5:1 CUBE™ Unun – Model CU-5-1500 (50:250 Ohm, 1.8-61 MHz, 1.5KW PEP)
Application. For traveling wave, end fed or portable 20-31 foot vertical antennas the 5:1 unun makes a good transformer for converting 50 ohm coax to a 250 ohm feed point. If you use the antenna on multiple bands, the feed point impedance may not always be 250 ohms and use of the unun at high (>350 ohms) or low (<100 ohms) will require reduced power input or the unun may have its power ratings exceeded and damage to the unun may occur. The (5:1 conversion ratio will change for loads other than 250 ohms unbalanced.
Typical application:
Also available as a balanced output – CB-5-1500
Quick, Easy & Affordable Antennas and RFI Solutions for everybody!
Helpful Technical Guides - Learn how to select, configure and use our products in your station -FREE Downloads
HF WIRE ANTENNAS
OVER 10,000 Installed worldwide!
BULLET End Fed Antennas
Shorter, safer, more bands in less space than EFHW
Off Center Fed Dipoles
Traditional dipole style but cut for more bands then other vendors!
End Fed OCF
160-6M, 80-6M, 40-6M or 20-6M but only 2 supports, shorter than EFHW - popular with POTA ops
Full Wave Loop
Quieter on receive and multi-directional gain on higher bands, no need to rotate!
ZS6BKW Multi-band Ladder Line Fed
No tune on 5 bands!
Broadband Terminated Dipoles (BBTD, T2FD)
DIY Parts for ALE, MARS, Hi duty cycle data modes
ANTENNA ACCESSORIES
Coax Common Mode Chokes - Slip On, Snap On, Jumper, Mini/Maxi-Choker/Line Isolator, DIY Ferrite Choke Kits
Noise Filters - Coax, AC/DC Power 100 KHz - 150 MHz, up to -48 dB noise suppression - hear DX again!
Baluns & Ununs (1:1-81:1 ratios) for RX, 100/500/1500/5000 Watts including Hybrids (with choke) and Multi-Ratio
RFI SOLUTIONS
RF Detectors - SIGNALPEN(TM) PENCIL SIZE RF Detector, 60 Hz to 5 GHz, Miliwatts to Kilowatts, Direct Contact or Inductive Detector, No Battery & Fits in Your Shirt Pocket!
RFI Solutions - Consumer Electronics, Ham Radio, Computer, Audio/Home Theater, Wall Warts, Solar and more!
Ferrite Products- Rings, Snap On, Slip On, useful from 150KHz - 2 GHZ, Mixes 31, 43, 52, 61, 75, 77
Radio Transceiver/Linear Amplifier RFI Kits - All Brands, VLF to UHF, QRP to Multi-KW
FREE USPS Ground SHIPPING to USA Destinations for orders over $100!
SELECT A CATEGORY TO EXPLORE
Featured Products
On Sale
Best Off Center Fed Dipole Antenna, 80-6 Meters (9 bands including 15 Meters), 75/80M Optimized, 500/1.5KW/5KW PEP rated - FREE shipping in USABest Off Center Fed Dipole Antenna, 80-6 Meters (9 bands including 15 Meters), 75/80M Optimized, 500/1.5KW/5KW PEP rated - FREE shipping in USAIncludes 15 MetersSKU PAL-OCF8006-500RCList price $429.95 Save 44%$239.95On Sale
Best Off Center Fed Dipole Antenna, 80-6 Meters (9 bands-including 15 meters), 500/1.5KW/5KW PEP rated - FREE shipping in USABest Off Center Fed Dipole Antenna, 80-6 Meters (9 bands-including 15 meters), 500/1.5KW/5KW PEP rated - FREE shipping in USAIncludes 15 MetersSKU PAL-OCF8010-500List price $329.95 Save 42%$189.95On Sale
Best Small Off Center Fed Dipole Antenna, 20-6 Meters, 100/500/1.5KW/5KW PEP rated, POTA, Field Day Ready - FREE shipping in USABest Small Off Center Fed Dipole Antenna, 20-6 Meters, 100/500/1.5KW/5KW PEP rated, POTA, Field Day Ready - FREE shipping in USASKU PAL-OCF2006-500List price $199.95 Save 30%$139.95On Sale
Bullet End Fed Antenna System - 71' Antenna (80-6 meters), Snap On Choke, Split Pulleys for easy Setup - 500 Watt PEP - FREE USA ShippingBullet End Fed Antenna System - 71' Antenna (80-6 meters), Snap On Choke, Split Pulleys for easy Setup - 500 Watt PEP - FREE USA ShippingSKU BAS-71XList price $159.95 Save 13%$139.95On Sale
Bullet End Fed OCF Antenna System, 100-1500 Watt Options, 25 Feet, 20-6 meters+WARC, Vertical Radiator for Easy DX, SOTA, POTABullet End Fed OCF Antenna System, 100-1500 Watt Options, 25 Feet, 20-6 meters+WARC, Vertical Radiator for Easy DX, SOTA, POTASKU BULLET-2006-100List price $179.95 Save 33%$119.95On Sale
Bullet End Fed OCF Antenna System, 100-5000 Watt Options, 55 Feet, 40-6 meters Including WARC, Vertical Radiator for Easy DX, POTA, SOTABullet End Fed OCF Antenna System, 100-5000 Watt Options, 55 Feet, 40-6 meters Including WARC, Vertical Radiator for Easy DX, POTA, SOTASKU BULLET-4006-100List price $189.95 Save 26%$139.95On Sale
Bullet End Fed OCF Antenna System, 100/500/1500/5000 Watt Options, 95 Feet, 80-6 Meters + WARC, Vertical Radiator for Easy DXBullet End Fed OCF Antenna System, 100/500/1500/5000 Watt Options, 95 Feet, 80-6 Meters + WARC, Vertical Radiator for Easy DXSKU BULLET-8006-100List price $239.95 Save 25%$179.95On Sale
FSB31-1/2, ID=1/2", RFI Filter Range 1-300 MHz - Bulk 10 PackFSB31-1/2, ID=1/2", RFI Filter Range 1-300 MHz - Bulk 10 PackSKU FSB31-1/2-10List price $55.00 Save 9%$49.95On Sale
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Bulk Pack of 10FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Bulk Pack of 10SKU F240-31-10List price $100.00 Save 10%$89.95On Sale
Ferrite Mini Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 10 filters (3/8, 1/2, 3/4)Ferrite Mini Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 10 filters (3/8, 1/2, 3/4)SKU FMSCP-31-10List price $55.95 Save 11%$49.95On Sale
Ferrite Ring and Snap On Combo Pack - 10 Rings (1.4" ID) + 10 Snap On Beads (1/2" ID) - Mix 31 (RFI Range 1-300 MHz) FREE USA SHIPPINGFerrite Ring and Snap On Combo Pack - 10 Rings (1.4" ID) + 10 Snap On Beads (1/2" ID) - Mix 31 (RFI Range 1-300 MHz) FREE USA SHIPPINGSKU FRSCP-31-20List price $155.00 Save 10%$139.95On Sale
Ferrite Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 1/4, 3/8, 1/2, 3/4 - 22 filtersFerrite Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 1/4, 3/8, 1/2, 3/4 - 22 filtersSKU FSCP-31-22List price $108.00 Save 12%$95.00
MINI-BALUN 1:1 Coax Interface to Ladder Line, Dipole elements, 500 Watts PEP, up to -38Db Common Mode Rejection, 1-61 MHz, Flagpole, Dipole, Beam and G5RV/ZS6BKW AntennasMINI-BALUN 1:1 Coax Interface to Ladder Line, Dipole elements, 500 Watts PEP, up to -38Db Common Mode Rejection, 1-61 MHz, Flagpole, Dipole, Beam and G5RV/ZS6BKW AntennasSKU MB-1-500SS$69.95On Sale
Multi-Ring/Multi-Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 17 filtersMulti-Ring/Multi-Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 17 filtersSKU MRSCP-31-17List price $112.00 Save 15%$95.00On Sale
Off Center Fed Dipole Antenna, 160-10 Meters (12 bands), 160, 80M Compensators, 500/1.5KW/5KW PEP rated - FREE shipping in USAOff Center Fed Dipole Antenna, 160-10 Meters (12 bands), 160, 80M Compensators, 500/1.5KW/5KW PEP rated - FREE shipping in USASKU PAL-OCF16006RC-500List price $459.95 Save 30%$319.95
RFI Common Mode Noise Filter Kits for Generic Antenna Switches - Isolate Non-Selected Coax Braid Noise!RFI Common Mode Noise Filter Kits for Generic Antenna Switches - Isolate Non-Selected Coax Braid Noise!Suppress Unwanted Noise & RFISKU RFI-AS-GEN-2$129.95Introductory Price
SIGNALPEN™ - PENCIL SIZE RF DETECTOR LIGHT, 60 Hz to 1.2 GHz or 2.4-6 GHz, MW - KW, Direct Contact or Inductive Detector. HF, VHF ,UHF and 1.2GHz. No Battery! Fits in Shirt Pocket!SIGNALPEN™ - PENCIL SIZE RF DETECTOR LIGHT, 60 Hz to 1.2 GHz or 2.4-6 GHz, MW - KW, Direct Contact or Inductive Detector. HF, VHF ,UHF and 1.2GHz. No Battery! Fits in Shirt Pocket!SKU SIGNALPEN$49.95On Sale
ZS6BKW Center Fed Antenna, 80-6 Meters, 500/1.5KW/5KW PEP rated - FREE shipping in USAZS6BKW Center Fed Antenna, 80-6 Meters, 500/1.5KW/5KW PEP rated - FREE shipping in USASKU PAL-ZS68006-500List price $199.95 Save 15%$169.95
Quick, Easy & Affordable Antennas and RFI Solutions for everybody!
Helpful Technical Guides - Learn how to select, configure and use our products in your station -FREE Downloads
HF WIRE ANTENNAS
OVER 10,000 Installed worldwide!
BULLET End Fed Antennas
Shorter, safer, more bands in less space than EFHW
OVER 10,000 Installed worldwide!
BULLET End Fed Antennas
Shorter, safer, more bands in less space than EFHW
Off Center Fed Dipoles
Traditional dipole style but cut for more bands then other vendors!
End Fed OCF
160-6M, 80-6M, 40-6M or 20-6M but only 2 supports, shorter than EFHW - popular with POTA ops
Traditional dipole style but cut for more bands then other vendors!
End Fed OCF
160-6M, 80-6M, 40-6M or 20-6M but only 2 supports, shorter than EFHW - popular with POTA ops
Full Wave Loop
Quieter on receive and multi-directional gain on higher bands, no need to rotate!
ZS6BKW Multi-band Ladder Line Fed
No tune on 5 bands!
Broadband Terminated Dipoles (BBTD, T2FD)
DIY Parts for ALE, MARS, Hi duty cycle data modes
Quieter on receive and multi-directional gain on higher bands, no need to rotate!
ZS6BKW Multi-band Ladder Line Fed
No tune on 5 bands!
Broadband Terminated Dipoles (BBTD, T2FD)
DIY Parts for ALE, MARS, Hi duty cycle data modes
ANTENNA ACCESSORIES
Coax Common Mode Chokes - Slip On, Snap On, Jumper, Mini/Maxi-Choker/Line Isolator, DIY Ferrite Choke KitsNoise Filters - Coax, AC/DC Power 100 KHz - 150 MHz, up to -48 dB noise suppression - hear DX again!
Baluns & Ununs (1:1-81:1 ratios) for RX, 100/500/1500/5000 Watts including Hybrids (with choke) and Multi-Ratio
RFI SOLUTIONS
RF Detectors - SIGNALPEN(TM) PENCIL SIZE RF Detector, 60 Hz to 5 GHz, Miliwatts to Kilowatts, Direct Contact or Inductive Detector, No Battery & Fits in Your Shirt Pocket!
RFI Solutions - Consumer Electronics, Ham Radio, Computer, Audio/Home Theater, Wall Warts, Solar and more!
Ferrite Products- Rings, Snap On, Slip On, useful from 150KHz - 2 GHZ, Mixes 31, 43, 52, 61, 75, 77
Radio Transceiver/Linear Amplifier RFI Kits - All Brands, VLF to UHF, QRP to Multi-KW
FREE USPS Ground SHIPPING to USA Destinations for orders over $100!
SELECT A CATEGORY TO EXPLORE
Featured Products
On Sale
Best Off Center Fed Dipole Antenna, 80-6 Meters (9 bands including 15 Meters), 75/80M Optimized, 500/1.5KW/5KW PEP rated - FREE shipping in USA
Best Off Center Fed Dipole Antenna, 80-6 Meters (9 bands including 15 Meters), 75/80M Optimized, 500/1.5KW/5KW PEP rated - FREE shipping in USA
Includes 15 Meters
SKU PAL-OCF8006-500RC
List price $429.95
Save 44%
$239.95
On Sale
Best Off Center Fed Dipole Antenna, 80-6 Meters (9 bands-including 15 meters), 500/1.5KW/5KW PEP rated - FREE shipping in USA
Best Off Center Fed Dipole Antenna, 80-6 Meters (9 bands-including 15 meters), 500/1.5KW/5KW PEP rated - FREE shipping in USA
Includes 15 Meters
SKU PAL-OCF8010-500
List price $329.95
Save 42%
$189.95
On Sale
Best Small Off Center Fed Dipole Antenna, 20-6 Meters, 100/500/1.5KW/5KW PEP rated, POTA, Field Day Ready - FREE shipping in USA
Best Small Off Center Fed Dipole Antenna, 20-6 Meters, 100/500/1.5KW/5KW PEP rated, POTA, Field Day Ready - FREE shipping in USA
SKU PAL-OCF2006-500
List price $199.95
Save 30%
$139.95
On Sale
Bullet End Fed Antenna System - 71' Antenna (80-6 meters), Snap On Choke, Split Pulleys for easy Setup - 500 Watt PEP - FREE USA Shipping
Bullet End Fed Antenna System - 71' Antenna (80-6 meters), Snap On Choke, Split Pulleys for easy Setup - 500 Watt PEP - FREE USA Shipping
SKU BAS-71X
List price $159.95
Save 13%
$139.95
On Sale
Bullet End Fed OCF Antenna System, 100-1500 Watt Options, 25 Feet, 20-6 meters+WARC, Vertical Radiator for Easy DX, SOTA, POTA
Bullet End Fed OCF Antenna System, 100-1500 Watt Options, 25 Feet, 20-6 meters+WARC, Vertical Radiator for Easy DX, SOTA, POTA
SKU BULLET-2006-100
List price $179.95
Save 33%
$119.95
On Sale
Bullet End Fed OCF Antenna System, 100-5000 Watt Options, 55 Feet, 40-6 meters Including WARC, Vertical Radiator for Easy DX, POTA, SOTA
Bullet End Fed OCF Antenna System, 100-5000 Watt Options, 55 Feet, 40-6 meters Including WARC, Vertical Radiator for Easy DX, POTA, SOTA
SKU BULLET-4006-100
List price $189.95
Save 26%
$139.95
On Sale
Bullet End Fed OCF Antenna System, 100/500/1500/5000 Watt Options, 95 Feet, 80-6 Meters + WARC, Vertical Radiator for Easy DX
Bullet End Fed OCF Antenna System, 100/500/1500/5000 Watt Options, 95 Feet, 80-6 Meters + WARC, Vertical Radiator for Easy DX
SKU BULLET-8006-100
List price $239.95
Save 25%
$179.95
On Sale
FSB31-1/2, ID=1/2", RFI Filter Range 1-300 MHz - Bulk 10 Pack
FSB31-1/2, ID=1/2", RFI Filter Range 1-300 MHz - Bulk 10 Pack
SKU FSB31-1/2-10
List price $55.00
Save 9%
$49.95
On Sale
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Bulk Pack of 10
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Bulk Pack of 10
SKU F240-31-10
List price $100.00
Save 10%
$89.95
On Sale
Ferrite Mini Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 10 filters (3/8, 1/2, 3/4)
Ferrite Mini Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 10 filters (3/8, 1/2, 3/4)
SKU FMSCP-31-10
List price $55.95
Save 11%
$49.95
On Sale
Ferrite Ring and Snap On Combo Pack - 10 Rings (1.4" ID) + 10 Snap On Beads (1/2" ID) - Mix 31 (RFI Range 1-300 MHz) FREE USA SHIPPING
Ferrite Ring and Snap On Combo Pack - 10 Rings (1.4" ID) + 10 Snap On Beads (1/2" ID) - Mix 31 (RFI Range 1-300 MHz) FREE USA SHIPPING
SKU FRSCP-31-20
List price $155.00
Save 10%
$139.95
On Sale
Ferrite Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 1/4, 3/8, 1/2, 3/4 - 22 filters
Ferrite Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 1/4, 3/8, 1/2, 3/4 - 22 filters
SKU FSCP-31-22
List price $108.00
Save 12%
$95.00
MINI-BALUN 1:1 Coax Interface to Ladder Line, Dipole elements, 500 Watts PEP, up to -38Db Common Mode Rejection, 1-61 MHz, Flagpole, Dipole, Beam and G5RV/ZS6BKW Antennas
MINI-BALUN 1:1 Coax Interface to Ladder Line, Dipole elements, 500 Watts PEP, up to -38Db Common Mode Rejection, 1-61 MHz, Flagpole, Dipole, Beam and G5RV/ZS6BKW Antennas
SKU MB-1-500SS
$69.95
On Sale
Multi-Ring/Multi-Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 17 filters
Multi-Ring/Multi-Snap On Combo Pack, Mix 31, RFI Range 1-300 MHz - 17 filters
SKU MRSCP-31-17
List price $112.00
Save 15%
$95.00
On Sale
Off Center Fed Dipole Antenna, 160-10 Meters (12 bands), 160, 80M Compensators, 500/1.5KW/5KW PEP rated - FREE shipping in USA
Off Center Fed Dipole Antenna, 160-10 Meters (12 bands), 160, 80M Compensators, 500/1.5KW/5KW PEP rated - FREE shipping in USA
SKU PAL-OCF16006RC-500
List price $459.95
Save 30%
$319.95
RFI Common Mode Noise Filter Kits for Generic Antenna Switches - Isolate Non-Selected Coax Braid Noise!
RFI Common Mode Noise Filter Kits for Generic Antenna Switches - Isolate Non-Selected Coax Braid Noise!
Suppress Unwanted Noise & RFI
SKU RFI-AS-GEN-2
$129.95
Introductory Price
SIGNALPEN™ - PENCIL SIZE RF DETECTOR LIGHT, 60 Hz to 1.2 GHz or 2.4-6 GHz, MW - KW, Direct Contact or Inductive Detector. HF, VHF ,UHF and 1.2GHz. No Battery! Fits in Shirt Pocket!
SIGNALPEN™ - PENCIL SIZE RF DETECTOR LIGHT, 60 Hz to 1.2 GHz or 2.4-6 GHz, MW - KW, Direct Contact or Inductive Detector. HF, VHF ,UHF and 1.2GHz. No Battery! Fits in Shirt Pocket!
SKU SIGNALPEN
$49.95
On Sale
ZS6BKW Center Fed Antenna, 80-6 Meters, 500/1.5KW/5KW PEP rated - FREE shipping in USA
ZS6BKW Center Fed Antenna, 80-6 Meters, 500/1.5KW/5KW PEP rated - FREE shipping in USA
SKU PAL-ZS68006-500
List price $199.95
Save 15%
$169.95