Thank you for the video Linus. I added this to my 12 volt QDX using your box. I dropped the voltage from around 13 volts off a partial discharged 13.8 volt battery to 11.5 volts. I have noticed the QDX runs much cooler. Thank you for all your great videos.
Thanks Linas for posting this option for the QDX. I had ordered my Qdx with 12v, which was still in the build queue, and I emailed Hans after seeing your video and had the build changed to 9v as I will be using it in the parks and also would like the ability to use different power sources and always have around 5 watts. It's great to find such great customer service from a company. Love your videos. 73 Ro Hart AI7PD
Fourth time…. I’m starting to build my QDX kit… going with a 9v build. Thanks Linas. I bought a USB variable buck converter, adjusted to 9v…. Thanks again Linas. I’m looking forward to your field/mobile deployment video with the QDX. 72 de W7UDT Rand
Great news Rand! Wish you lots of fun while building! I'm also in a mid-building of my QDX V3, so field/mobile deployment will follow later with this newer version of this fantastic little rig. Good luck !73! Linas LY2H
Thanks for the video Linus. I bought my QDX preassembled and it was supposed to be for 12v. I bought the little 12v lithium batter power pack on Amazon and hooked it up only to find out it was putting out almost 8W. Several emails back and forth to QRP labs who said my watt meter was wrong and then I needed to run it through a dummy load to be accurate. I had been and my watt meter is accurate. The second to the last correspondence with QRP labs was to put a series of diodes in line to reduce the 12v to 9v. Then the last one was to send them a picture of T1 to see if it was wound for 12 or 9v. I sent the picture and never received an answer. Because of your video, I can now look myself to see about the windings in T1 and determine how it was wound. Either way, thank you for your video and the links for the Buck converter and your housing box. Keep up the good work.
This is the third time I watched this video. I’ve yet to start building my QDX kit… but when I do, I’m building it for 9v. Your rationale makes perfect sense. You my friend give good advice! Thanks again Linas! One thing I would like to know… the settings on your KX2.
Many thanks for an excellent voltage solution for the QDX. I just built the little convertor and noticed that I could change the voltage slightly by squeezing the top and and bottom of the box between my fingers. A little investigation showed that the little pot was getting squeezed and that was causing the voltage change. My board is sitting flat against the bottom of the box. Easy fix: just nip off a little piece of the inside lip on the cover near the pot. It was this lip that was putting presssure on the pot. Works perfect now. 73, Howard AC1MN
Thanks Howard! You are absolutely right, nipping off a bit of inside lip on the box would help to adjust the accommodation of the board. I was designing the 3D printed box around my copy of the pcb and it could be the different pcbs might differ in dimensions like up to 0.5mm or so. I should have added some 1mm or so up to the box hight probably but I wanted it as small as possible :)... Thanks again for your tip! 73! Linas LY2H
As I wait for my QDX to arrive I was pondering if I should configure it as a 9 or 12 volt unit. This You Tube made my decision and I will be building the QDX for 9 volts. You actually solved another issue for me. I have a portable transceiver that I take in the field and I use 9 volts as well, but operating time is not all that great. The setup you described will work perfectly for me in the field. Thanks for the video. 73 Dave - KE6EX
Linas - Great little DC-DC box and video discussion on this decision that must be made. I agree with your analysis when using a battery. I don't have my QDX yet, so preparing while I await the next batch. It seems like there was enough room inside the QDX box in the pictures. As long as the DC-DC is not really noisy in the RF area of interest, that would be a great future consideration. I see it has been discussed here also. I am glad it is in the discussion - keep it going. Great discussion going here. Great video Linas and it helped me make my decision as well. Bill - KA0B
Thanks Bill! It would probably be possible to accommodate the DC-DC board on the QDX pcb but the care should be taken and some skills applied to have it sit there safely and firmly. But these efforts would only justify itself if the permanent 9V is all what you want under the closed lid of the box as the access to the DC board would have been made complicated in this option. I wanted more freedom for experimenting, especially that power supply voltage regulation is the only way to adjust the output power in QDX and this option seemed important to me keeping it easily accessible ( through this tiny hole in the box :)). Also, I left door open for connecting any other battery or whatever power source to my QDX. With this said, I would , as experimenter, be very much interested in seeing someone else's implementation of the on-board DC-DC converter arrangement ! 73! Linas LY2H
Thank you. I was considering wiring it up for 9V and adding a 9V linear shunt regulator. But as I have some of the little switchers, and you say they don't appear to be noisy, I will wire in one of them and give it a try. However, I will switch to a small external voltage control potentiometer with a knob mounted on the front of my radio chassis, and I will use it as an RF power output controller to keep it always at 5 Watts.
Hi Linus, I suggest you make the 9 volt power poles stacked top to bottom instead of side to side. This way you can never plug things in backwards thus releasing the magic smoke. Thanks for all of your good work.
Or choose a different connector that doesn't have this inexcusable conceptual design flaw. 'Power Poles' are not needed here, with a 1A load. People with a sense of humour should show up at Field Day with a 12V DC battery bank or power supply where the 'Power Poles' are reversed in their physical arrangement, but still perfectly correct in terms of Red and Black colour coding. Grab a chair and popcorn, and let the debate begin. Plenty of better connectors around; I wonder why 'someone' decided that Power Poles were to become some sort of "standard", makes no sense.
Power Poles are needed here , for me, as all my 12V bus in the shack and in the van is uniformly adapted for the PP. This makes it extremely convienient swaping different batteries to different radios, power cords, in-line power meters, etc. As experimenter, I need to do this a lot, so standardised connectors make great sense for me. YMMV 73! LInas LY2H
Thanks very much for this, Linas. I got a 6-pack of these devices from Amazon using your link. I wired one up today and it works fine with my QDX, which I had already wired for 9 volts. I'm using it to step down from 13.8 V. It runs cool and generates no RFI that I could hear.
Perhaps one thing that should be considered is that these digital modes work way down into the noise, and we wouldn't be able to hear switching supply transients that could cause problems on receive. I'll do some sensitivity experiments with both linear regulators and the little switcher as I have a suitable signal source and attenuators in my lab ( an HP HF spectrum analyzer and an HF service monitor.) Unfortunately, what I don't have as yet is a QDX. I've had a couple of them on order for a couple of months now, but so far, no QDX has arrived here in the USA. I hope they show up soon as I'm eager to play with them, but I know QRP Labs has been swamped with orders, and also has procurement problems, as everyone does these days, and so I wait. But that's OK. I can spend the time building a magnetic loop antenna for use in my apartment while I wait. That seems like the perfect combination for use with the digital modes of the QDX.
@@johnwest7993 Sounds like a plan! Good luck! I've received my V3 QDX last week from Turkey with no probs, so it's gonna be my next coming project. As to the noise, you are right, if even there is some ( my ears indicate nothing :), but may be you could trace it with your test gear) it makes no feasible impact for the digital modes. Hope to see you soon on the waterfall! 73! Linas LY2H
Correct. And I only need to reduce voltage from the 12-14V levels, as my QDX is built for 9V. Actually, you can choose whatever you want, including no converters at all, as long as you can provide for 9V/1A at the QDX’s power feedpoint. The same logic is valid for the 12V QDX. 73! Linas LY2H
Good video and I agree with the analysis to use a down converter for a 9volt built QDX. The one question that I have is related to your 3d printed enclosure. Since it is plastic and plastic is a poor conductor of heat, have you run into any heat issues? Maybe some vents in the case would help with heat dissipation.
Thanks Evan! No, I noticed no heating at all at least on the chips I was using. The parts of the pcb don't even get warm enough to start being concerned :) So the plastic box is very much OK , in my case. To make sure, you can always try use the unit without the box and see how it feels heatlike under specifically your conditions of use. HTH, 73! Linas LY2H
Hi Diego! That would be nice! Unfortunately, the current design of V3 does not allow for the high bands operation option. The QRP-Labs owner and author of the rig Hans Summers could tell best if and when he is planning to release the high-band version, including a new firmware (which is not open source). Let's wait and see! 73! Linas LY2H
I’m now wondering Linas, if the down converter could be placed inside the QDX case itself? If so, it would seem prudent to do so… what are your thoughts?
Hello Randall! Yes, I think it could. It was my first thought that came to my mind when assembling my QDX :). But then I decided to go the external tiny PS way for some practical reasons. Firstly, it would take a bit of surgical intervention to the original QDX board getting it ready to accommodate an alien pcb body of the downconverter, and doing this is always a risk to damage some tiny smd parts on the board. Secondly, I wanted more versatility with my downconverter, like having it variable voltage output for experimenting with QDX or any other radios/projects I might wish to around the shack. Due to these reasons mainly, I chose this tiny regulated board and equiped it with the PP connectors as all my 12V "grid" in the shack and in my radio-camper van is adopted for the PP now. The construction is still teeny-tiny, not much bigger than the PP connector itself :). Would I ever wanted, still, to integrate the 9V PS into a QDX ( my V3 is on its way from Turkey, I hope!), I would probably go for one of these fixed 9V/3A output downconverters which are really small ones, or for even more simplistic solutions based on 7809 family or alike chips. With the V3 of the QDX being equiped with the reverse voltage protection circuitry and improved low-voltage chain, even the simplistic solutions might be safe enough to run. So, let's wait and see! 73! Linas LY2H
@@Linas_LY2H I have to say the voltage step down unit is tidy, and very well thought out. Couldn’t you tuck the unit inside now? The strain relief of the red and black power lead would be sufficient to make the unit more compact… You’ve given me some things to consider when I finally receive my QDX v3 kit…. Thanks Linas!
I wound my QDX for 12v and I am using dc dc upconverter to get 13,5v out of 12v from a computer PSU. And it works well, running only a bit warm. I also tried a downconverter similar to yours to lower from 4 16850 cells down to 13v and that worked too. What is most important, I saw no additional noise on receive when using converters.
Thanks for your comment Vojislav. Yes, upconverting is also possible, it depends on the situation. I use the Voltage Booster in my 100W Go-Box to get a stable 13.8V from my Bioeno LiFePo4 battery to feed my FT-891. The booster only switches on for transmit. But with QDX is a bit different situation cause with 9V wound transformer I have a bit more freedom output power and supply voltage variety wise. 73! Linas LY2H
@@Linas_LY2H You dont need 12v power because ft8 is not ment to be high power digital it was design to be use lower power during poor condition during the low sun cycle
@@AndrewMurphy8383 If you wire the output transformer for 12V you, actualy, get less power , not more , compare to the 9V version. This is pictured in the power vs voltage chart in the QDX user manual and it's in the video. 73! Linas LY2H.
@@Linas_LY2H Oh ok i miss the point sorry love your videos thanks to u i am going be buying a van or old ambalence to covert to camper hopefull soon and keep the vidoes coming 73s
If your lithium battery gets down to 9 volts you have damaged it! Lithium Iron batteries are about 14 votes and are discharged around 12 volts. Below that can damaged the battery and most battery management systems cut off about 11.5 to 12 volts
Thanks for your comment on the use of Lithium Iron Phosphate batteries Donald, which I’m fully agree with. In my video I’m using a Lithium Ion (not Iron) 3S battery pack with 12.6 V fully charged. I agree with you that no battery type should be over-depleted and in no way I am proposing discharging any Lithium battery pack down to 9V in my video :). In my video, I’m discussing not the battery pack’s DOD problems but the power supply dilemma of the QDX transceiver. I’m advocating the 9V supply for this nice radio and propose using the step down converter for this purpose. The step down converter has no relation with possible misuse of the battery pack by the user. It goes without saying that every user must take care himself of ones battery pack being properly charged and discharged. 73! Linas LY2H
Linas, I’d ordered my QDX v3… and I now recognize the efficiency of your design… Could you make me a 3d down converter box? I’d be happy to pay you for your time & materials… let me know what you decide… thanks Linas! de W7UDT
Thank you for the video Linus. I added this to my 12 volt QDX using your box. I dropped the voltage from around 13 volts off a partial discharged 13.8 volt battery to 11.5 volts. I have noticed the QDX runs much cooler. Thank you for all your great videos.
Thanks Linas for posting this option for the QDX. I had ordered my Qdx with 12v, which was still in the build queue, and I emailed Hans after seeing your video and had the build changed to 9v as I will be using it in the parks and also would like the ability to use different power sources and always have around 5 watts. It's great to find such great customer service from a company. Love your videos. 73 Ro Hart AI7PD
Thanks! Agree, Hans and the QRPLabs is fantastic! 73! Linas LY2H
Fourth time…. I’m starting to build my QDX kit… going with a 9v build. Thanks Linas. I bought a USB variable buck converter, adjusted to 9v…. Thanks again Linas. I’m looking forward to your field/mobile deployment video with the QDX. 72 de W7UDT Rand
Great news Rand! Wish you lots of fun while building! I'm also in a mid-building of my QDX V3, so field/mobile deployment will follow later with this newer version of this fantastic little rig. Good luck !73! Linas LY2H
Thanks for the video Linus. I bought my QDX preassembled and it was supposed to be for 12v. I bought the little 12v lithium batter power pack on Amazon and hooked it up only to find out it was putting out almost 8W. Several emails back and forth to QRP labs who said my watt meter was wrong and then I needed to run it through a dummy load to be accurate. I had been and my watt meter is accurate. The second to the last correspondence with QRP labs was to put a series of diodes in line to reduce the 12v to 9v. Then the last one was to send them a picture of T1 to see if it was wound for 12 or 9v. I sent the picture and never received an answer. Because of your video, I can now look myself to see about the windings in T1 and determine how it was wound. Either way, thank you for your video and the links for the Buck converter and your housing box. Keep up the good work.
Cool, there is always a work-around! Enjoy your wonderfull little radio as I enjoy mine! 73! Linas LY2H
Looked at the QDX and sure enough, it's wound for 9V. I'll be making one of your little Buck converter and case. 73
@@dpsflyboy Nice to hear that Bob, hope, it's gonna work for you! 73! Linas LY2H
This is the third time I watched this video. I’ve yet to start building my QDX kit… but when I do, I’m building it for 9v. Your rationale makes perfect sense.
You my friend give good advice! Thanks again Linas!
One thing I would like to know… the settings on your KX2.
Thanks Randall, I'm flattered :). What exactly settings on KX2 are you interested in?
Many thanks for an excellent voltage solution for the QDX. I just built the little convertor and noticed that I could change the voltage slightly by squeezing the top and and bottom of the box between my fingers. A little investigation showed that the little pot was getting squeezed and that was causing the voltage change. My board is sitting flat against the bottom of the box. Easy fix: just nip off a little piece of the inside lip on the cover near the pot. It was this lip that was putting presssure on the pot. Works perfect now. 73, Howard AC1MN
Thanks Howard! You are absolutely right, nipping off a bit of inside lip on the box would help to adjust the accommodation of the board. I was designing the 3D printed box around my copy of the pcb and it could be the different pcbs might differ in dimensions like up to 0.5mm or so. I should have added some 1mm or so up to the box hight probably but I wanted it as small as possible :)... Thanks again for your tip! 73! Linas LY2H
As I wait for my QDX to arrive I was pondering if I should configure it as a 9 or 12 volt unit. This You Tube made my decision and I will be building the QDX for 9 volts. You actually solved another issue for me. I have a portable transceiver that I take in the field and I use 9 volts as well, but operating time is not all that great. The setup you described will work perfectly for me in the field. Thanks for the video. 73 Dave - KE6EX
Thanks Dave! Hope to see you on the waterfall soon! 73! Linas LY2H
Linas - Great little DC-DC box and video discussion on this decision that must be made. I agree with your analysis when using a battery. I don't have my QDX yet, so preparing while I await the next batch.
It seems like there was enough room inside the QDX box in the pictures. As long as the DC-DC is not really noisy in the RF area of interest, that would be a great future consideration. I see it has been discussed here also. I am glad it is in the discussion - keep it going. Great discussion going here.
Great video Linas and it helped me make my decision as well.
Bill - KA0B
Thanks Bill! It would probably be possible to accommodate the DC-DC board on the QDX pcb but the care should be taken and some skills applied to have it sit there safely and firmly. But these efforts would only justify itself if the permanent 9V is all what you want under the closed lid of the box as the access to the DC board would have been made complicated in this option. I wanted more freedom for experimenting, especially that power supply voltage regulation is the only way to adjust the output power in QDX and this option seemed important to me keeping it easily accessible ( through this tiny hole in the box :)). Also, I left door open for connecting any other battery or whatever power source to my QDX. With this said, I would , as experimenter, be very much interested in seeing someone else's implementation of the on-board DC-DC converter arrangement ! 73! Linas LY2H
Thank you. I was considering wiring it up for 9V and adding a 9V linear shunt regulator. But as I have some of the little switchers, and you say they don't appear to be noisy, I will wire in one of them and give it a try. However, I will switch to a small external voltage control potentiometer with a knob mounted on the front of my radio chassis, and I will use it as an RF power output controller to keep it always at 5 Watts.
Hi Linus, I suggest you make the 9 volt power poles stacked top to bottom instead of side to side. This way you can never plug things in backwards thus releasing the magic smoke. Thanks for all of your good work.
Good idea! Thanks and 73! Linas LY2H
Or use a different sized power pole
Thanks for the suggestion!
Or choose a different connector that doesn't have this inexcusable conceptual design flaw. 'Power Poles' are not needed here, with a 1A load. People with a sense of humour should show up at Field Day with a 12V DC battery bank or power supply where the 'Power Poles' are reversed in their physical arrangement, but still perfectly correct in terms of Red and Black colour coding. Grab a chair and popcorn, and let the debate begin. Plenty of better connectors around; I wonder why 'someone' decided that Power Poles were to become some sort of "standard", makes no sense.
Power Poles are needed here , for me, as all my 12V bus in the shack and in the van is uniformly adapted for the PP. This makes it extremely convienient swaping different batteries to different radios, power cords, in-line power meters, etc. As experimenter, I need to do this a lot, so standardised connectors make great sense for me. YMMV 73! LInas LY2H
I printed the housing and built 2 for 9v, works great and the housing is a good fit
Thanks for the good news! 73! Linas LY2H
Thanks very much for this, Linas. I got a 6-pack of these devices from Amazon using your link. I wired one up today and it works fine with my QDX, which I had already wired for 9 volts. I'm using it to step down from 13.8 V. It runs cool and generates no RFI that I could hear.
I'm very glad this little board works good for you Bruce! I'd love to see you on the waterfall! 73! Linas LY2H
Perhaps one thing that should be considered is that these digital modes work way down into the noise, and we wouldn't be able to hear switching supply transients that could cause problems on receive. I'll do some sensitivity experiments with both linear regulators and the little switcher as I have a suitable signal source and attenuators in my lab ( an HP HF spectrum analyzer and an HF service monitor.) Unfortunately, what I don't have as yet is a QDX. I've had a couple of them on order for a couple of months now, but so far, no QDX has arrived here in the USA. I hope they show up soon as I'm eager to play with them, but I know QRP Labs has been swamped with orders, and also has procurement problems, as everyone does these days, and so I wait. But that's OK. I can spend the time building a magnetic loop antenna for use in my apartment while I wait. That seems like the perfect combination for use with the digital modes of the QDX.
@@johnwest7993 Sounds like a plan! Good luck! I've received my V3 QDX last week from Turkey with no probs, so it's gonna be my next coming project. As to the noise, you are right, if even there is some ( my ears indicate nothing :), but may be you could trace it with your test gear) it makes no feasible impact for the digital modes. Hope to see you soon on the waterfall! 73! Linas LY2H
Buck converters only reduce voltage. Why not choose a more flexible Buck-Boost option?
Correct. And I only need to reduce voltage from the 12-14V levels, as my QDX is built for 9V. Actually, you can choose whatever you want, including no converters at all, as long as you can provide for 9V/1A at the QDX’s power feedpoint. The same logic is valid for the 12V QDX. 73! Linas LY2H
Another brilliant video Linas
Thanks Jake M6LSC 👍
Good video and I agree with the analysis to use a down converter for a 9volt built QDX. The one question that I have is related to your 3d printed enclosure. Since it is plastic and plastic is a poor conductor of heat, have you run into any heat issues? Maybe some vents in the case would help with heat dissipation.
Thanks Evan! No, I noticed no heating at all at least on the chips I was using. The parts of the pcb don't even get warm enough to start being concerned :) So the plastic box is very much OK , in my case. To make sure, you can always try use the unit without the box and see how it feels heatlike under specifically your conditions of use. HTH, 73! Linas LY2H
Hi, is it possible to transmit in 15m and 10m changing something?73´s Diego LU2DVY
Hi Diego! That would be nice! Unfortunately, the current design of V3 does not allow for the high bands operation option. The QRP-Labs owner and author of the rig Hans Summers could tell best if and when he is planning to release the high-band version, including a new firmware (which is not open source). Let's wait and see! 73! Linas LY2H
@@Linas_LY2H thank you 73´s and good dx
I’m now wondering Linas, if the down converter could be placed inside the QDX case itself? If so, it would seem prudent to do so… what are your thoughts?
Hello Randall! Yes, I think it could. It was my first thought that came to my mind when assembling my QDX :). But then I decided to go the external tiny PS way for some practical reasons. Firstly, it would take a bit of surgical intervention to the original QDX board getting it ready to accommodate an alien pcb body of the downconverter, and doing this is always a risk to damage some tiny smd parts on the board. Secondly, I wanted more versatility with my downconverter, like having it variable voltage output for experimenting with QDX or any other radios/projects I might wish to around the shack. Due to these reasons mainly, I chose this tiny regulated board and equiped it with the PP connectors as all my 12V "grid" in the shack and in my radio-camper van is adopted for the PP now. The construction is still teeny-tiny, not much bigger than the PP connector itself :). Would I ever wanted, still, to integrate the 9V PS into a QDX ( my V3 is on its way from Turkey, I hope!), I would probably go for one of these fixed 9V/3A output downconverters which are really small ones, or for even more simplistic solutions based on 7809 family or alike chips. With the V3 of the QDX being equiped with the reverse voltage protection circuitry and improved low-voltage chain, even the simplistic solutions might be safe enough to run. So, let's wait and see! 73! Linas LY2H
@@Linas_LY2H I have to say the voltage step down unit is tidy, and very well thought out. Couldn’t you tuck the unit inside now? The strain relief of the red and black power lead would be sufficient to make the unit more compact…
You’ve given me some things to consider when I finally receive my QDX v3 kit…. Thanks Linas!
I wound my QDX for 12v and I am using dc dc upconverter to get 13,5v out of 12v from a computer PSU. And it works well, running only a bit warm. I also tried a downconverter similar to yours to lower from 4 16850 cells down to 13v and that worked too. What is most important, I saw no additional noise on receive when using converters.
Thanks for your comment Vojislav. Yes, upconverting is also possible, it depends on the situation. I use the Voltage Booster in my 100W Go-Box to get a stable 13.8V from my Bioeno LiFePo4 battery to feed my FT-891. The booster only switches on for transmit. But with QDX is a bit different situation cause with 9V wound transformer I have a bit more freedom output power and supply voltage variety wise. 73! Linas LY2H
@@Linas_LY2H You dont need 12v power because ft8 is not ment to be high power digital it was design to be use lower power during poor condition during the low sun cycle
@@AndrewMurphy8383 If you wire the output transformer for 12V you, actualy, get less power , not more , compare to the 9V version. This is pictured in the power vs voltage chart in the QDX user manual and it's in the video. 73! Linas LY2H.
@@Linas_LY2H Oh ok i miss the point sorry love your videos thanks to u i am going be buying a van or old ambalence to covert to camper hopefull soon and keep the vidoes coming 73s
You have convinced me! I'll be running mine on 9V when i get one. Did you find your Bioeno LiFePo4 battery somewhere in europe? :)
I'm very glad you will! I got my Bioeno 20Ah directly from the company. They do send overseas , at a price of course :) . 73! Linas LY2H
NiIce job with the video 👍
What type is this small laptop on the left?
It's a CHUWI Minibook Win11 tablet/laptop PC.
@@Linas_LY2H Tnx
If your lithium battery gets down to 9 volts you have damaged it! Lithium Iron batteries are about 14 votes and are discharged around 12 volts. Below that can damaged the battery and most battery management systems cut off about 11.5 to 12 volts
Thanks for your comment on the use of Lithium Iron Phosphate batteries Donald, which I’m fully agree with. In my video I’m using a Lithium Ion (not Iron) 3S battery pack with 12.6 V fully charged. I agree with you that no battery type should be over-depleted and in no way I am proposing discharging any Lithium battery pack down to 9V in my video :). In my video, I’m discussing not the battery pack’s DOD problems but the power supply dilemma of the QDX transceiver. I’m advocating the 9V supply for this nice radio and propose using the step down converter for this purpose. The step down converter has no relation with possible misuse of the battery pack by the user. It goes without saying that every user must take care himself of ones battery pack being properly charged and discharged. 73! Linas LY2H
Linas, I’d ordered my QDX v3… and I now recognize the efficiency of your design… Could you make me a 3d down converter box? I’d be happy to pay you for your time & materials… let me know what you decide… thanks Linas! de W7UDT
No problems Randall, I'm glad you liked it! Just send me your postal addr via the email :) 73! Linas LY2H