kenwood r-2000
about dipole antennas?
Monitoring times.com suggests a dipole design that they claim covers 1.8 mhz to 30 mhz. One leg is 44 feet and the other is 90 feet with a 4.1 balon in the feed line. My yard will not accomidate this length and wondered if I installed it as a dipole where only 67 linear feet would be needed ? I’m just now getting back into S/W listening after a 55 year break and I have forgotten just about everything. I just purchased a “mint” Kenwood R-2000 which should provide a good “start” back into this interest. Any and all suggestions would be greatly appreciated. Thanks, Rick
Well for shortwave listening, you won’t need an antenna that I believe is described here. It sounds like a Windom, which is fed off center, the balun is needed to get a balanced feed from something like a 300 ohm impedance antenna to a 75 ohm impedance coax.
According to the old Novice exam, we use impedance matching to allow maximum power transfer. That is very important for a transmitter, or a transceiver, but not so important for a receiver. For a receiver, you can pretty much run a longwire with two insulators at the ends, a feedline running from the longwire side, not the anchor side, to the antenna input of the receiver. If you are using a two conductor feedline, the one side is connected to the longwire side, and the ground or other lead (if its coax or twinlead) is connected to the other to the other connection. The HRO page said that it will accommodate either a twinlead or a coax connection.
A halfwave dipole for 40 Meters (7 MHz band) is just under 67 feet. Its characteristic impedance is about 30 Ohms, so its a reasonable match for a 52 Ohm coax, like RG-58 or RG-8. It will receive just fine across the MW and SW bands,.
The best advice is to get it high, and as long as you can manage. A Flat kind of antenna, rather than a vertical, will be better, since verticals are sort of like magnets for noise.
These links may be some help. The first is Amateur Electronic Supply, and the third is Ham Radio Outlet. Since you have been an SWL before, you already know that hams and SWLs often get their gear from the same places. You can get your antenna wire from Lowe’s or Home Depot. I’ve bought wire successfully from them. The stuff was cheaper then, I bought a 100 foot roll, years ago, and just used up the last of it. I wish now, I’d bought two 100 foot rolls at that price now, believe me. You can still buy it by the foot, of course.
the second link is an information page about your radio.
Have fun, and check out the new stuff that’s out there. The Russian woodpecker is gone from 40 meters, Hams now have a few channels available to them on 60 meters, but Upper Sideband, rather than the protocol of LSB below 14 MHz, USB above.
The fourth link is the US Ham frequency allocations.
AB9BD licensed since 1968
|
|
Kenwood Model MC-50 Ham Radio Microphone $58.50 |
|
|
Kenwood Ham Radio microphone Model MC-50 Amateur base station in Working order $89.95 |
|
|
Kenwood TKR-901 900 MHz HAM Repeater – Super Clean! $650.00 |
|
|
Mini Speaker Mic for Kenwood Ham Radio TK3207/2207/3102 $8.00 |
|
|
J0075A CB Radios Mini External Speaker NSP-150v ham For Kenwood Motorola ICOM $12.99 |
|
|
J0076A CB Radios Mini External Speaker NSP-100 ham For Kenwood Motorola ICOM $11.99 |
|
|
New Yaesu Kenwood Icom Ham Radio 8 wire Mic Cord CB Microphone Mobile Base Opek $9.95 |
|
|
2 sets Icom,Kenwood,Yaesu ham radio DC power connector, T-shaped 12 volt (2 pcs) $10.00 |
|
|
Kenwood TK-90 * HF Transceiver * / HAM – COMMERCIAL * SSB/CW/FSK/AM $999.00 |
|
|
Serial Cable, Dual DB-9 F/F for Kenwood TS-480, TS-570, TS-870, & TS-2000 Ham $9.95 |
|
|
CB Radios Mini External Speaker NSP-150v ham For Kenwood Motorola ICOM Yaesu $11.39 |
|
|
CB Radios Mini External Speaker NSP-100 ham For Kenwood Motorola ICOM Yaesu $10.16 |
|
|
KENWOOD HAM RADIO $130.00 |
|
|
Kenwood Trio R-1000 HF Ham Shortwave Receiver $127.50 |
|
|
J0075A CB Radios Mini External Speaker NSP-150v ham For Kenwood Motorola ICOM $11.99 |
|
|
J0076A CB Radios Mini External Speaker NSP-100 ham For Kenwood Motorola ICOM $10.99 |
|
|
RETECH CB-02 mini EXTERNAL SPEAKER For YAESU KENWOOD ICOM Mobile HAM CB Radio $8.99 |
|
|
BNC Mobile Car dual Band Anternna KENWOOD ICOM YAESU VERTEX HAM Handheld Radio $19.99 |
|
|
RETECH CB-10 Speaker For KENWOOD KES3 SP50 YAESU MLS-100 ICOM IC-SP10 Ham Radio $14.99 |
|
|
JDI Desktop Desk Mic MICROPHONE 8 pin for KENWOOD HAM RADIO ….etc $59.95 |
|
|
KENWOOD INTERFACE IF-232C PC CONTROLED UNIT FOR HAM RADIO WORKS WITH TS-850S $12.50 |
|
|
Kenwood TS-430S TS 430 HF HAM Amateur Radio Transceiver In Original Box + Mic! $305.00 |
|
|
Handheld Speaker Mic for KENWOOD BAOFENG QANSHENG WOUXUN PUXING Ham Radio J0156A $11.27 |
|
|
Handheld Speaker Mic for KENWOOD BAOFENG QANSHENG WOUXUN PUXING Ham Radio J0156A $11.89 |
|
|
J0156A Handheld Speaker Mic for KENWOOD BAOFENG QANSHENG WOUXUN PUXING Ham Radio $11.99 |
|
|
Handheld Speaker Mic for KENWOOD BAOFENG QANSHENG WOUXUN PUXING Ham Radio J0156A $11.99 |
|
|
Ear Hanger Headset(adjustable mic)for Kenwood Ham Radio $4.00 |
|
|
Mini Speaker Mic for Kenwood Ham Radio TK3207/2207/3102 $4.99 |
|
|
KENWOOD ham radio T-shaped 12 volt DC power connector $7.00 |
|
|
Yaesu Kenwood Icom 8 Pin Mic Ham Radio cord Extension $119.99 |
|
|
Kenwood THK20A 5.5 Watt VHF Two Way Portable Hand Held Amateur 2 Meter Ham Radio $169.95 |
|
|
Kenwood TH-79A 440 2 meter Ham Radio Charger Head Sets xtra battery C all Pix $143.50 |
|
|
1.2 GHZ HAM RADIO REPEATER KENWOOD TM 742A 741A MICROWAVE BIRD WATT METER SLUG $276.00 |
|
|
440mhz HAM RADIO KENWOOD TM 742A 741 REPEATER RF duplexer w/ BNC FREShp $115.00 |
|
|
Kenwood TR 7950, Ham Radio 2m, Transceiver, TR7950, 2 meter $9.99 |
|
|
Kenwood TS-440S TS 440 SAT HF Ham Radio Transceiver Amateur Transmitter Receiver $400.00 |
|
|
Kenwood TM 741 742 POLICE & FBI SCANNER Ham Radio TELEPHONE FAN ASSEMBLY FRESHP $18.00 |
|
|
Kenwood TM 642 742 POLICE & FBI SCANNER Ham Radio TELEPHONE COVERS FRESHP $18.00 |
|
|
Kenwood TM 641 741 POLICE & FBI SCANNER Ham Radio TELEPHONE COVERS FRESHP $18.00 |
|
|
8 Pin Mic Plug’s – Quantity Of Three – Fits Kenwood Icom Ham Radio’s $7.25 |
|
|
Ham Radio Speaker Microphone for KENWOOD HT $18.99 |
|
|
Kenwood Trio TS-180X Ham Transceiver – Very Rare Model – Works Great! $162.50 |
|
|
Kenwood Icom Yaesu Ham Radio Power cord Cable Boot plug $4.20 |
|
|
Kenwood MC-60 Microphone Ham Radio Equipment $89.95 |
|
|
KENWOOD DUAL BAND HAM RADIO, MODEL. #TM-V7A-UHF/VHF, WITH CROSSBAND REPEAT $152.50 |
|
|
Kenwood VFO-820 Variable Frequency Oscillator Ham Radio $25.49 |
|
|
KENWOOD Ham Radio DXCC World Map Large 40×28 vintage 1990 Call Signs SWL $4.95 |
|
|
Kenwood TS-440S HAM HF Transceiver $202.50 |
|
|
Kenwood MC-50 Ham Radio Microphone $21.50 |
|
|
Kenwood SWC-3 Coupler Sensor Ham Radio $25.00 |
|
|
KENWOOD STYLE EXTERNAL SPEAKER ham cb communication 2 SPEAKERS $21.97 |
|
|
1.2 GHZ HAM RADIO REPEATER KENWOOD TM 742A 741A MICROWAVE BIRD WATT METER SLUG $120.00 |
|
|
440mhz HAM RADIO KENWOOD TM 742A 741 REPEATER RF duplexer w/ BNC FREShp $75.00 |
|
|
Kenwood TS-440S HAM HF Transceiver $356.00 |
|
|
KENWOOD TH-F6A AMATEUR HAM RADIO DATACHART $9.80 |
|
|
Kenwood TK-7160 VHF Comercial Ham Radio Transceiver w/programming software $399.95 |
|
|
KENWOOD TM-731A DUAL BAND TRANSCEIVER HAM AMATEUR RADIO 2m 70cm 144 440 $50.00 |
|
|
Kenwood Th-79 handheld amatuer ham transciever radio $75.00 |
|
|
VINTAGE “KENWOOD” DYNAMIC MICROPHONE FOR HAM RADIO KINGS PJ-068 M642/5-1 $9.99 |
|
|
NEW “KENWOOD” TU-7 TONE UNIT FOR HAM RADIO $9.99 |
|
|
Kenwood TS-440S Ham Radio Transceiver $100.95 |
|
|
Kenwood TM-732a Ham Radio Duel Band Radio $56.00 |
|
|
Kenwood TS-700A TS- 700 Factory Service Manual VHF 2 Meter All Mode Ham Radio $24.77 |
|
|
Kenwood TS-430S Ham Radio, EXCELLENT condition!!! $185.00 |
|
|
VINTAGE “KENWOOD” DYNAMIC MICROPHONE FOR HAM RADIO IMPEDANCE 600 $9.99 |
|
|
“KENWOOD” MC-48B DTMF 8 PIN MICROPHONE FOR HAM RADIO $9.99 |
|
|
“KENWOOD” 8 PIN ELECTRET CONDENSER MIC FOR HAM RADIO $9.99 |
|
|
“KENWOOD” 8 PIN DTMF 20 KEY HAM RADIO MICROPHONE $9.99 |
|
|
“KENWOOD” MC-30S HANDHELD DYNAMIC HAM RADIO 5 PIN $9.99 |
|
|
SET OF 2 “KENWOOD” COMMUNICATION SPEAKERS FOR HAM RADIO $9.99 |
|
|
“KENWOOD” 8 PIN MC-48 HAM RADIO MICROPHONE $9.99 |
|
|
Super Speaker Mic Kenwood Puxing Wouxun PX-888 JT-988 TH-UVF1 KGUVD1P ham radio $18.98 |
|
|
2-Wire Earphone for Kenwood Ham Radios w/ separate PTT $14.95 |
|
|
USB Programming Cable+Driver Software for Kenwood Puxing Linton Wouxun Ham Radio $19.99 |
|
|
Kenwood DRU-2 Digital Recording Unit TS-850S TS-870S TS-450S TS-950SDX Ham TS $0.99 |
|
|
PAIR OF KENWOOD TK-8180 UHF MOBILE TWO WAY HAM RADIOS $99.00 |
|
|
VINTAGE KENWOOD TR-2600A Mobile FM Amateur HAM 2-Meter TRANSCEIVER Radio $49.00 |
|
|
UHF ANTENNA SMA-F fits KENWOOD TK-3300 KRA-23 KRA-27 450 – 520 MHz Ham radio $5.99 |
|
|
Vintage Kenwood TR-2600A Mobile FM Amateur HAM 2-Meter Transciever Radio w/Mic $150.00 |
|
|
Overhead Dual Speaker PTT Headset for Kenwood Ham Radio $8.50 |
|
|
J0075A CB Radios Mini External Speaker NSP-150v ham For Kenwood Motorola ICOM $11.27 |
