|
Antenna Questions
Hi, I am going ot setup my own random/longwire.
I have alread about 50 feet of 50 Ohm RG-6 for the lead in. I have about 50 feet of 2 conductor speaker wire, and about 200 feet of 4 conducter telephone wire. First am I going to need a 9:1 transformer to make this work? My input is supposed to be 50 Ohm. Is a sloper omni directional? If not which end goes to what area I want to listen to? Thanks! Ant |
I havea wooden fence that I can attach this wire to. Can I staple it up
with metal staples? Thanks! Ant "ASW" wrote in message gy.com... Hi, I am going ot setup my own random/longwire. I have alread about 50 feet of 50 Ohm RG-6 for the lead in. I have about 50 feet of 2 conductor speaker wire, and about 200 feet of 4 conducter telephone wire. First am I going to need a 9:1 transformer to make this work? My input is supposed to be 50 Ohm. Is a sloper omni directional? If not which end goes to what area I want to listen to? Thanks! Ant |
On Tue, 02 Dec 2003 20:01:35 GMT, "ASW" wrote:
Hi, I am going ot setup my own random/longwire. I have alread about 50 feet of 50 Ohm RG-6 for the lead in. I have about 50 feet of 2 conductor speaker wire, and about 200 feet of 4 conducter telephone wire. First am I going to need a 9:1 transformer to make this work? My input is supposed to be 50 Ohm. Is a sloper omni directional? If not which end goes to what area I want to listen to? Thanks! Ant The slope points in the direction you wish to receive from. Simplify, simplify...100 feet is fine and a lot easier to support over the life of the antenna. No transformer is necessary. H Retired Teacher, Terrible Mechanic, Worse Plumber! LPFM Page: http://home.att.net/~optcamel/fmradio.htm |
ASW wrote:
I havea wooden fence that I can attach this wire to. Can I staple it up with metal staples? Thanks! Ant "ASW" wrote in message gy.com... Hi, I am going ot setup my own random/longwire. I have alread about 50 feet of 50 Ohm RG-6 for the lead in. I have about 50 feet of 2 conductor speaker wire, and about 200 feet of 4 conducter telephone wire. First am I going to need a 9:1 transformer to make this work? My input is supposed to be 50 Ohm. Is a sloper omni directional? If not which end goes to what area I want to listen to? Thanks! Ant The matching transformer is optional, but I think you'll find it makes a significant improvement in the performance of the antenna. |
*sigh*
well that did not seem to work. I am being blown out by my local AM station. But I am still pretty dead on all the other AM stations. I cannot pick more than say 3 or so. Before it was about the same. But I all I seem to have done is increase the noise! I have some spurious interference every 60-70 Khz. This is from my power I am assuming. How do I get rid of it? I have it hooked up to about 50 foot of speaker wire. Which is in turn soldered to the center lead on my coax. The coax then goes into my reciever. Am I missing something? Thanks! "ASW" wrote in message gy.com... I havea wooden fence that I can attach this wire to. Can I staple it up with metal staples? Thanks! Ant "ASW" wrote in message gy.com... Hi, I am going ot setup my own random/longwire. I have alread about 50 feet of 50 Ohm RG-6 for the lead in. I have about 50 feet of 2 conductor speaker wire, and about 200 feet of 4 conducter telephone wire. First am I going to need a 9:1 transformer to make this work? My input is supposed to be 50 Ohm. Is a sloper omni directional? If not which end goes to what area I want to listen to? Thanks! Ant |
Really odd thing.
I am picking up news talk 1010 out of Toronto on 6070. Is this normal? I live in Bay City MI. "ASW" wrote in message gy.com... Hi, I am going ot setup my own random/longwire. I have alread about 50 feet of 50 Ohm RG-6 for the lead in. I have about 50 feet of 2 conductor speaker wire, and about 200 feet of 4 conducter telephone wire. First am I going to need a 9:1 transformer to make this work? My input is supposed to be 50 Ohm. Is a sloper omni directional? If not which end goes to what area I want to listen to? Thanks! Ant |
*sigh* well that did not seem to work. I am being blown out by my local AM station. But I am still pretty dead on all the other AM stations. I cannot pick more than say 3 or so. Before it was about the same. But I all I seem to have done is increase the noise! You didn't mention what radio you're using, but sounds like you're overloading the front end. I think the antenna is working fine, but your radio can't handle the loud AM stations in your area. Perhaps a antenna tuner or preselector will help. You can make one quite easily with parts from an old radio found in the trash, or rummage sale. What radio are we talking about? jw wb9uai milwaukee |
On Tue, 02 Dec 2003 20:39:54 GMT, "ASW" wrote:
I havea wooden fence that I can attach this wire to. Can I staple it up with metal staples? Thanks! Not the best idea, wrap a wire around the post to an insulator then from the other end of the insulator is youir antenna...do the same at the up end of the slope and attach the hot lead of your coax to the antenna. like this |------------------------------------------------------------------------|| insulator antenna insulator Retired Teacher, Terrible Mechanic, Worse Plumber! LPFM Page: http://home.att.net/~optcamel/fmradio.htm |
In article om, "ASW"
writes: *sigh* well that did not seem to work. I am being blown out by my local AM station. Hi Art: - BTW what kind of receiver do you have ?? I have a Sangean 606A, Icom R-75 and a $ 10 Jwin JX -M14 The M-14 overloads sometimes, the others; - Even using 100 foot random wire don't overload much at all.. - YOu could try something like a Pre selector ( See below ) http://www.mfjenterprises.com/produc...odid=MFJ-1045C _-I am within ten miles of several 50,000 watt AM Stations; No problem. I have it hooked up to about 50 foot of speaker wire. Which is in turn soldered to the center lead on my coax. The coax then goes into my reciever. Am I missing something? - Try just holding the antenna NEAR your radio, not touching it, moving it closer & farther away from the receiver & see if that helps.. Dan But I am still pretty dead on all the other AM stations. I cannot pick more than say 3 or so. Before it was about the same. But I all I seem to have done is increase the noise! I have some spurious interference every 60-70 Khz. This is from my power I am assuming. How do I get rid of it? I have it hooked up to about 50 foot of speaker wire. Which is in turn soldered to the center lead on my coax. The coax then goes into my reciever. Am I missing something? - Try just holding the antenna NEAR your radio, mooving it closer & farther away from the receiver & see if that helps.. Thanks! |
Which direction are you pointing the slope? Conditions right now are not good either...solar cycle et al. It'll calm down in a few months and then reception will improve slowly. Try 7k - 10K area at night. H On Tue, 02 Dec 2003 21:13:25 GMT, "ASW" wrote: *sigh* well that did not seem to work. I am being blown out by my local AM station. But I am still pretty dead on all the other AM stations. I cannot pick more than say 3 or so. Before it was about the same. But I all I seem to have done is increase the noise! I have some spurious interference every 60-70 Khz. This is from my power I am assuming. How do I get rid of it? I have it hooked up to about 50 foot of speaker wire. Which is in turn soldered to the center lead on my coax. The coax then goes into my reciever. Am I missing something? Thanks! "ASW" wrote in message igy.com... I havea wooden fence that I can attach this wire to. Can I staple it up with metal staples? Thanks! Ant "ASW" wrote in message gy.com... Hi, I am going ot setup my own random/longwire. I have alread about 50 feet of 50 Ohm RG-6 for the lead in. I have about 50 feet of 2 conductor speaker wire, and about 200 feet of 4 conducter telephone wire. First am I going to need a 9:1 transformer to make this work? My input is supposed to be 50 Ohm. Is a sloper omni directional? If not which end goes to what area I want to listen to? Thanks! Ant Retired Teacher, Terrible Mechanic, Worse Plumber! LPFM Page: http://home.att.net/~optcamel/fmradio.htm |
I am picking up news talk 1010 out of Toronto on 6070.
Is this normal? Quite. Thats CFRX which rebroadcasts CFRB. The only signal I can get on that band during the day. jw wb9uai milwaukee |
First off, thanks everyone for replying I really apppreciate it!
OK, sorry for the lack of info here. I have an ICOM PCR-100 The local AM station is AM 790 and it is about 20 miles away or so. Specs. "Class: B Daytime Power / # of Towers: 5,000 watts / 6 / directional Nighttime Power / # of Towers: 1,000 watts / 6 / directional" I got about +40dB on it with ATT on. WIth ATT off I get my needle pegged. It is not really a sloper. I kinda just wove it in and out of the fence posts every few feet. Thanks again. "ASW" wrote in message gy.com... Really odd thing. I am picking up news talk 1010 out of Toronto on 6070. Is this normal? I live in Bay City MI. "ASW" wrote in message gy.com... Hi, I am going ot setup my own random/longwire. I have alread about 50 feet of 50 Ohm RG-6 for the lead in. I have about 50 feet of 2 conductor speaker wire, and about 200 feet of 4 conducter telephone wire. First am I going to need a 9:1 transformer to make this work? My input is supposed to be 50 Ohm. Is a sloper omni directional? If not which end goes to what area I want to listen to? Thanks! Ant |
In article om, "ASW"
writes: First off, thanks everyone for replying I really apppreciate it! OK, sorry for the lack of info here. I have an ICOM PCR-100 - This one ?? ( See below ) http://www.rnw.nl/realradio/icr100.html |
nope this one...
http://www.universal-radio.com/catal...rxvr/3100.html "Diverd4777" wrote in message ... In article om, "ASW" writes: First off, thanks everyone for replying I really apppreciate it! OK, sorry for the lack of info here. I have an ICOM PCR-100 - This one ?? ( See below ) http://www.rnw.nl/realradio/icr100.html |
ASW wrote: Hi, I am going ot setup my own random/longwire. I have alread about 50 feet of 50 Ohm RG-6 for the lead in. I have about 50 feet of 2 conductor speaker wire, and about 200 feet of 4 conducter telephone wire. Both of these are very useable First am I going to need a 9:1 transformer to make this work? My input is supposed to be 50 Ohm. It is not necessary but may help. An impedance matching device may work better than the balun or a tuner Is a sloper omni directional? If not which end goes to what area I want to listen to? Slopers hear better the direction they are pointed but still hear well in several directions in my experience Thanks! Ant -- 73 and Best of DX Shawn Axelrod Visit the AMANDX DX site with info for the new or experienced listener: http://www.angelfire.com/mb/amandx/index.html REMEMBER ON A CLEAR DAY YOU CAN HEAR FOREVER |
Well I have come to the conclusion that the antenna I have made really does
not improve anything. An example would me RTE on 6155. With my Scantenna It comes in pretty clear. I get about +3dB to +5dB. A little fading, some static cutting in and out. With my "DIY" antenna about the same as far as dB goes, but much more fading, and a lot more static in between fades. Oh well back to the drawing board. Thanks Ant. On a side note, as I tune across the bands, the "Dead Space" that I know nothing is one (3200). I get about about +8 dB of pure static. As I scan through the frequencies up until about 5000 I get a wave pattern of sinal that peaks every 60+/- herz. Is this the power in my house? How do I get rid of it? Thanks Again. "ASW" wrote in message gy.com... Hi, I am going ot setup my own random/longwire. I have alread about 50 feet of 50 Ohm RG-6 for the lead in. I have about 50 feet of 2 conductor speaker wire, and about 200 feet of 4 conducter telephone wire. First am I going to need a 9:1 transformer to make this work? My input is supposed to be 50 Ohm. Is a sloper omni directional? If not which end goes to what area I want to listen to? Thanks! Ant |
I am a bit late on this one but I have run a 60 foot or so random wire on my
fence in the back yard. I used television antenna wire standoffs to keep the bare copper from touching the fense and an MLB Balun form Universal. I have this hooked to an old Drake R8 and for the most part I am happy. It does sound as though you are overloading your front end. Maybe something to knock the gain down a bit will help. Tim "ASW" wrote in message gy.com... Well I have come to the conclusion that the antenna I have made really does not improve anything. An example would me RTE on 6155. With my Scantenna It comes in pretty clear. I get about +3dB to +5dB. A little fading, some static cutting in and out. With my "DIY" antenna about the same as far as dB goes, but much more fading, and a lot more static in between fades. Oh well back to the drawing board. Thanks Ant. On a side note, as I tune across the bands, the "Dead Space" that I know nothing is one (3200). I get about about +8 dB of pure static. As I scan through the frequencies up until about 5000 I get a wave pattern of sinal that peaks every 60+/- herz. Is this the power in my house? How do I get rid of it? Thanks Again. "ASW" wrote in message gy.com... Hi, I am going ot setup my own random/longwire. I have alread about 50 feet of 50 Ohm RG-6 for the lead in. I have about 50 feet of 2 conductor speaker wire, and about 200 feet of 4 conducter telephone wire. First am I going to need a 9:1 transformer to make this work? My input is supposed to be 50 Ohm. Is a sloper omni directional? If not which end goes to what area I want to listen to? Thanks! Ant |
ASW wrote:
Well I have come to the conclusion that the antenna I have made really does not improve anything. An example would me RTE on 6155. With my Scantenna It comes in pretty clear. I get about +3dB to +5dB. A little fading, some static cutting in and out. With my "DIY" antenna about the same as far as dB goes, but much more fading, and a lot more static in between fades. Oh well back to the drawing board. Thanks Ant. On a side note, as I tune across the bands, the "Dead Space" that I know nothing is one (3200). I get about about +8 dB of pure static. As I scan through the frequencies up until about 5000 I get a wave pattern of sinal that peaks every 60+/- herz. Is this the power in my house? How do I get rid of it? Thanks Again. More than likely, what's happening is RFI from lamp dimmers, dirty power supplies in consumer electronics and the like is finding it's way from your house to the antenna on the braid of the coax. An impedance matching transformer, with it's own ground should help with that. Lower the noise level, and you'll find more signals. |
In Bay City Michigan NOTHING's normal ......... trust me, I was raised
in the are 8-} Friendly shot complete, what you describe is a classic case of overload, though I'm surprised it's not from a more local station. More often, you receive the bogus signal on a direct multiple (harmonic) of the primary (fundamental) frequency with an offset that will match your IF - the fact that this is 6x the fundamental = 10 KHz is odd by my standards. Is your antenna grounded? I've had overload on a portable with an antenna that was grounded, was worse when the radio was on the same ground. Went to a balun without DC continuity and it cured the problem. Suggest you follow up on the grounding, try it with antenna + radio grounded, antenna grounded - radio not and neither grounded to compare results. Also, if using a portable re-examine the length of the antenna; I've found best results at 50 feet and less with portables. Good Luck, Howard On Tue, 02 Dec 2003 21:34:23 GMT, "ASW" wrote: Really odd thing. I am picking up news talk 1010 out of Toronto on 6070. Is this normal? I live in Bay City MI. |
CFRB rebroadcasts on 6070 kHz, so yes, that is normal.
I grew up near Pinconning, but consider Bay City my home. Bill "ASW" wrote in message gy.com... Really odd thing. I am picking up news talk 1010 out of Toronto on 6070. Is this normal? I live in Bay City MI. "ASW" wrote in message gy.com... Hi, I am going ot setup my own random/longwire. I have alread about 50 feet of 50 Ohm RG-6 for the lead in. I have about 50 feet of 2 conductor speaker wire, and about 200 feet of 4 conducter telephone wire. First am I going to need a 9:1 transformer to make this work? My input is supposed to be 50 Ohm. Is a sloper omni directional? If not which end goes to what area I want to listen to? Thanks! Ant |
Rule number 34 for antennas:
Don't try to evaluate an antenna on one one or two stations. Leave it up and use it over a period of days or weeks. Every antenna has it's strengths and weaknesses which leads to rule number 35 ... you can never have enough antennas ! jw wb9uai milwaukee |
ASW,
What you are missing is the Matching Transformer between the Antenna Element and your Coax Cable. NOTE: Before your buy or build a MW/SW Matching Transformer try using a simple TV 300 to 75 Ohm Matching Transformer to "Test" your Antenna Set-Up. 1. The Far-End of the "Speaker Wire" Antenna Element is Stripped, Twisted Together and Soldered. Then Sealed with Electrical Tape. 2. The Near-End of the "Speaker Wire" Antenna Element is Stripped and Connected to the Primary #9 Side of the Matching Transformer. Then Sealed with Electrical Tape. 3. The Secondary #1 Side of the Matching Transformer is Connected to the Coax Cable. One Lead to the Center Conductor Wire and the other Lead to the Coax Shield Wires. - - - At this "Junction" the the Coax Cable's Shield should be Grounded to a good Earht Grounding Point. (Ground Rod and Short Heavy Thick Ground Wire.) 4. The Coax Cable runs from the Antenna Element to the Radio/Receiver. A second Grounding Point should be used at the Radio/Receiver FWIW: You have now 'created' a "Closed Loop" (Thin, Flat and Elongated) Antenna Element (Balanced) that Matched-Up-To a Un-balanced Coax Cable with a Remote (Quite) Grounding Point. For the most part this is a Low Noise Antenna design. OBTW: For more SWL Antenna Ideas . . . - - - Check-Out the SWL Antennas and AM & FM Antennas eGroup on YAHOO ! GoTo= http://groups.yahoo.com/group/SWL-AM-FM-Antenna/ iane ~ RHF .. .. = = = "ASW" = = = wrote in message igy.com... *sigh* well that did not seem to work. I am being blown out by my local AM station. But I am still pretty dead on all the other AM stations. I cannot pick more than say 3 or so. Before it was about the same. But I all I seem to have done is increase the noise! I have some spurious interference every 60-70 Khz. This is from my power I am assuming. How do I get rid of it? I have it hooked up to about 50 foot of speaker wire. Which is in turn soldered to the center lead on my coax. The coax then goes into my reciever. Am I missing something? Thanks! .. |
ASW wrote:
I have alread about 50 feet of 50 Ohm RG-6 for the lead in. RG-6 is 75-ohm cable, but no need to worry. Art N2AH |
Harris wrote:
ASW wrote: I have alread about 50 feet of 50 Ohm RG-6 for the lead in. RG-6 is 75-ohm cable, but no need to worry. Art N2AH I use R6U coax made for satellite TV systems. I has good shielding and works well as the lead wire for my low noise inverted-L (Doty-L) antenna. R6U coax is 75-0hm and the radio (R8B) has a 50-ohm antenna input but the mismatch hardly matters for shortwave receiving. -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
could some one explain what An impedance matching transformer is and how i
could make one? thanks charles foster |
"chuck" wrote: could some one explain what An impedance matching transformer is and how i could make one? A random wire antenna fed at one end will present a high impedance (~2000 ohms). Most coaxial cables have a characteristic impedance of 50 or 75 ohms. To match the coax to the antenna, a matching transformer is used. See. http://www.hard-core-dx.com/nordicdx...eed/index.html Or do a Google search on: "9:1 balun" Art Harris N2AH |
CF,
I Am Glad You Asked :o) B A L U N - R E A D I N G - L I S T - (First Draft): The BALUN Defined: "A balun is a device that joins a balanced line (one that has two conductors, with equal currents in opposite directions, such as a twisted pair cable) to an unbalanced line (one that has just one conductor and a ground, such as a coaxial cable). A balun is a type of transformer: it's used to convert an unbalanced signal to a balanced one or vice versa. Baluns isolate a transmission line and provide a balanced output. A typical use for a balun is in a television antenna. The term is derived by combining balanced and unbalanced." http://searchnetworking.techtarget.c...342213,00.html "Baluns and ununs (unbalanced-to-unbalanced transformers) belong to a class of matching devices known as transmission line transformers. They transmit the energy from input to output by a transmission line mode instead of by flux linkages as in the case of conventional transformers. When properly designed, they can have extremely high efficiencies and very broad bandwidths. The theory of operation of these devices rests chiefly on that of chokes and transmission lines. A balun or unun is simply a choke that isolates the input from the output (thus only allowing transmission currents to flow) and a configuration of transmission lines." http://www.coilws.com/W2FMI.htm Balun Explained (WTH is a Balun) by G4NSJ http://www.g4nsj.co.uk/balun.shtml The Purpose for a Balun by John Doty "The purpose of a balun is to block common mode waves (current flowing in the same direction on both conductors of a transmission line) and pass differential mode waves (current flowing in opposite directions on the conductors)." http://www.hard-core-dx.com/nordicdx...ed/balun3.html Matching Less Important for Reception - by John Doty http://www.hard-core-dx.com/nordicdx...ed/balun5.html A Review of the ICE Model 180 Beverage/Longwire Matching Unit - - - by John Doty http://www.anarc.org/naswa/badx/ante...ing_xfrmr.html Low Noise Antenna - by John Doty http://www.anarc.org/naswa/badx/ante...e_antenna.html Grounding is Key to Good Reception - by John Doty http://www.anarc.org/naswa/badx/antennas/grounding.html Balun Measurements http://www.radioworks.com/nbalmeas.html Experiments on Remote Receiving Loops by Lyle Koehler [KØLR] (Using a Balun with a LW/LF Loop Antenna) http://members.aol.com/lwcanews/longwave/lf-loops.htm Fabricating Impedance Transformers for Receiving Antennas - - - May 2001 by Paul Bryant http://members.aol.com/DXerCapeCod/z_transformers.pdf Balun Core and Winding Methods http://www.catchnet.com.au/~rjandusimports/tut_11b.html Construction and Use of Broadband Transformers http://www.oselectronics.com/downloa...ansformers.pdf Winding Your Own Transformers http://www2.hard-core-dx.com/nordicd...ansformer.html TRANSMITTER-RATED TOROIDAL BALUN KITS, TOROIDS & ENAMELLED WIRE PACKS http://www.ozgear.com.au/balun/ToroidalBalunKits.htm Binocular Cores vs Toroidal Cores http://lists.contesting.com/archives.../msg00001.html RFI - Ferrites - Baluns - Iron Powder http://www.sadona.com/news/news5.html Baluns and Common Mode Noise Isolation http://www.w8ji.com/common-mode_noise.htm Doug's Antenna Transformer Page Antenna Transformer Construction and Testing http://users.netonecom.net/~swordman/Radio/unun.htm Transmission Line Transformers "THEORY" http://www.bytemark.com/products/tlttheory.htm RF Transformers by Mini-Circuits http://www.minicircuits.com/appnote/tran14-2.pdf 1:1 Balun http://www.qsl.net/iz7ath/web/02_bre.../pag09_eng.htm 4:1 TRANSMISSION LINE BALUN http://www.qsl.net/iz7ath/web/02_bre.../pag10_eng.htm 4:1 balun for 160 to 10 meters http://www.hard-core-dx.com/nordicdx.../4_1balun.html Putting a Balun and a Tuner Together - by Kevin Schmidt [W9CF] http://fermi.la.asu.edu/w9cf/articles/balun/ 4:1 QRP Balun by C. C. (Clay) Wynn N4AOX http://kg8ih.cit.cwru.edu/w8edu/proj...ynn-balun.html W2FMI Transmission Line Transformers (BalUns & UnUns) - - - by Jerry Sevick http://www.coilws.com/W2FMI.htm Homebrew a 4 To 1 Balun - by Mike Martell [N1HFX] http://www.rason.org/Projects/balun/balun.htm Beverage Matching/Tuning/Balun - by Mauno Ritola http://dallas.hard-core-dx.com/archi.../msg02536.html The Loaded Dog 1:1 Antenna Balun http://www.geocities.com/the_loaded_.../project1.html The BALUN - by Ian C. Purdie [VK2TIP] http://my.integritynet.com.au/purdic/baluns.htm The Choke Balun at Electronics Tutorials http://www.electronics-tutorials.com...hoke-balun.htm Toridal Balun Winding - by W8JI http://www.w8ji.com/toroid_balun_winding.htm Balun and Core Selection - by W8JI http://www.w8ji.com/core_selection.htm HOW TO Construct a Guanella Balun - by Ralph Holland [VK1BRH] (A Cost Effective Current-Mode 1:4 Balun) http://www.arising.com.au/people/Hol...h/CM4Balun.htm Impedance Matching Transformer (IMT) - by Paul Ormandy [NZRDXL] http://radiodx.com/spdxr/Baluns.htm Baluns, Earth and More… - by Paul Ormandy [NZRDXL] http://radiodx.com/spdxr/Some_Important_Aerial.html Impedance Matching Transformers for Receiving Antennas at Medium and Lower Shortwave Frequencies June 2003 by Bill Bowers, John Bryant and Nick Hall-Patch [VE7DXR] http://radiodx.com/spdxr/media/imt_doc1.doc Magnetic Longwire Balun (MLB) Palomar http://www.palomar-engineers.com/MLB-1/mlb-1.html MLB for DX-Antennas - by "VK3KCG" Australia http://dxantennas.com/wst_page4.php The Magnetic Longwire Balun (MLB) = = = A "CON" or Not ? http://www.hard-core-dx.com/nordicdx...d/magbal1.html The Complete Answer to your Interference Problem the "LWC System" for Long Wire Antennas http://ourworld.compuserve.com/homep...kit/lwcsys.htm W1CG - Balun Kit http://www.njqrp.org/balun/ iane ~ RHF .. .. = = = "chuck" = = = wrote in message ... could some one explain what An impedance matching transformer is and how i could make one? thanks charles foster .. |
| All times are GMT +1. The time now is 09:14 AM. |
Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
RadioBanter.com