• Balun One Nine V1   Tiny Low Cost 1:9 Hf Antenna Balun And Unun With Antenna Input Protection For Ha
  • Balun One Nine V1   Tiny Low Cost 1:9 Hf Antenna Balun And Unun With Antenna Input Protection For Ha
  • Balun One Nine V1   Tiny Low Cost 1:9 Hf Antenna Balun And Unun With Antenna Input Protection For Ha
  • Balun One Nine V1   Tiny Low Cost 1:9 Hf Antenna Balun And Unun With Antenna Input Protection For Ha
  • Balun One Nine V1   Tiny Low Cost 1:9 Hf Antenna Balun And Unun With Antenna Input Protection For Ha
  • Balun One Nine V1   Tiny Low Cost 1:9 Hf Antenna Balun And Unun With Antenna Input Protection For Ha
  • Balun One Nine V1   Tiny Low Cost 1:9 Hf Antenna Balun And Unun With Antenna Input Protection For Ha
Balun One Nine V1   Tiny Low Cost 1:9 Hf Antenna Balun And Unun With Antenna Input Protection For Ha
Balun One Nine V1   Tiny Low Cost 1:9 Hf Antenna Balun And Unun With Antenna Input Protection For Ha
Balun One Nine V1   Tiny Low Cost 1:9 Hf Antenna Balun And Unun With Antenna Input Protection For Ha
Balun One Nine V1   Tiny Low Cost 1:9 Hf Antenna Balun And Unun With Antenna Input Protection For Ha
Balun One Nine V1   Tiny Low Cost 1:9 Hf Antenna Balun And Unun With Antenna Input Protection For Ha
Balun One Nine V1   Tiny Low Cost 1:9 Hf Antenna Balun And Unun With Antenna Input Protection For Ha
Balun One Nine V1   Tiny Low Cost 1:9 Hf Antenna Balun And Unun With Antenna Input Protection For Ha

Balun One Nine V1 Tiny Low Cost 1:9 Hf Antenna Balun And Unun With Antenna Input Protection For Ha

SKU:HAR09WHT6
Sale price
£41.00
Regular price
£68.00
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per 
( 39% off )
Quantity:
Expected Delivery: 21-28 days

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Tracked Shipping

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10 Days Return

  • 1:9 HF antenna balun for long wire antennas; includes excellent ESD protection on input.
  • Great match for attaching a long wire to the Ham It Up.
  • Fully assembled, and easy to use.
  • Excellent specifications & low insertion loss.
  • Only 39.2mm x 13.0mm and 5g!

Customer Reviews

This thing works This thing works. But I live in a suburban area, and I only have room for a 35 foot "long" wire in my back yard. I have it attached to my roof peak at the high end 20 ft, and to my wall at the low end, about 4.5 feet above the ground so it's a sloper, with insulators.I'm using it with standard RG-6 "cable tv" type coax with an adapter, a layer of aluminum foil and a layer of braided wire for a shield. Grounded shield. Copper center conductor. NNE orientation, in southern Arizona.I'm thinking of shortening the long wire, though, to get it further away from the attachment points. I don't know if that's the problem, but I'm amplifying noise right along with the signal when I use the long wire. It could be that I'm in such a noisy environment, it won't help. It will take experimentation. If I level the longwire by attaching a pole to the wall maybe that will be helpful too. But I know this balun works, because it's definitely amplifying the signal quite bit. Previously I was using a 2-conductor speaker wire lead into the house with no balun. But this balun-coax combo is nearly as noisy. I was hoping the coax would cut down on the noise more than it does. But again it's probably the fault of a noisy electronic environment, not a balun problem. 4Works Great To Connect a Wire Dipole to Your SDR This balun + 14 feet of zip wire makes a great dipole antenna that picks up HF freqs all the way down to 3.5MHz and AM radio medium wave. I pulled the zip wire apart to make two four feet sections for a total length of 8 feet for the dipole and the rest of the zip wire was used as the feedline. 5Works really great when you use it the way its meant to be used I found this worked best when I removed the ground jumper trace on the bottom and ran one single long wire about 60 feet around the eves of the house and the other to a grounding rod in the ground. I've picked up AM stations at night that are 800+ miles away plus tons of amateur and shortwave signals. 5Since some other reviewers said this was actually an Unun ... Since some other reviewers said this was actually an Unun I took a very close look at it. It is a Balun as it is described and as documented in the schematic on the companies website. Since I was using this on a long wire antenna I did the following: I cut the trace on the bottom of the circuit board which connects the center tap of the antenna side of the transformer to the ground on the sma connector. I then inserted and soldered a wire through the hole next to where Max +28 dBm is printed. This wire was connected to the ground wire which was also connected to one of the antenna inputs and the long wire was connected to the other. 5Works really great as intended Works really great as intended. I'm not crazy about the spring pressure wire inserts. They don't always feel secure, or they will last for many insert/removal cycles. I think that using the right wire gauge might make a difference in this regard. Overall, a good product. 4Well Designed and Works Perfectly Well made and perfect for making a custom antenna. I replaced the off-the-shelf antenna for my ADS-B receiver with a custom antenna I made from copper rods and this matching transformer. The result was more than I could have hoped for. My system went from receiving 1,500 position messages per day to over 80,000! A 50X improvement. It increased reception range from less than 80km to over 400km. 5People seem confused on what this is. It's a ... People seem confused on what this is. It's a Balun (balanced antenna to unbalanced coax). If you are hooking one side to ground, you are hooking up an unbalanced antenna and should not be using this. You should be using a dipole (two wires of equal length) with this. Works well at 1:9 with a balanced dipole and balanced 450-ohm ladder line to coax. 5One side to wire, one side to ground. Which one? Interesting piece of hardware for using a random-length wire with an SDR-RTL but there's more to this.First, this is not, technically, a BALUN (BALanced-UNbalanced line transformer), but a UNUN (UNbalanced-UNbalanced line transformer)The picture I've added shows a standard circuit diagram for a 9:1 UNUN. You'll notice a couple things about this. First, how SMALL the NooElec unit is. Second, one side - the UNbalanced side - has twice as much impedence as the side to ground. This makes a difference. Your VSWR is lower when wired right (I tested it with a SARK 110 vector analyzer, a "random" 36 foot piece of 22 gauge jumper wire - see the other two pictures attached, the one marked CSV_001 is wired correctly, CSV_000 is wrong). While the differences are small in my example, other wire lengths at other frequencies can make a HUGE difference. The side with the paperclip goes to ground.You can test this out yourself if you look at the circuit diagram. One connector shorts directly to ground. The other side has some impedence. I measured - roughly - 5 Ohms with a Fluke 118B digital multimeter).From Balun designs dot com:How long a wire to use? While you CAN use a "random wire", 100 years or so of Hams experimenting and calculating have figured this out for you - it's settled science although things like height of the wire above ground and its proximity to telephone wires or home wiring will alter VSWR too so your lengths may need to be a little different. The effects on receive may be marginal on some frequencies depending on your wire length but can make a huge difference on others; transmitting with very high VSWR can be impossible or damage the transmitter, but, since we're not using this particular UNUN for a transmitter, this is FYI only.Balun Design dot com has a link to a wire length chart you may find useful (fourth picture):http://www.balundesigns.com/content/Wire%20Lengths%20for%204%20and%209-1%20ununs.pdf "unun should be used with the wire lengths listed in the table shown in the above link. Use of the 9132 for "random" wire lengths, other than shown, can potentially create an impedance that is too high for an ATU to match. If a wire length not shown in the table is installed, an antenna analyzer should used to determine the actual feedpoint impedance that will require matching for each band of operation.""Ununs are intended for use with unbalanced antennas such as verticals and long wires. They will not work with balanced designs such as dipoles or loops and use with a balanced antenna may cause erratic operation and/or damage to the unit."One side to wire, one side to ground.Hope this helps. 4Great companion for my FT -817 This little balun is much better than my Miracle Whip on the low bands for casual SWL and with 40 feet of wire ,just 3 feet up, I am receiving well. Just holding the 817 or a short ground wire is sufficient. Very low noise. Would recommend for an SDR.I like the fact I don't have to tune it. The packaging was excellent, and the little clips hold firm enough. You could alwaysadd a little support with some tape. I thank the supplier and all the helpful reviews which made it a snap to set-up.K3GK 5Textbook Match between Antenna and Receiver I am using this (receive only) balun with a long wire connected to my WiNRADIO SDR receiver. HF signals that were just above the noise without the long wire connected to the balun are, with the balun connected, coming in as high as S9+20. It matches the antenna impedance to the receiver impedance just like the textbooks say it will. 5
See All Reviews
Shipment tracking ID will be provided after your product(s) is dispatched. The delivery date stated is indicative and subject to availability, payment authorization, verification, and processing. In case your product(s) is not delivered due to an incorrect or invalid address, we will not be able to process any claims. However, we will notify you if it is returned to us.
  • Return or exchange requests can be made within 10 days of the delivery date.
  • To return or exchange any items, please email us at info@directnine.uk, clearly mentioning your order number and our customer support team will guide you on the process.
  • To be eligible for return, products must be in the exact condition you received them in. All packaging material must be undamaged and unused with the price tags intact.
  • Orders can be cancelled before dispatch. If the order has already been dispatched, cancellation fees might be charged.
  • Due to the nature of the products that we sell, we will not be able to replace or refund unwanted items if they have been opened or any seals are broken.
  • The refund will not include the import duties or the cost of delivery or return postage.
  • If your refund is approved, then it will automatically be credited to the original method of payment, within 7-10 days.
  • DirectNine reserves the right to alter and enforce this Return and Refund Policy at any time without having to serve a prior notice to users.
Description
  • 1:9 HF antenna balun for long wire antennas; includes excellent ESD protection on input.
  • Great match for attaching a long wire to the Ham It Up.
  • Fully assembled, and easy to use.
  • Excellent specifications & low insertion loss.
  • Only 39.2mm x 13.0mm and 5g!
Reviews

Customer Reviews

This thing works This thing works. But I live in a suburban area, and I only have room for a 35 foot "long" wire in my back yard. I have it attached to my roof peak at the high end 20 ft, and to my wall at the low end, about 4.5 feet above the ground so it's a sloper, with insulators.I'm using it with standard RG-6 "cable tv" type coax with an adapter, a layer of aluminum foil and a layer of braided wire for a shield. Grounded shield. Copper center conductor. NNE orientation, in southern Arizona.I'm thinking of shortening the long wire, though, to get it further away from the attachment points. I don't know if that's the problem, but I'm amplifying noise right along with the signal when I use the long wire. It could be that I'm in such a noisy environment, it won't help. It will take experimentation. If I level the longwire by attaching a pole to the wall maybe that will be helpful too. But I know this balun works, because it's definitely amplifying the signal quite bit. Previously I was using a 2-conductor speaker wire lead into the house with no balun. But this balun-coax combo is nearly as noisy. I was hoping the coax would cut down on the noise more than it does. But again it's probably the fault of a noisy electronic environment, not a balun problem. 4Works Great To Connect a Wire Dipole to Your SDR This balun + 14 feet of zip wire makes a great dipole antenna that picks up HF freqs all the way down to 3.5MHz and AM radio medium wave. I pulled the zip wire apart to make two four feet sections for a total length of 8 feet for the dipole and the rest of the zip wire was used as the feedline. 5Works really great when you use it the way its meant to be used I found this worked best when I removed the ground jumper trace on the bottom and ran one single long wire about 60 feet around the eves of the house and the other to a grounding rod in the ground. I've picked up AM stations at night that are 800+ miles away plus tons of amateur and shortwave signals. 5Since some other reviewers said this was actually an Unun ... Since some other reviewers said this was actually an Unun I took a very close look at it. It is a Balun as it is described and as documented in the schematic on the companies website. Since I was using this on a long wire antenna I did the following: I cut the trace on the bottom of the circuit board which connects the center tap of the antenna side of the transformer to the ground on the sma connector. I then inserted and soldered a wire through the hole next to where Max +28 dBm is printed. This wire was connected to the ground wire which was also connected to one of the antenna inputs and the long wire was connected to the other. 5Works really great as intended Works really great as intended. I'm not crazy about the spring pressure wire inserts. They don't always feel secure, or they will last for many insert/removal cycles. I think that using the right wire gauge might make a difference in this regard. Overall, a good product. 4Well Designed and Works Perfectly Well made and perfect for making a custom antenna. I replaced the off-the-shelf antenna for my ADS-B receiver with a custom antenna I made from copper rods and this matching transformer. The result was more than I could have hoped for. My system went from receiving 1,500 position messages per day to over 80,000! A 50X improvement. It increased reception range from less than 80km to over 400km. 5People seem confused on what this is. It's a ... People seem confused on what this is. It's a Balun (balanced antenna to unbalanced coax). If you are hooking one side to ground, you are hooking up an unbalanced antenna and should not be using this. You should be using a dipole (two wires of equal length) with this. Works well at 1:9 with a balanced dipole and balanced 450-ohm ladder line to coax. 5One side to wire, one side to ground. Which one? Interesting piece of hardware for using a random-length wire with an SDR-RTL but there's more to this.First, this is not, technically, a BALUN (BALanced-UNbalanced line transformer), but a UNUN (UNbalanced-UNbalanced line transformer)The picture I've added shows a standard circuit diagram for a 9:1 UNUN. You'll notice a couple things about this. First, how SMALL the NooElec unit is. Second, one side - the UNbalanced side - has twice as much impedence as the side to ground. This makes a difference. Your VSWR is lower when wired right (I tested it with a SARK 110 vector analyzer, a "random" 36 foot piece of 22 gauge jumper wire - see the other two pictures attached, the one marked CSV_001 is wired correctly, CSV_000 is wrong). While the differences are small in my example, other wire lengths at other frequencies can make a HUGE difference. The side with the paperclip goes to ground.You can test this out yourself if you look at the circuit diagram. One connector shorts directly to ground. The other side has some impedence. I measured - roughly - 5 Ohms with a Fluke 118B digital multimeter).From Balun designs dot com:How long a wire to use? While you CAN use a "random wire", 100 years or so of Hams experimenting and calculating have figured this out for you - it's settled science although things like height of the wire above ground and its proximity to telephone wires or home wiring will alter VSWR too so your lengths may need to be a little different. The effects on receive may be marginal on some frequencies depending on your wire length but can make a huge difference on others; transmitting with very high VSWR can be impossible or damage the transmitter, but, since we're not using this particular UNUN for a transmitter, this is FYI only.Balun Design dot com has a link to a wire length chart you may find useful (fourth picture):http://www.balundesigns.com/content/Wire%20Lengths%20for%204%20and%209-1%20ununs.pdf "unun should be used with the wire lengths listed in the table shown in the above link. Use of the 9132 for "random" wire lengths, other than shown, can potentially create an impedance that is too high for an ATU to match. If a wire length not shown in the table is installed, an antenna analyzer should used to determine the actual feedpoint impedance that will require matching for each band of operation.""Ununs are intended for use with unbalanced antennas such as verticals and long wires. They will not work with balanced designs such as dipoles or loops and use with a balanced antenna may cause erratic operation and/or damage to the unit."One side to wire, one side to ground.Hope this helps. 4Great companion for my FT -817 This little balun is much better than my Miracle Whip on the low bands for casual SWL and with 40 feet of wire ,just 3 feet up, I am receiving well. Just holding the 817 or a short ground wire is sufficient. Very low noise. Would recommend for an SDR.I like the fact I don't have to tune it. The packaging was excellent, and the little clips hold firm enough. You could alwaysadd a little support with some tape. I thank the supplier and all the helpful reviews which made it a snap to set-up.K3GK 5Textbook Match between Antenna and Receiver I am using this (receive only) balun with a long wire connected to my WiNRADIO SDR receiver. HF signals that were just above the noise without the long wire connected to the balun are, with the balun connected, coming in as high as S9+20. It matches the antenna impedance to the receiver impedance just like the textbooks say it will. 5
See All Reviews
Return And Refund Policy
  • Return or exchange requests can be made within 10 days of the delivery date.
  • To return or exchange any items, please email us at info@directnine.uk, clearly mentioning your order number and our customer support team will guide you on the process.
  • To be eligible for return, products must be in the exact condition you received them in. All packaging material must be undamaged and unused with the price tags intact.
  • Orders can be cancelled before dispatch. If the order has already been dispatched, cancellation fees might be charged.
  • Due to the nature of the products that we sell, we will not be able to replace or refund unwanted items if they have been opened or any seals are broken.
  • The refund will not include the import duties or the cost of delivery or return postage.
  • If your refund is approved, then it will automatically be credited to the original method of payment, within 7-10 days.
  • DirectNine reserves the right to alter and enforce this Return and Refund Policy at any time without having to serve a prior notice to users.
Delivery Policy
Shipment tracking ID will be provided after your product(s) is dispatched. The delivery date stated is indicative and subject to availability, payment authorization, verification, and processing. In case your product(s) is not delivered due to an incorrect or invalid address, we will not be able to process any claims. However, we will notify you if it is returned to us.

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