbb com You know you re a Radio Geezer when you have more tools than you ll ever need but can t you used to have a real ham shack find them you know how to properly tie a wire bundle using you need to keep your radio s user manual on the waxed string desk some of your test gear you built is older than your NOUT antennas are getting smaller and closer to the ground IS been 40 years since you ve had the snot shocked out of you A you forget the band plans J you check into the weather net the noontime net the Bell Telephone net and some other net just because they are there you still have a phone patch and Q multiplier in the ike adult children Ree you add light in front of your radio so you can read the dials gt the neighbor kid annoys you with his rap music so you get on six meters and call CQ when the is no chance of a band opening gt you buy a piece of gear only w to find out you already had one in Si Afi the garage you forgot about 8 GD NOU can no longer log make QSO s and dri
5. is always best to use an antenna tuner if there is a SWR or mismatch Another characteristic of coax is the velocity factor This affects the speed at which the electrons move from on end of the coax to the other It is a known fact that current flow in free space is 186 000 miles per second In a conductor especially coax the speed is slower because it takes time to charge the capacitors in the coax This is another characteristic of coax Capacitance per foot The capacitance per foot is expressed in pF or picofarads per foot So when using coax for matching sections that require a portion of a wavelength it is necessary to calculate the length of cable needed then multiply that length by the velocity factor For example using the formula L 492 f MHz for the length of a L wavelength of wire in free space for 7 2MHz would be 492 7 2 68 3 ft For a 1 2 wave length of the Belden 9258 coax we multiply the 68 3 by 0 66 for a 1 2 wave length of 45 1 feet Ned Stevens K7ELP is a native of Salt Lake City A former Coast Guard electronics engineer Ned retired to Kayenta and enjoys building projects helping new hams and talking with friends on the air and in person You can reach Ned at 435 634 0510 Dixie Amateur Radio Club March 2010 Table 21 1 Nominal Characteristics of Commonly Used Transmission Lines AG or Part Mom Zoe VE Camp Cant Cond Leed shia Jecke OD Mar W Type Mumba ij w D a WC Type Type Mat inches AM
6. 0 Di 2 5 18 Solid CCS PE n m Pi 1 000 10000 Open Wire Line 600 CR 1 1 12 e e mye moma o 12000 1 MHz UA D 0 1 D ai AA LA 0 2 0 1 0 1 o2 a 0 2 appo ooo ooo Ooooeonpneo oo Dow Ww amio bpp MM 0 1 GADO oco coo0o B RD AS AD lob ok oe Goo sooo 88 3 p777 GEF Tt oo o 9909009 Ooooooopopon Oy 2090500 Habag db D oe In kM Oke BS z EI CH i zc zb bt cb cb vi Don Em a a 2ONNM so 0 C0000 FN See ee et ee ch ooooa AD NA GO E ooo mi s h S D Op D Op U Op 0 068 LW Bi i mh mb ep aki k z h ee ee m babak iiiibiiki AP H GPO fo at aa WOME e babu B DO La Gp bh SHUO G bAemes Aiba mS AM APU RUNOS Ota e aa mk me At Bt oooc Sco GD ohm fam oooocd K ee A A Loss OL 20O0 1000 SMR BREE EEE Du hai GI Ai o G D n i ww hapon E TE eil web ak A Om PAPARDO Am e SE s zc s m i A A NODS kt Ge cain cn ge om e UVYNUoO NI OaAMFeaNNs OND OUND DE O U mM N el a be ella ARUH LO eA Pi 3 ch ef s sch s d r EW sall sch oe fb ch w dE D I Dixie Amateur Radio Club March 2010 Page 9 The Rettysnitch By L B Cebik W4RNL Ed note Last month we looked at the legend of the Wouff Hong This month we continue with as much information we could find on the terrible Rettysnitch Read and tremble In 1919 after World War then called simply the Great War
7. 8 5 20 Solid BC PE 5 PE 0 195 1400 CRT Belden 8240 D 66 28 5 20 Solid BC PE 5 Pi 0 183 1800 RG 5BA Belden B219 53 73 265 20 Flex TC FPE 5 Pa 0 195 300 AG 55C Belden A262 DO D I WLA 20 Fin TC FE GC PZN 0 185 1400 AHG 58A Belden A250 SO 56 208 20 Flax TC PE 5 Pi 0 182 1900 AER Belden 14264 TS Di 16 3 20 Solid BC FPE 5 Pi 0 242 200 HE CXP 0815 75 B2 16 2 20 Solid BC FPE P1 0 232 300 AG 59 Biden B212 785 7B 17 3 20 Solid CCS FPE S Ei 0 242 300 AG 58 Belden A241 T D I St A 23 Solid OCS PE ZS Pi 0 242 1700 RAG 624 Belen Rapp g3 DA 13 5 22 Solid CCS ASPE bi 0 240 FSO RG 62B Belden 8255 SA DA 13 5 24 Flex OCS ASPE Pon 0 242 TSO AG 6536 Belden S657 126 DA D 22 Solid CCS AGPE Pah 0 405 T0 AG 142 CHP 193242 DU Gab SCH 19 Solid SCCS TFE D FER 0 185 1800 AG 1426 Belen 63242 50 585 29 0 19 Solid SOCS TFE D TFE 0 195 1400 AG 174 Belen 7805A 50 745 26 2 25 Solid BC FPE FG bi 0 470 20i AG 174 Beloen B216 BO 66 208 26 Figen CCS PE Pq 0 110 1100 AG 213 Belden 8267 DO D I 20 8 13 Flex BC FE S KAN DA 3700 AG 213 CxXP213 50 55 Ku 13 Fiex BC PE Poh 0 405 600 AG 214 Bellen 8268 50 D I 208 13 Flax SPC PE D Pan 0 425 3700 AG 216 Belden 2850 ZB D 20 5 18 Flex TC PE D PZN 0 425 3700 AG 21F WM COe1TF 50 D I 2 6 10 Flix BC PE D PE 0 545 TODO bO 21 Mit Ts AG217 SO 66 208 10 Solid BC PE D Pan 0 545 700D AG 218 Mi7 7S AG218 66 20 5 4 5 Solid BC PE P2H 0 870 11000 AG 223 Belden 273 DO 66 Kaf 19 Solid SPC PE D PZN 0212 1400 PO Be
8. AMATEUR RADIO CLUB Dixie Amateur Radio Club March 2010 Volume 34 Issue 3 2010 Dixie Amateur Radio Club March Meeting Preview MARS and how you can be involved How many amateurs know what MARS is No were afi not talking about the place that the little green man in Bo the Loony Tunes cartoon came from threatening to blow up the Earth with his ludium Q 36 Explosive Space Modulator MARS used to be known as the Military Amateur Radio Service or Military Affiliated Radio Service Recently to better fit their mission they changed the name to the Military Auxiliary Radio Service Steve Peterson KI7L will present information on the new MARS at the March 17th meeting Operational changes and membership information will be provided Also information on new 12V DC Power Distribution devices will be shown All in all a meeting you don t want to miss Take time to enjoy Amateur Radio February Meetin Stormwatchers The February meeting was in the words of one at tendee the best and most interesting club meeting I ve ever attended Kevin Barjenbruch of the National Weather Service enlightened us with instruction and tips on Stormwatch 209 e Ing and how we as amateur radio operators can help 1a _ the NWS with observations Our observations can tip the balance in whether an alert is issued for a particular area for high rainfall flooding or even tornadoes In other happenings
9. DZI and Maxine Forshee KE7HNY When you buy a container of cake frosting from the store whip it with your mixer for a few minutes You can double it in size You get to frost more cake cupcakes with the same amount You also eat less sugar and calories per serving To warm biscuits pancakes or muffins that were refrigerated place them in a mi crowave with a cup of water The increased moisture will keep the food moist and help it reheat faster Start putting in your plants work the nutrients in your soil Wet newspapers put layers around the plants overlapping as you go cover with mulch and forget about weeds Weeds will get through some gardening plastic they will not get through wet newspapers Use a wet cotton ball or Q tip to pick up small broken shards of glass you can t see easily Place a dryer sheet in your pocket It will keep the mosquitoes away To keep squirrels from eating your plants sprinkle your plants with cayenne pepper The cayenne pepper doesn t hurt the plant and the squirrels won t come near it To get something out of a heat register or under the fridge add an empty paper towel roll or empty gift wrap roll to your vacuum hose It can be bent or flattened to get in narrow openings Pina small safety pin to the seam of your slip and you will not have a clingy skirt or dress Same thing works with slacks that cling when wearing panty hose Place pin in seam of slacks and ta da static is
10. S RG Belden TADAA 75 82 162 18 Solid BC FRE FC P1 0 275 600 RG Belden 8715 758 68 20 5 21 Solid CCS PE D PE 0 332 2700 RAG B Belden 78104 50 D 23 0 10 Solid BC FFE FG PE 0 405 600 AG 8 TMS DMAA GA BS 23 9 10 Solid CCA FPE FC PE 0 405 600 AO Belden 913 50 BA 24 6 10 Solid BE ASPE FC P1 0 405 600 IIe CxAPIS1BFX 50 DA 24 0 10 Fine BC FPE FC Poh 0 405 600 AG A Belden 913F7 50 Ba 24 6 11 Fies BC FPE FC bi 0 405 pi FRA 8 Beoioen 974 50 Bz 24 6 10 Sold BC FPE FC Pi 0 408 600 A A THS LMA400UF Gu D 23 9 10 Flex BC FFE FG PE 0 405 600 GER DAF BF 50 BA 24 5 79 5 Flex BC FPE FG PE 0 405 600 3 8 WM OO106 50 DA 24 5 9 5 Aex BC FPE FG P N 0 405 00 O 8 CxpOog 20 76 26 0 13 Fiex BC FPE 5 Pi 0 406 600 AG 8 Belden 4237 52 66 29 5 13 Flex BC FE Pi 0 405 3700 PO BX Been 75064 50 D 23 6 15 Solid BC FFE FE PE 0 246 600 AG 8x TMS LMAZ4O g BA 242 15 Solid BC FPE FG PE 0 242 200 AG 8xX WM CO1168 D B 25 0 16 Fos BC FPE FG P N 0 242 Oo RG 5X ThS LMAZ40UF Gu DA 242 715 Flex BC FFE FG PE 0 242 200 PDG BN Belden 8258 DU B 24 6 16 Flex BC FPE 5 Pi 0 242 600 AG 8x CxXPOSxB Gu BO 253 16 Flex BC FPE E Pi 0 242 200 DG 8 Belden B242 51 66 30 0 13 Flex SPC PE SCBC PIN O420 5000 RG 11 Belen 8213 75 Bi 161 14 Solid BC FP 5 PE 0 405 600 RG 11 Bolden B ap ZB 66 20 5 18 Fits TC PE S bi 0 406 600 AG 58 Belden 7807A 50 65 rc 16 Sold BC FPE FC PE 0 185 200 AG 58 TMS LMR200 5g ag 24 5 Hi Solid BC FPE FG PE 0 195 KAN AG 58 WM CO D 66 2
11. and there was talk of license upgrades and having to pass more code and theory tests to retain the rights and frequencies already had as a general A few years later at college realized had let my license expire Fast forward through a few years Namely twenty eight years later As was driving down a freeway in Utah caught myself reading a road sign in Morse code silently wondered what excuse still might have that would keep me from geiting back to ham radio Next month Ham Radio Reborn Dan Farwell W8EQA is a past president of the DARC and an honorary life member His contributions to the club are numerous He lives in St George with his wife Melody W7RRR that is NOT the Farwells pictured to the left When Dan is not working for the Wal Mart Distribution Center in Hurricane he can usually be found on the HF bands running the rare DX stations This is part of a series Dan has written about his life as a ham operator and knowledge he has gained through the years that he wishes to share with you n Semnmorownw z SA T n e mm Selected Contests BOHM aA Soe mr SS o zl d 9 ZZ GAODD So SC td HOW March 2010 W w n 4 kd Ca ve x i gt se SZ Dm ID kd D HOn OHT kd oO 0 mm FO To S gt OO AJ rd nm Sal Come ze SZ bMoaAZ ms Sr Hens SS Oo JO Jm AOCSMNH oti eo Co ri ER Sac gt nD UH OD D lt Hl CC oam CO m Jmo J DN 8 e Sib 7 o EES I EAGAN BATTERY March 2010 Contest Calend
12. ar AGCW YL CW Party ARRL DX Contest SSB Wake Up QRP Sprint DARC 10 Meter Digital CWops Mini CWT Test ARCI HF Grid Sq Sprint Feld Hell Sprint EA PSK31 Contest Elecraft QSO Party 19002 21002 Mar 2 0000Z Mar 6 to 2400Z Mar 7 0600Z 0629Z Mar 6 and 0630Z 0659Z Mar 6 and 0700Z 0729Z Mar 6 and 0730Z 0800Z Mar 6 11002 17002 Mar 7 1100Z 1200Z Mar 10 and 1900Z 2000Z Mar 10 and 03002 0400Z Mar 11 1500Z 1800Z Mar 13 1600Z 1800Z Mar 13 1600Z Mar 13 to 16002 Mar 14 1800Z Mar 13 to 18002 Mar 14 Idaho QSO Party NA Sprint RTTY Wisconsin QSO Party NAQCC Key Bug Sprint 10 10 Int Mobile Contest Oklahoma QSO Party AGCW VHF UHF Contest North Dakota QSO Party Virginia QSO Party 9K 15 Meter Contest Run for the Bacon QRP CQ WW WPX SSB CAPACITOR ORCUITBOARD CO CONNECTOR DETECTOR DIODE DISPLAY INDUCTOR JUMPER KNOB LE LEG OSCILLATOR REAM RESISTOR SOLDER SPEAKER TRANSFORMER TRANSISTOR SC Bd WIRE 1900Z Mar 13 to 1900Z Mar 14 0000Z 0400Z Mar 14 1800Z Mar 14 to 0100Z Mar 15 0030Z 0230Z Mar 18 0001Z 2359Z Mar 20 1300Z Mar 20 to 0100Z Mar 21 and 1300Z 1900Z Mar 21 1400Z 1659Z Mar 20 144 and 1700Z 1759Z Mar 20 432 1800Z Mar 20 to 1800Z Mar 21 1800Z Mar 20 to 0100Z Mar 22 1200Z 1600Z Mar 21 0100Z 0300Z Mar 22 0000Z Mar 27 to 2359Z Mar 28 Dixie Amateur Radio Club March 2010 Page 6 The Forshee Household Corner By Ken Forshee KE7
13. d in Double Shielded AWG American wire gauge It is listed as a Center Conductor AWG in the table of trans E mission lines The outer conductor or the shield is the common lead and usually con B Eege SZ nects to the ground and the outer shell of the No 2 No 1 coax connector The dielectric is an insulator and it is composed of various materials this Hardline affects velocity factor the maximum voltage mmm of the coax and the capacitance per foot F Most amateur radio receivers and transmit ters use a 50 ohm antenna impedance The lanser Barei M Eesebuer term impedance is a term for AC resistance dee ee that takes into effect a lot of factors that can include capacitance inductance and resis tance and can be multiple combination of R Ge E C L plus other factors This subject can be covered at another time Heliax Center Corrugated Wim yl jackal The characteristics of coaxial cable are Conductor ne ore Impedance expressed in ohms Maximum voltage expressed in RMS Loss per 100ft in different frequencies expressed in dB Velocity factor expressed in a percentage Capacitance per foot expressed in pF oRWD Characteristics 1 through 3 are the only ones important for a typical station installation whether it is a home station mobile station or a temporary station like for field day Characteristics 4 and 5 are important if are using the coax for baluns or using the coax f
14. iram Percy Maxim W1AW At least legend tells the story that way perhaps based on the fact that T O M glared at Kitty while reflecting on the rottenness of everything Maxim did have a cat However true to feline nature Maxim s cat never spilled the beans But what has become of the Wouff Hong and the Rettysnitch More important what has become of their power to enforce both decency and law and order on the ham bands Hams used to cringe at the thought let alone the sight of these dreadful tools of enforcement But we do not hear of them much anymore Oh a tremor of curiosity every now and again brings out a ripple of questions and speculation But not much more more than a ripple You see today we have much more terrifying weapons things like Oozies and H booms and the like They scare us in ways that seem to make the Wouff Hong and the Rettysnitch tame and toothless However even in Maxim s day objectively more powerful weapons were used in France like tanks and gas more poisonous than that made by Texas chili Why were the Wouff Hong and the Rettysnitch so powerful to those early hams Because those hams cared about amateur radio in their hearts They wanted what they knew they could never have a perfectly law abiding and decent radio service that would inspire young and old alike to become hams or lacking the inclination to electronics to become admirers of hams Every minute of on the air time was a chance to show how noble a pu
15. lden 643903 50 669 5 Sa 0 16 Solid SCCS TFE 5 TFE 0 170 1400 AG 216 CXP T1316 D 69 5 29 4 26 Flex BC TFE E FEP 00a 1200 AG 316 Dokoen 4316 BO 635 St D 26 Flex SCOS TFE S FER 0 055 GA RAG 389 MirzePOO 50 669 5 ao 4 fi2 Flax SPC TFE D FER 0 300 S000 AG 400 MI7428 RG400 60 696 204 20 Flor SPC TFE D FEP 015 1400 LMASOO 45 LMASOOUF 50 D 238 7 Flex BC FFE FG PE 0 500 2500 LMASOO TMS LMRSOO0 D BS AR 7 Sold CCA FPE FC PE 0 600 2500 LMABOO TMS LMAGOD DO 56 Pe 5 5 Solid CCA FPE FC PE 0 590 4000 LMAO THE LMABOOUF Gu D i 23 4 5 5 Flea BC FFE FC PE 0 560 4000 LMAIZ00 TMS LMA1200 50 23 1 0 Copper Tube FRE FG PE 1 200 4500 Hardline dc CATV Hardline 50 Bi 25 0 5 5 BE FPE 5M none 0 500 2500 We CATY Hardie Z Di 16 7 11 5 BG FPE DM none 0 600 2500 Ch CATY Hardline 50 D 25 0 BC FRE SM nonea O 875 4000 7e CATY Hardline 75 i 16 7 5 5 BC FFE SM none 0875 4000 LOFS 504 Heliax 1 27 SA DR 25 9 5 Solid BC FFE Cc PE 0 630 1400 LOFS 50A Helin SR SO BE 25 9 0 355 BC FRE cc PE 1 090 2100 LOF 504 Hoeliax 1t SC BS 25 9 0 516 BC FPE LG PE 1550 3200 Parallel Lines TY Twinkgad Bataan 45 200 DO 4 5 22 Flax CCS PE rie Pi 0 400 Te Twinkead Belden 8225 300 B A A 20 Flex BC PE rhe Pi 0 400 OCI Gensere Window Line 405 gi 25 16 Solid CCS PE Pca ees Pi 1 000 100 WM CO 654 420 CA 2T 214 Flex CCS PE rune Pi 1 000 10000 WM CO 552 440 CA 2 5 16 Flex CCS PE hoe Pi 1 000 10000 WM CO 553 450 of 2 5 18 Flex CCS PE mone Pi 1 000 10000 WM CO 551 45
16. nician Class Amateurs All ages are welcome and encouraged And later in the year the Club s Training Committee is sched uled to present a General Class Upgrade class The General Class license opens up many new avenues of enjoyment for any amateur radio operator Keep your browser glued to our 1 website for more information about these exciting opportuni ties Dixie Amateur Radio Club March 2010 Page 3 Coaxial Cable What s so magic about it By Ned Stevens K7ELP Coaxial cable is Known as transmission line It couples the output from your transmitter to the antenna in the transmit mode When receiving the cable feeds the signals that are captured by the antenna a feeds them to the receiver The simplest coaxial cable has two conductors The center conductor is one and the braid or shield as it is called the second conductor If you are using a handheld with the attached antenna there may be a short piece of coax inside the case that connects the electronics to the antenna The pictures to the right show several con Outer Conductor Singie Shielded struction types of coax Looking at the pic erah e tures you will notice the construction of the den _ coax has a center conductor a dielectric and Y ES an outer conductor The center conductor is Center the lead that connects to the center pin of the er Dielectric Gegen eg coax connectors This center conductor has a wire size that is generally expresse
17. or some tuning purposes such as in a repeater duplexer For maximum transfer of power from the transmitter to the antenna the coax impedance should be the same as the antenna and the transmitter A 2M groundplane antenna if constructed to have a 50 ohm feed impedance will have a maximum transfer of power from the transmitter to the antenna minus the loss due to the length of the coax If you use 50 ohm coax to feed a 40 meter dipole there will be a mismatch because the antenna is near 75 ohms and the transmission line and the transmitter are 50 ohms If a SWR meter standing wave ratio meter is inserted in the line it would indicate a SWR of 1 5 1 Continued on page 7 Farwell and Good The Beginning By Dan Farwell W8EQA was first licensed in 1961 in suburban Chicago as KN9OHNS My dad had to take the day off from work to take me downtown to the courthouse for my test The pressure was on but victory was mine In 1963 my family moved to rural Eastern Ohio guess the FCC must have felt guilty no fresh untouched WA8 for me greeted the mailman with anticipation was reissued W8EQA at 16 years old Life was good worked and slaved for my Hallicrafters SX 101A and HT 37 It was then that met my DX Elmer Lee W8WFB heard him on the air one night He was so loud he was blocking my receiver with every dot and dash looked him up in my call book and it said he lived in the same little burg that did l Il never
18. retion of the Board of Directors To vote you must be a full member in good standing 2010 dues paid We will also have a presentation by Steve Peterson KI7L on the MARS program Formerly known as the Military Amateur Radio Service or Military Affiliated Radio Service it has recently changed its name to Military Auxiliary Radio Service with changes in its mission and membership requirements Steve will give us an update on these latest changes and some operational information There will also be a presentation and discussion on 12 volt DC power distribution Our February 20 Fox Hunt was a success even with the rain We had 14 fox hunters participate and all were successful in finding the fox At the March meeting we will review some direction finding techniques that may be used to help locate the fox s den more rapidly The Club s Training Committee has scheduled a Technician License Class to begin on Saturday April 17 and continue each Saturday through May 8 Watch our website for more details as they become available Thanks amp 73 Kick Mickle N7CRN New Ham Class Announced Do you know someone who would like to become an amateur radio operator Your Club can help We have scheduled a Technician License Class to be held starting Saturday April 17th Learning about amateur radio couldn t be easier This class will be held every Saturday for 3 weeks and culminate in an exam session to get the participants licensed as Tech
19. rsuit amateur radio was and should always be They feared the Wouff Hong and the Rettysnitch as instruments of their own consciences as they strove to meet the standards they set for themselves And that is where today you will find both the Wouff Hong and the Rettysnitch deep in your own conscience H they seem to hold no power then you know it is time once more to elevate your standards a notch higher and then to strive to achieve them perfectly Each of us has a secret and private office where no one else may go Above the door facing our f individual operating tables hang two instruments one of law and order the other oft decency However much the outside world may neglect the tradition of these terrible reminders of responsibility each of us possess our own Wouff Hong and Rettysnitch May k you never deserve their sting e The Old Man Like all legends this one too must end with special words pass it on Hiram Percy Maxim Used With Permission antenneX All Rights Reserved www antennex com
20. s of the license that the Amateur holds but the Class of the Amateur that holas the License 2010 Board Members President LR Nick Nickle W7CRN Vice President Kory Talbot KE7MMH Secretary Kevin Merrill KE7TLW Treasurer Harold Wells KE70ZG Board Member Scott Taylor KE7YIQ Board Member Bruce Bissell KE7LGD Board Member Ken Forshee KE7DZI Past Presidents of DARC Ken Forshee KE7DZI Ric Wayman K7DLX Hal Whiting KI2U Hal Whiting KI2U Gary Zabriskie N7ARE Dan Farwell W8EQA Dan Farwell W8EQA Ron Sappington WI7Z Travis Lofthouse KD7FRN Can anyone help me complete this list Please contact Ric Wayman at k7dlxham gmail com SUBMISSIONS WANTED Send your ideas bios articles cartoons etc to Ric Wayman at k7dlxham gmail com ALL HELP WILL BE APPRECIATED March 2010 Page 2 Nick Nickle WZ7CRN President s Corner The March Board of Directors meeting will be held on Thursday March 4 at 7 00 PM in room E of the Community Arts Building 86 South Main Street in St George All members are welcome to attend At our March Club meeting on Wednesday March 17 a vote will be held on the proposed changes to the Bylaws a change term of membership from calendar year to 12 consecutive months b change to a consider honorary members full members for all pur poses of the DARC and c change to provide desig nation of a chairperson for committees at the disc
21. ssion that S ine MPi d Self 7 7 Ta dei E mentioned is the maximum voltage in RMS that 6 HHT p a V d de the cable can handle If this voltage is exceeded o kk LOS iy Why the dielectric will break down and there can be E arcing between the center conductor and the amp CIA Wiz MIM pall UA shield How does this relate to watts since the eee LPS SPY Ce d i transmitter is specified in watts A simple calcu EE d Lith f LO lation will give us the answer 0 5 CRU TAW AE Ay Hi Uu Laf ZA Wei Ze Using the formula Power E squared divided by FT KISS SS SAY S S V V Z impedance and using the spec of 600Vrms 0 2 AVA Lf bf if for the 9258 cable Watts 600 X 600 50 Watts 7200 or 7 2KW From this we cansee Ge Ge d Tull that RG 8X will easily handle the maximum 10 100 200 500 100 power for the amateur service FORWARD POWER WATTS OR MILLIWATTS For more information about this subject please consult many of the ARRL publications and or the internet SWR CHART see page 8 for a chart comparing loss rates of popular coaxial cables When there is a SWR with the coax used standing waves are produced and this could affect the maximum RMS voltage of the coax It is possible that the reflected power may be in phase with the forward power and the two waves would add together Most modern solid state transceivers have in built in SWR detection circuits to reduce the output power or prevent the transmitter from putting out RF It
22. ve at the same time you realize a Life Membership in II cabinet the ARRL is no longer a good NOUT radio warms up faster value than you do HE gets into your hearing aid Many thanks to Bill Smith N6MQS of www artsci com Jon you have to find your teeth to have a QSO Duckworth KB6TLJ and the Newsletter of the San you can t see the parts used to make radios Bernardino California Microwave Society Dixie Amateur Radio Club March 2010 Page 7 Coaxial Cable cont Continued from page 3 If your low band transmitter is putting out 100 watts of SSB power then looking at the chart to the right the reflected power would be 3 watis This is the loss of power due to just the mismatch of the antenna to the transmission line There will also be power loss due to the transmission line L Earlier mentioned loss in dB 100ft of cable For 100 EE LS 20 A example you are using 100 feet of Belden 9258 Sp SES EE RG 8X cable the attached table 21 1 shows a 50 0 9dB loss per 100 ft 10Mhz So the loss m T YY I because of the cable would be about 1 2 of the E TEE 2 d Yb 100 watts or a total of 3 1 2 or about 4 2 watts A FORWARD POWER Sh al SA galr This small amount is not worrying about But _ i reviewing the SWR chart one can see that as Ba i II BE 444 dy the SWR increases the power loss also in 3 EE EE e e d EE creases z EEE n EE Ge 5 y LA if Another characteristic of the transmi
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