--------------- FIDO MESSAGE AREA==> TOPIC: 188 HAM TECH Ref: EF400001 Date: 11/01/97 From: IVY IVERSON Time: 03:22pm \/To: ROB DENNIS (Read 1 times) Subj: 2M 3 dB J-pole (in UUE) -=> On 11-02-97 16:28, Rob Dennis said to Ivy Iverson,<=- -=>"About 2M 3 dB J-pole (in UUE)...,"<=- Hi, Rob; II> Here are the plans for the 6 dB 2-Meter J-pole, You can make it from II> section 1 of 1 of file 2mjpole < uuencode 5.32 by R.E.M. > II> begin 644 2mjpole II> M4&QA;G,@9F]R(#(M365T97(@-B!D0B!*+7!O;&4Z#0H-"B`@("`@("`@("`@ RD> RD> Ivy,posting a UU-enocded file here once in a while is ok,(as long as RD> it is something real short G!) but just to let you know that some RD> sysop's frown on it coming thru their BBS's with their normal echo RD> traffic. I am well aware of this. There was a request for plans for an easy-to- build antenna which I have found to be an extremely effective non- directional 2 M skyhook, and since a lot of BBSs cannot handle high ASCII, my only option, short of crashmail, was to UUencode it and put it in a message. It is not something which I do regularly, and I do keep the length of ALL my messages under aproximately 120 lines because some tossers cannot handle longer files, and this post was comfortably under that limit. I am painfully aware of what long posts can do to a tosser, because mine cuts off at 200 lines sharp, and I have had to ask for a repost, with messages broken into smaller chunks for that reason. I am also paifully aware of what it co$t$ to transport files, since I am disabled, and have to bring in all my FidoNet by long distance. RD> If you can,post any BASIC-type small antenna programs in RD> plain-text to avoid a sysop getting upset with the UU-encoded stuff. I'm sorry, I do not have any programs for calculating J-poles. All I have is a generic antenna (vertical/longwire) calculating program. RD> Their are several J-pole programs written in BASIC for DOS,but it RD> depends on --which-- version of the BASIC compiler they were written RD> under. Maybe a small note to state which version of BASIC and DOS the RD> program can be run under will save time if someone runs it and has a RD> problem with it crashing. GW-BASIC (early DOS 3.?? or DOS 5.0) BASIC RD> programs will not run under MS-DOS 6.00 and up with the newer version RD> of QBASIC and can hang and crash. You have just pointed out a problem with sending listings of BASIC programs... they require the correct version in order to be run, so are not very portable, unless whoever receives them is familiar enough with both "supplied" and "available" versions of BASIC to be able to translate to a different version. Compiled programs cannot be sent as messages unless they have been UUencoded, and are a LOT larger than just sending a drawing... which brings us back to the question of posting UUencoded files... Circle: (n) See circle. :-} 73 DE KB9QPM Ivy ... Antenna... Isn't that Uncle Harry's wife? -- ,-----> Ivy's WALL BBS Home of Lakeshore Net <-----, |---------------> Ivy Iverson, KB9QPM <--------------| `-> Netmail me a request for info on Lakeshore Net <-' ___ Blue Wave/QWK v2.20 [NR] --- TriToss (tm) 1.03 - (Unregistered) * Origin: Ivy's WALL BBS - Sheboygan, WI 920-457-9255 (1:154/170) --------------- FIDO MESSAGE AREA==> TOPIC: 188 HAM TECH Ref: EF400002 Date: 10/31/97 From: MIHA VALENCIC Time: 05:45pm \/To: ALL (Read 1 times) Subj: 28 to 50 converter * Original message posted in: HAM_TECH. * Crossposted in: HAM, AMATEUR_RADIO. ! Does anyone have a transverter plan to 50 Mhz band from 28 MHz (or from 27 MHz?). I do have transverter plan from 28 to 2m and from 2m to 6m, but I'm in need of transverter from 11m (or 10m) to 6m. Old paperware, .pdf, .gif, tiff whatever, I'd appreciate it. E-mail: ivi@iname.com \M --- timEd/2 1.01.g3+ * Origin: Iron Fist (2:380/106.10) --------------- FIDO MESSAGE AREA==> TOPIC: 188 HAM TECH Ref: EF400003 Date: 11/03/97 From: EDGAR MCKINNEY Time: 05:16pm \/To: ROY WITT (Read 1 times) Subj: 971103-21 Thanks Re: 971029-3 Thanks > EM> Thanks and I'm also looking for 220 and 440 'J POLE' Plans If any has > EM> them. I plan to us them in a rough enviroment such as on a mountain > EM> top repearer. > Take this plan and delete whatever you want to get to 220, 440... T H A N K S !!! Now my buddies and I can get to work!!! I've built a two meter 1/4 wave beam that was in QST. I only instead of using a 4 foot boom I had a 12' 4" TV antenna boom. It works great! I did notice that the matching system was simulat to the "J". Again many thanks!! :) EDGAR KB 8 QEU --- Virtual Advanced Ver 2 for DOS * Origin: The HideAway BBS (1:2620/13) --------------- FIDO MESSAGE AREA==> TOPIC: 188 HAM TECH Ref: EF500000 Date: 11/04/97 From: ROB DENNIS Time: 04:53pm \/To: JEFF EDMONSON (Read 1 times) Subj: Tower posts >> I knew I was missing a part (part 4) of the LPA >> series but when it was reposted here I never saw it at all. >> I'm going to go thru my disk again and see if I can't >> find that missing part and add it into the post when I do a repost. JE> Send 'em to me, in e-mail. I'll send you a file-attached ZIP of all the stuff I have been posting. Files ending in a .PST extension are already posted to the echo,those ending in .WNE are to be posted. Will send them out this Wednesday evening via E-mail. --- GoldED 2.42.G1219 * Origin: VE3SJN....Moderator....HAM_TECH (1:163/506.4) --------------- FIDO MESSAGE AREA==> TOPIC: 188 HAM TECH Ref: EF500001 Date: 11/04/97 From: ROB DENNIS Time: 04:55pm \/To: ROY WITT (Read 1 times) Subj: LPAS series >>>> RD> ROY! Re-post please... RD>> The part I need is from the LPDA posting,part # 4. RW> LPDA or LPDS series? I've got them all, just let me know which one it s RW> that you need. Antenna type and for what band.. RW> === Begin LPA4.ANT === RW> Ham (Amateur) Radio TECHnology Conference (1:202/909.10) RW> HAM_TECH Msg : #578 [26] From : Wayne Sarosi RW> LPA Series - 141-149 MHz (2m + MARS/CAP) USE: Amateur Band 2m and Thanks,that was the part I needed Roy. I was missing the 2m antenna from the series. Now that I have it complete I'll get ready form some major re-posts in the next month or two of all I have plus a newer version of the `find the jammer' file and a short article on a home-brew rubber duck. --- GoldED 2.42.G1219 * Origin: VE3SJN....Moderator....HAM_TECH (1:163/506.4) --------------- FIDO MESSAGE AREA==> TOPIC: 188 HAM TECH Ref: EF500002 Date: 11/04/97 From: ROY WITT Time: 08:17am \/To: ROB DENNIS (Read 1 times) Subj: LPDA.BAS program... Hello Rob. 02 Nov 97 16:28, Rob Dennis wrote to Ivy Iverson: RD> under. Maybe a small note to state which version of BASIC and DOS the RD> program can be run under will save time if someone runs it and has a RD> problem with it crashing. GW-BASIC (early DOS 3.?? or DOS 5.0) BASIC RD> programs will not run under MS-DOS 6.00 and up with the newer version RD> of QBASIC and can hang and crash. Here's a Log Periodic antenna program that Wayne could have used when he built his. I built a small one for TV and it works great. I think this will run under DOS 3.3's basic program. I used it with Qbasic. === Begin LPDA.BAS === 10 REM Program to compute LPDA dimensions and parameters - KE3Z 3/12/87 15 DIM L(30),D(30) 20 DEF FNCOT(X)=COS(X)/SIN(X) 'Cotangent 30 DEF FNACOT(X)=ATN(1/X) 'Arc cotangent 40 DEF FNLG(X)=LOG(X)/LOG(10) 'Log base 10 50 DEF FNDEG(X)=X*(45/ATN(1)) 'Radians to degrees 60 DEF FNRAD(X)=X*(ATN(1)/45) 'Degrees to radians 70 PRINT:PRINT "Log-periodic dipole array calculations":PRINT 100 REM Set default values 110 TAU=.9 120 SIGMA=.05 130 R0=200 140 ELDIA=.125 145 FDIA=.125 150 REM Get user inputs 160 GOSUB 1500 'Frequency range 170 GOSUB 1000 'TAU 180 GOSUB 1070 'SIGMA 190 REM Calculate array size 200 GOSUB 2000 210 GOSUB 1700 220 S$="TSAFX" 230 PRINT "Change T)au, S)igma, A)lpha or F)requency" 235 PRINT "calculate X)msn line or for element data"; 240 INPUT X$:IF X$="" THEN 400 250 IF ASC(X$) >= ASC("a") THEN X$=CHR$(ASC(X$)-32) 260 FOR I=1 TO LEN(S$) 270 IF LEFT$(X$,1) = MID$(S$,I,1) THEN 300 280 NEXT I 290 GOTO 230 300 ON I GOSUB 1000,1070,1200,1500,320 310 GOTO 200 320 GOSUB 2200 325 GOSUB 2900 330 RETURN 400 FOR I=2 TO N+.5 410 L(I)=TAU*L(I-1) 420 NEXT I 430 D(2)=(L(1)-L(2))/2*COTALPHA 440 FOR I=3 TO N+.5 450 D(I)=TAU*D(I-1) 460 NEXT I 470 GOSUB 1700 480 IF CHGD=1 THEN GOSUB 2900 490 PRINT "El. Length";TAB(35);"Spacing" 500 FOR I=1 TO N+.5 510 PRINT I;TAB(5);:X=L(I):GOSUB 4000 515 PRINT TAB(35) 520 IF I=1 THEN PRINT " ---"; ELSE X=D(I):GOSUB 4000 525 PRINT 530 NEXT I 540 GOTO 230 990 END 1000 REM Get TAU from user 1010 PRINT "Enter TAU, 0.8 <= TAU < 1.0 (default";TAU;"): "; 1020 INPUT "",X 1030 IF X=0 THEN RETURN 1035 CHGD=1 1040 TAU=X 1050 RETURN 1070 REM Get SIGMA from user 1080 PRINT "Enter SIGMA, 0.05 <= SIGMA <";.258*TAU-.066;"(default";SIGMA;"): "; 1090 INPUT "",X 1100 IF X=0 THEN RETURN 1105 CHGD=1 1110 SIGMA = X 1120 RETURN 1200 REM Get ALPHA from user 1210 PRINT "Enter ALPHA (default";FNDEG(ALPHA);"): "; 1220 INPUT "",X 1230 IF X=0 THEN RETURN 1235 CHGD=1 1240 ALPHA=FNRAD(X) 1250 COTALPHA=FNCOT(ALPHA) 1260 SIGMA=(.25-TAU/4)*COTALPHA 1270 RETURN 1300 REM Get R0 from user 1310 PRINT "Enter desired R0 (default";R0;"): "; 1320 INPUT "",X 1330 IF X=0 THEN RETURN 1340 R0=X 1350 RETURN 1400 REM Get ELDIA from user 1410 PRINT "Enter element dia. in inches (default";ELDIA;"): "; 1420 INPUT "",X 1430 IF X=0 THEN RETURN 1440 ELDIA=X 1450 RETURN 1500 REM Get F1 and F2 from user 1510 PRINT "Enter lowest frequency"; 1520 IF F1<>0 THEN PRINT " (default";F1;")"; 1530 INPUT ": ",X 1540 IF X=0 THEN IF F1=0 THEN 1510 ELSE 1560 1550 F1=X 1560 PRINT "Enter highest frequency"; 1570 IF F2<>0 THEN PRINT " (default";F2;")"; 1580 INPUT ": ",X 1590 IF X=0 THEN IF F2=0 THEN 1570 ELSE RETURN 1600 F2=X 1610 RETURN 1700 REM Print array parameters 1705 PRINT 1710 PRINT "Frequency:",,F1;"to";F2:PRINT "Operating BW:",,B 1720 PRINT "Array BW:",,BAR:PRINT "Structure BW:",,BS 1730 PRINT "TAU:",,TAU:PRINT "SIGMA:",,SIGMA:PRINT "ALPHA:",,FNDEG(ALPHA) 1740 PRINT "Boom length: ",:X=L:GOSUB 4000:PRINT 1750 PRINT "Number of elements:",N 1755 PRINT "Longest element:",:X=L(1):GOSUB 4000:PRINT 1760 PRINT "Max. stub length:",:X=ZT:GOSUB 4000:PRINT 1770 RETURN 1800 REM Get feeder wire diameter 1810 PRINT "Enter feeder wire dia. in inches (default";FDIA; 1820 INPUT "): ",X 1830 IF X=0 THEN RETURN 1840 FDIA=X 1850 RETURN 1900 REM Get actual feeder spacing 1910 PRINT "Enter actual feeder spacing in inches (default =";FSPACT; 1920 INPUT "): ",X 1930 IF X=0 THEN RETURN 1940 FSPACT=X 1950 RETURN 2000 COTALPHA=(4*SIGMA)/(1-TAU) 2010 ALPHA=FNACOT(COTALPHA) 2020 B=F2/F1 2030 BAR=1.1+7.7*(1-TAU)^2*COTALPHA 2040 BS=B*BAR 2050 LAMBDAMAX=984/F1 2060 L=(.25-1/(4*BS))*COTALPHA*LAMBDAMAX 2070 N=1+FNLG(BS)/FNLG(1/TAU) 2080 L(1)=492/F1 2090 ZT=LAMBDAMAX/8 2100 RETURN 2200 REM Calculate Z0 and elements 2205 CHGD=0 2210 GOSUB 1300 2220 GOSUB 1400 2230 SIGMAP=SIGMA/SQR(TAU) 2240 ZAV=120*(LOG((246/SQR(F2*F1))/(ELDIA/12))-2.25) 2250 ZX=R0/(8*SIGMAP*ZAV) 2260 Z0=ZX*R0+R0*SQR(ZX*ZX+1) 2265 Z0ACT=Z0 2270 GOSUB 1800 2280 FSP=FDIA/2*10^(Z0/276) 2285 FSPACT=FSP 2290 GOSUB 1900 2300 Z0ACT=276*FNLG(2*FSPACT/FDIA) 2310 R0ACT=Z0ACT/SQR(1+Z0ACT/(4*SIGMAP*ZAV)) 2320 RETURN 2900 REM Print calculated feeder 2920 PRINT:PRINT "Required feeder spacing:",FSP;"in.","Actual:";FSPACT;"in." 2925 PRINT "Required feeder Z0:",Z0,"Actual:";Z0ACT 2927 PRINT "Desired R0:",,R0,"Actual:";R0ACT 2930 PRINT "SWR:",,:IF R0>R0ACT THEN PRINT R0/R0ACT ELSE PRINT R0ACT/R0 2940 RETURN 4000 REM print feet as feet and inches 4010 REM Enter with value to print in X 4015 IF INT(X)=0 THEN PRINT " ";:GOSUB 4040:RETURN 4020 PRINT MID$(STR$(INT(X)),1);" ft "; 4030 PRINT MID$(STR$(INT((X-INT(X))*1200)/100),2);" in"; 4035 PRINT " (";:GOSUB 4040:PRINT")";:RETURN 4040 PRINT MID$(STR$(INT(X*1200)/100),2);" in"; 4050 RETURN === End LPDA.BAS === ... LOTUS - Let Only The Users Suffer * Origin: KB6PI * HAM-ECHO Moderator * San Diego, CA * (1:202/909.10) --------------- FIDO MESSAGE AREA==> TOPIC: 188 HAM TECH Ref: EF500003 Date: 11/04/97 From: ROY WITT Time: 08:23am \/To: EDGAR MCKINNEY (Read 1 times) Subj: 971103-21 Thanks Hello Edgar. 03 Nov 97 17:16, Edgar Mckinney wrote to Roy Witt: EM> Re: 971029-3 Thanks EM> >> EM> Thanks and I'm also looking for 220 and 440 'J POLE' Plans If >> EM> any has them. I plan to us them in a rough enviroment such as >> EM> on a mountain top repearer. >> Take this plan and delete whatever you want to get to 220, 440... EM> EM> T H A N K S !!! EM> EM> Now my buddies and I can get to work!!! EM> EM> I've built a two meter 1/4 wave beam that was in QST. I only instead EM> of using a 4 foot boom I had a 12' 4" TV antenna boom. It works great! EM> I did notice that the matching system was simulat to the "J". EM> EM> Again many thanks!! :) No problem. This conference used to be run by an antenna guru. He supplied us with a lot of antenna projects. That particular plan I got from a local HAM oriented BBS... ... Macho Man: one who jogs home from a vasectomy operation. * Origin: KB6PI * HAM-ECHO Moderator * San Diego, CA * (1:202/909.10) --------------- FIDO MESSAGE AREA==> TOPIC: 188 HAM TECH Ref: EF500004 Date: 11/04/97 From: KEN BROWDER Time: 12:33pm \/To: ALL (Read 1 times) Subj: Lost license Hello All. It's been a while since I checked the regs. When one loses his license, what is the procedure to get a new one? Is it just send in a 610 with that request? Sounds dumb I know. Thanks, Ken WW4X --- GoldED/386 2.50+ * Origin: The AmaRad BBS*423-339-1826*Cleveland, TN (1:362/1110) --------------- FIDO MESSAGE AREA==> TOPIC: 188 HAM TECH Ref: EFA00000 Date: 11/05/97 From: ROB DENNIS Time: 03:21pm \/To: JOE NICHOLSON (Read 0 times) Subj: 2M 3 dB J-pole (in UUE) -=>> Quoting Rob Dennis to Ivy Iverson <=- RD>> GW-BASIC (early DOS 3.?? or DOS 5.0) BASIC programs will not run JN> Guess I shouldn't tell anyone that all of my GWBasic programs are JN> still running on MSDOS 6.22. Lucky you Joe. I've had a few things written for GWBASIC crash or fail under DOS 6.22. Maybe I should have made an entry for GWBASIC in the SETVER file to have DOS tell it (the program) it was an older version of DOS? Software can be so finniky sometimes.......... --- GoldED 2.42.G1219 * Origin: VE3SJN....Moderator....HAM_TECH (1:163/506.4)