John Cooper

Пікірлер

@synonyx 2 күн бұрын

Me and that guy would be besties. Ham Radio, Fender Amps/Guitars and reloading?

@johncooper6894 Күн бұрын

Good eye! I do enjoy all three of those hobbies. 73 and thanks for watching.

@judodadeo1933 5 күн бұрын

ALOHA, u and 1 other youtuber are the newest info on SBITX, the next would be 2 months. How was the shipping to your state? Did you pay extra in shipping because I live in Hawaii. Great vid. Informative.

@johncooper6894 Күн бұрын

I picked mine up directly at Dayton Hamvention at the manufacturers booth. Gigaparts sells them and would be able to provide shipping details. Thanks for watching

@furion.. 8 күн бұрын

Good job in locating the problem, apparently they're shipping the bases for the CLR2 and RatShack.64 - but without the matching coil up inside, which is just weird. But you got it right, drill a hole put a bolt through & turn it into a 3/4 wave with a matching Network that makes up the difference, because most people don't realize that only at 1/4 wavelength and 3/4 wavelength and one and a quarter and one and three quarters, etc, can you find a 50 ohm impedance, so you're basically completing the three quarter wave with like you said adding the inductance to a capacitive antenna to make it look like 3/4 wavelength at the radio. I've been playing around with these for I don't know how many decades now, clear back to the 70s, and I've got - I don't know - five or six of the old Penetrators kicking around - or most of the parts anyway, and I built a few of my own 5/8 and have found that for local chit chat you can't beat a 22 ft antenna radiator, and then match it - I use a ring like the old sigma II 5/8 by Avanti, and the entire ring is fed with the RF, then a small coil to ground to dump the DC static. Piece of crap for DX though, MACO V58/5000 will beat it every time because of the higher takeoff angle. Penetrators are awesome if you get them up 50 - 60 ft you'll get some of the best long-distance local (or what some mistakenly call "ground wave" ) performance, but if you want an arse-kickin' higher angle DX antenna it's hard to beat the 19' 8" MACO V58/5000.

@furion.. 8 күн бұрын

Well *_that_* explains it! I'd heard of ppl finding it impossible to tune their new SPT-500 and I just figured ppl or paperwork were wrong about the length, but they're using the base from the CLR-2 / R. S. .64!

@furion.. 8 күн бұрын

I once built to penetrator from scratch, using 102-in stainless steel whip on top of a 20 ft 2x4 and copper wire from there down to a makeshift air pin matching Network and three hundred four inch radials made from I can't remember what. this is over at a guy's house who didn't understand why he wasn't being heard very well by the locals on their verticals when he had a horizontal dipole pulled up 20 ft over the roof, got lucky with this build on the first try we saw 1.25 to 1 and called it good and people that used to hear him with a six to seven now had him at 20 over. That was kind of fun!

@johncooper6894 8 күн бұрын

Yes, quite frustrating. The home-brew antenna you made sounds like it worked very well. 👍 nice job, Thanks for watching

@unclemikeyplays 10 күн бұрын

Thanks for the video. I really love the IDEA of this radio, but I've been holding off in part because I currently have a lot of stuff and not enough time 😀

@kennethherring2918 13 күн бұрын

I realize that this two part video is a bit old, but I just came a cross it recently and I have to say I found it interesting. About a month ago I bought the G90 looking for another portable soulution to complement my FT-891 both of which I can transport via Apache cases with everything I need in each case. Normally, I use a Wolf River Coil which is fairly easy to set up but in your video, you use a 51ft wire with a 9:1 Unun both of which I have. In shot, I look forward to giving this idea in a nearby park Thanks for the great video. By the way, what method do you use to get the wire into the tree? Throw bag? Or something simpler?

@johncooper6894 13 күн бұрын

Thanks for watching. I do sometimes use an arborists throw bag

@AlanTheBeast100 15 күн бұрын

Only nit is opening the tail gate - as another poster notes, you could add an extension for such,

@itrstt66 25 күн бұрын

what is the auonomy with that battery? and how can you know it is fuly charged?

@johncooper6894 25 күн бұрын

My apologies, I am not sure what you mean by auonomy? The battery came with a lifepo charger that has an led that turns green when the battery is fully charged. It is a 3 cell 18650 unit that reaches 3 x 4.2v for a total of 12.6 at full charge.

@itrstt66 25 күн бұрын

@@johncooper6894 i meant autonomy, as per a full charge how long does it last?

@johncooper6894 25 күн бұрын

@@itrstt66 the total capacity is 5ah so 10 hours or more just receiving. Less depending on how much transmitting you are doing and at what power level.

@jamespuckett6457 Ай бұрын

Will the app run JS8 and Winlink as well?

@johncooper6894 28 күн бұрын

No, Not this app. There are some solutions for running JS8 and Winlink on a mac. Nothing turnkey that I am aware of

@470smith Ай бұрын

I built the exact setup you have, tx is great but seems it can't hear very well. Any recommendations?

@johncooper6894 Ай бұрын

I find the radio sounds best with rf gain turned down. Try it with the agc off also, it can sound very good.

@snippits75 Ай бұрын

Ordered one from DX Engineering back in the Fall of 2023. Used an analyzer to tune it, and the best I could get was 5.9 SWR. Also, the radial elements were very loose too just like yours. I sent it back to DXE, and they refunded my money. Thanks for posting the video. How did you fix the radials? I don't have a metal cutting bandsaw.

@johncooper6894 Ай бұрын

If I recall I used a sawzall blade to widen the slots. We also replaced all of the hose clamps with higher quality clamps. Since this one, three other local hams have purchased them and all three needed the changes. These are great antenna's with a little effort. 73 John

@snippits75 Ай бұрын

@@johncooper6894 OK thank you.

@k5utc Ай бұрын

So glad I stumbled on this video!!!! 3 damn days messing with this antenna. I used to have the original 70s model and never had any issue tuning it... Now thanks to this tip I have flat 1:1 on 28.5 I also wrote and sent a msg to DxEngineering where I purchased my antenna describing the issue and what was needed to correct the issue and linked your video as source.

@johncooper6894 Ай бұрын

I am happy to hear the video was helpful. It is a great antenna once you get it configured correctly. 73 and good dx

@OctavMandru Ай бұрын

Hey there! I noticed you have the same issues with choppy modulation via wlan I get with WFview on PC. Lost packets? I tried adjusting the baud speed but it doesn't seem to make a significant difference

@johncooper6894 Ай бұрын

Greetings, connecting via wifi does have its own set of issues. There is a registry

@johncooper6894 Ай бұрын

Change you can make in windows to eliminate the built in wifi throttling that is on by default to save battery. I haven’t tried it yet myself. Might be worth a try.

@OctavMandru Ай бұрын

@@johncooper6894 Hey, that worked! Kinda' :) The output power is a bit jittery at the top and the ALC is having a workout but I managed to snatch Brazil at the first try with 10W. That's 13k km from my location. I wasn't aware of that setting... Thanks a lot, de YO4OCM

@johncooper6894 Ай бұрын

@@OctavMandru You are very welcome. 73 de kc8zki

@frankelly6742 2 ай бұрын

How many watts do you run typically when in the field with that battery? 73 de KC1NDQ

@johncooper6894 2 ай бұрын

I run 20 on SSB with the G90. My sessions are typically just my lunch hour and I have not exhausted it ever. This would be a hunting and pecking session. I am sure it would run down quicker if I was running a POTA frequency.

@Silvertarian 2 ай бұрын

There's several things I could think of spending $20k on and this is one of them.

@MakeDoAndMend1 2 ай бұрын

Yep great stuff. I love magnetic Loop Antennas etc.

@forgetyourlife 2 ай бұрын

What about a choke? Gotta be some RF coming back on an unbalanced antenna.

@blakedesjardins8119 4 ай бұрын

Dude I totally went and bought this exact same setup. For some reason it gives me TX ERROR when trying to tune and I try to transmit. I'm as green as it gets at ham radio. What am I doing wrong?

@johncooper6894 4 ай бұрын

It sounds like you might be trying to tune up out of band. Maybe you have split turned on and the B vfo is not within the ham bands? I would start by making sure split is off and you are in band. I hope you enjoy the setup. 73 John

@user-bb9gk2vg4h 4 ай бұрын

шипит, как керогаз)) yaesu 710 рулит!

@johncooper6894 4 ай бұрын

😆That is funny! The 710 is a nice radio. 73'

@user-bb9gk2vg4h 4 ай бұрын

😁73!@@johncooper6894

@godfreydebouillon8807 4 ай бұрын

Hi, im brand new, just got my General. Whats the thing called that connect to the battery terminals so you can plug the G90 power cord to it? Thanks!

@johncooper6894 4 ай бұрын

Welcome to the hobby and congratulations on the new general ticket. It is called a pigtail. The one I use for this battery has female spade connectors on one end and anderson power poles on the other end.

@AI4QT 5 ай бұрын

Just sent a Winlink VARA-HF email from your node and discovered your page. Love that loop! 73 de AI4QT

@johncooper6894 4 ай бұрын

Nice to hear. Thank you. Magloops are pretty impressive given their footprint. 73 KC8ZKI

@braddephataz 5 ай бұрын

This was perfect. Thank you!

@johncooper6894 5 ай бұрын

You are welcome. I am glad you liked it. Thank you for watching and commenting. 73 John

@F4LDT-Alain 5 ай бұрын

Very interesting video as I'm currently investigating the various kinds of antennas I can use for POTA operation. Thanks for this. If only these 9:1 ununs weren't so hard to find here in France... I see that you do without a counterpoise, so basically the coax acts as the counterpoise, is that right? Some people advise adding a counterpoise and grounding it at the end, what do you think?

@johncooper6894 5 ай бұрын

Thanks for watching and commenting Alain. Sorry to hear the 9:1 are not readily available in France. I have found that allowing the coax to serve as the counterpoise works well enough for voice or cw. Digital modes such as FT8 will however benefit from an additional counterpoise and a common mode choke on the coax. Grounding is a good supplement or alternative to the choke and also helps to keep the rf current from riding up the coax shield and interfering with USB sound card ports.

@F4LDT-Alain 5 ай бұрын

Thanks for your quick reply John. Do you use a single counterpoise or more? what length? I was wondering whether it's better making it resonant or not. I didn't know that it's an alternative to a choke on the coax either. Well, these chokes are equally difficult to source here. I'd make one myself but even toroids are a hard find. Of course I can order from abroad, but with eye-watering shipping costs and/or import taxes. You've got a new subscriber BTW, Your working outdoors with the G90 is quite precisely what I'm aiming for, so your channel is of utmost interest to me.

@johncooper6894 5 ай бұрын

@@F4LDT-Alain thank you for subscribing. I have used a 13ft counterpoise successfully myself. Balun designs has a nice chart that shows various combinations that work out mathematically. Check it out www.balundesigns.com/content/Wire%20Lengths%20for%204%20and%209-1%20ununs.pdf

@johncooper6894 5 ай бұрын

This is another good source for lengths. dxsupply.com/produktfiler/Wire%20Lengths%20for%204%20and%209-1%20ununs.pdf

@johncooper6894 5 ай бұрын

This is good advice from the second source I referenced. Ideal: Sloper configuration with one counterpoise but several different length counterpoises is better. Length of counterpoise should be a minimum of 20-30 feet but longer is better. If possible run the counterpoise above ground away from or perpendicular to the antenna wire and do not ground the counterpoise at the unun. You can also use the unun with no counterpoise or ground if your feedline is at least 25+ feet long. In this configuration the coax shield will act as your counterpoise and there should be no ground at the antenna. With this installation there is a high probability of common mode currents on the shield so a good 1:1 choke balun should be installed in the feedline at or near the point it enters your operating position. Using this configuration with an indoor antenna system is not advised. Good: Attach counterpoise stud to a radial field of at least 8 wires minimum, each 10 -20 feet long. Again, more is better and will increase efficiency. Longer length radials are not necessary. Workable: Attach counterpoise stud on unun to a good ground rod at the feed point of the antenna.

@martyglapa359 5 ай бұрын

Which flagpole hitch manufacturer is this?

@johncooper6894 5 ай бұрын

The brand on Amazon is HiTow. Here is the full description: HITOWMFG Hitch Mount Flagpole Holder for 2" Hitch Receivers Flag Travel, 8.5" or 11.5" Length Black Powder

@dgrogers1 5 ай бұрын

Just bought a new one from DX Engineering (January 2024) and same issue, center conductor was connected to screw on base of vertical element. I moved it to side terminal per your recommendation. I’ve not finished setup as snow and wind finally arrived in Michigan.

@johncooper6894 5 ай бұрын

I am glad the video was able to help. It is a shame they are still shipping units that are wired incorrectly. Stay warm, wicked weather here too. 73 KC8ZKI

@snippits75 Ай бұрын

Were your radials loose too?

@vu3mes 5 ай бұрын

These are the last machines on big size radios.🎉

@johncooper6894 5 ай бұрын

I believe you are correct. Thank you for watching. 73’ John

@user-vp2pv9cf4t 6 ай бұрын

Many congrats from user Icom-7300! de UA3NDX, Anton

@deanmason560 6 ай бұрын

Not a good comparison. Ldg's are smaaller single core vs. Larger dual ore. What mix's are they. You gdt aa dislike from me.

@johncooper6894 6 ай бұрын

Merry Christmas and happy new year to you too

@bandarr3000 6 ай бұрын

I'd like to see the base.

@johncooper6894 6 ай бұрын

The base is a rubber floor mat. It acts as a cushion against the concrete. It works when parked in grass also to keep the end from sinking. Thanks for watching. 73 John

@bandarr3000 6 ай бұрын

Thanks! @@johncooper6894

@danielmartinezhoyos 6 ай бұрын

Hello Jhon, no need to connect a counterpoise/radial to your 9:1 Unun? When would it be appropriate to do so? Thanks.

@johncooper6894 6 ай бұрын

Hello, it is always a good idea to connect a counterpoise. In the case of the video the 16ft coax outer shield was acting as a counterpoise. An additional counterpoise would be beneficial especially for digital modes where usb port disconnects can occur due to common mode current. The addition of a ferrite choke is also helpful.

@danielmartinezhoyos 6 ай бұрын

Thank you Jhon.

@JDK45ACP 7 ай бұрын

I recently got mine and I love it. That antenna tuner is very robust. Great little man pack.

@johncooper6894 7 ай бұрын

Congrats! It is a great little rig. I am sure you will get much enjoyment using it. 73’ John

@1OFGODSOWN 7 ай бұрын

The ICOM 7851 is what Dreams are made of.The BEAST is so Beautiful.👍👏❤️🎤🎙

@johncooper6894 7 ай бұрын

It is a beautiful rig. Steve gets alot if enjoyment out of it. Thanks for watching.

@1OFGODSOWN 7 ай бұрын

@@johncooper6894 I lost my ICOM 7700 a couple of months ago to a Lightning Strike and I miss it badly.The New ICOM 7610 is not in the same class but at least replacement parts are available if needed and not so for the 7700.

@johncooper6894 7 ай бұрын

@@1OFGODSOWN That is a total bummer. I agree regarding the 7610, nice rig, I have one, but not in the 7700 league.

@nicoladamore1222 7 ай бұрын

Qual è il diametro del loop? Per realizzarlo hai utilizzato un cavo rigido?

@blackknight1397 7 ай бұрын

I was inspired to try it out myself!

@johncooper6894 7 ай бұрын

I hope it works well for you! Thanks for letting me know. 73 KC8ZKI

@wesley20991 7 ай бұрын

The settings you have would this work for transmitting as well, sending your position or a message to someone?

@johncooper6894 7 ай бұрын

Yes, you can send your position and messages using pinpoint. Thanks for watching.

@letmelooktv 8 ай бұрын

Just ordered the bag off ali as I am in the UK.

@johncooper6894 8 ай бұрын

I hope you enjoy it. Thanks for watching and commenting. 73 John

@InvertedAV8R 8 ай бұрын

anyone know what mix the toroid is on the maxi-core?

@johncooper6894 8 ай бұрын

DX lists it as a custom mix.

@Screamingtut 8 ай бұрын

John put some Chokes on the power cord of the washer.

@johncooper6894 8 ай бұрын

Good idea. I wonder how many? Thanks for the suggestion. 73 John

@Screamingtut 8 ай бұрын

John, too bad they can't use 21700 LIFEPO4 batteries all you can get out of them is 12.6 VDC output, from them, I was making a 4-cell 21700 battery with a Buck converter to keep the voltage dow to 14VDC

@bill-2018 9 ай бұрын

What a good idea! G4GHB.

@johncooper6894 9 ай бұрын

I agree. Thanks for watching and commenting. 73’ KC8ZKI

@siddharth4662 9 ай бұрын

Where is the secondary loop??😮

@johncooper6894 9 ай бұрын

The MFJ-933C does not use a second loop as an inductive feed. It is capacitively fed via a second variable capacitor in series with the feedline.

@matforsbon 9 ай бұрын

Damn we just missed the unboxing of the radio. The opening of the box went just fine.

@johncooper6894 9 ай бұрын

There is a part two where we fire up the radio. kzfaq.info/get/bejne/hL9gnrGW1paxhac.html

@HippocratesGarden 9 ай бұрын

Kinda sounds like, you deserve to keep the antenna, and get a refund, if not a fee due to you for quality improvement services.

@johncooper6894 9 ай бұрын

I certainly wouldn’t say no! I am glad we were able to figure it out and maybe help future buyers avoid some frustration. I think the antenna will work great now. Thanks for watching. 73 John

@utubrmoore 9 ай бұрын

Great job John!!!

@Kzummo 9 ай бұрын

Great video! What do you use to charge your battery?

@johncooper6894 9 ай бұрын

Thank you. I use a solar charge controller. The battery has a bms in it and will charge from a regulated adjustable power source. You just have to watch the charging current

@Kzummo 9 ай бұрын

@@johncooper6894 Thanks for the speedy reply, 73's

@dandypoint 9 ай бұрын

Looks pretty good. I am thinking about one with an extension so I can open the tailgate!

@johncooper6894 9 ай бұрын

An extension is a great idea. It is a pain hopping over the tailgate to get to anything in the bed once the mast is in place.

@51nw 10 ай бұрын

14k for a ham radio transceiver, hahaha your outa your mind. You have waaay to much money

@KY4CQ_HamRadio 9 ай бұрын

I could imagine way worse things to spend $14K on

@1OFGODSOWN 9 ай бұрын

If I had it or if I were Single I’d own one for sure.It’s only money and we can’t spend it when we are DEAD so enjoy it while you can.👍🎙

@ptsmonvideo 10 ай бұрын

What were the lengths of the wires? Thanks

@johncooper6894 10 ай бұрын

The tuner is designed to tune a half wave length of wire. I use 33ft for 20M or 66ft for 40M

@garycrum6486 10 ай бұрын

Nice power cord with Anderson connectors!

@johncooper6894 10 ай бұрын

Yes, thanks. Anderson connectors work well. I think I added them to the factory provided cable.

@southernexposure123 10 ай бұрын

I hear a lot of videos real good. I wish I could hear you.

Ең жақсы KZfaq

Пікірлер