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#1
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Hi,
I have a Kenwood R-5000 and I have a long wire antenna. There are two screw terminals in the back of the receiver for a wire antenna. One screw is labeled: "50 (ohms)" the other screw is labeled "500 ohms" which is the proper lead for a wire antenna? Thank you, Mike McM. |
#2
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Mike M. wrote:
Hi, I have a Kenwood R-5000 and I have a long wire antenna. There are two screw terminals in the back of the receiver for a wire antenna. One screw is labeled: "50 (ohms)" the other screw is labeled "500 ohms" which is the proper lead for a wire antenna? Thank you, Mike McM. Theoretically the 500 Ohm is for wire antennas. Some radios have better static protection on one or the other RF input, so that may be a factor as well. |
#3
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On Mar 2, 6:22*am, "Mike M." wrote:
- Hi, - I have a Kenwood R-5000 and I have a long wire antenna. -*There are two screw terminals in the back of the receiver - for a wire antenna. - One screw is labeled: "50 (ohms)" the other screw is labeled - "500 ohms" which is the proper lead for a wire antenna? - - Thank you, - Mike McM. Mike McM, On the Kenwood R-5000 Receiver that is the Antenna # 2 Terminal Connections : http://www.universal-radio.com/catal...vr/r5000io.jpg Red 500 Ohms Antenna on the Left Black [GRN] in the Center for Ground Red 50 Ohms Antenna on the Right TIP - Make sure that you Select the [ANT 2] Button on the Front of the Radio to use ANT 2 {Antenna # 2} on the Rear. http://www.universal-radio.com/catal...r/r5000cs.html First I would recommend that you 'connect' a Ground Wire to the Kenwood R-5000 Receiver's Black [GRN] Ground Terminal before you connect any Wire Antenna to the Radio. The try connecting the 'Long Wire' Antenna first to the Red 500 Ohms Antenna Terminal -and- Then to the Red 500 Ohms Antenna Terminal. Ensure that you Try this 'Long Wire' Antenna across the AM / Medium Wave and Shortwave Bands from 500 kHz to 30 MHz Recording your Reception and Signal Levels for each Band. * Most of the Time you will find that a 'Long Wire' Antenna gives the best performance when connected to the Red 500 Ohms Antenna Terminal with a Ground connected to the GRN Terminal. * -But- You may find that for your Radio and 'Long Wire' Antenna you get the best performance when connected to the Red 50 Ohms Antenna Terminal with a Ground connected to the GRN Terminal. -note- You will not know until you try both Red Terminals. * * Or that on some Shortwave Radio Bands the 500 Ohm Terminal -or- the 50 Ohm Terminal works better - who knows. BACK OF THE RADIO MATCHING TRANSFROMER : Build a simple Back-of-the-Radio Matching Transformer using an old 3~6 Inch Ferrite Rod from an AM/FM Radio. * Ferrite Rod that is 3 to 6 Inches long. * 30 Turns of Red #24 Stranded Hook-Up Wire wrapped tightly and evenly and centered on the Ferrite Rod. * 10 Turns of Black #24 Stranded Hook-Up Wire wrapped tightly and evenly and centered over the Red Wire. Back-of-the-Radio 9:1 Matching Transformer 3~6 Inch Ferrite Rod from an old Pocket AM/FM Radio ----------/////////////////////////////---------- Red Wire ----------/--/--/--/--/--/--/--/--/--/----------- Black Wire Connect the Black Wires : One to the Red 50 Ohm Terminal and the 'other' to Black [GRN] Terminal. Connect the Red Wires : One to the 'Long Wire' Antenna and the 'other' to Ground Wire. The Plus - Using a Back-of-the-Radio Matching Transformer with a 'Long Wire' Antenna and Ground usually results in more consistant Signal Levels across the Shortwave Bands and reduced Noise Levels too. Hello - Everyone 'interested' in the Kenwood R-5000 Communications Receiver ? - Then Check-Out the Kenwood R-5000 Communications Receiver Group. KENWOOD = http://groups.yahoo.com/group/*kenwood-r5000/ |
#4
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In article
, RHF wrote: On Mar 2, 6:22*am, "Mike M." wrote: - Hi, - I have a Kenwood R-5000 and I have a long wire antenna. -*There are two screw terminals in the back of the receiver - for a wire antenna. - One screw is labeled: "50 (ohms)" the other screw is labeled - "500 ohms" which is the proper lead for a wire antenna? - - Thank you, - Mike McM. Mike McM, On the Kenwood R-5000 Receiver that is the Antenna # 2 Terminal Connections : http://www.universal-radio.com/catal...vr/r5000io.jpg Red 500 Ohms Antenna on the Left Black [GRN] in the Center for Ground Red 50 Ohms Antenna on the Right The screw labeled RHF is a nut. Get lost Troll. -- Telamon Ventura, California |
#5
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In article
, "Mike M." wrote: Hi, I have a Kenwood R-5000 and I have a long wire antenna. There are two screw terminals in the back of the receiver for a wire antenna. One screw is labeled: "50 (ohms)" the other screw is labeled "500 ohms" which is the proper lead for a wire antenna? Thank you, Mike McM. Use coax for connection to the 50 ohm terminal and GND. For coax the outer shield is connected to GND and the coax center wire would be connected to the 50 ohm terminal. Most coax is 50 or 75 ohms. Single wire antennas are in the hundreds of ohms. You can connect the signal wire antenna directly to the 500 ohm terminal. If you do this though you should connect a ground to the GND terminal. The ground should be a ground for the antenna only. You can connect a wire to this ground terminal to a ground rod out in the yard. This will work well if you are in a low noise area. If you have many RF noise makers in your house then you might want a different connect scheme. Let us know how this works for you and if you have noise problems people in the news group can make more suggestions. -- Telamon Ventura, California |
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