Відео

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CFT1 was a really fun build. I've built two QMX radios and I built the CFT1 in less than half the time. The fact this rig comes with a pre-wound toroid option is pretty incredible too. (In my opinion, the toroids are relatively simple to wind as they're very few turns). We're lucky to have someone like Jonathan innovating in the CW space here in the United States! P.S. the CW receive quality is top notch!

Very good show ! Love that CW transceiver. Nice Superheterodyne . Not a SOC radio. That DenCo battery perfect for that . And I am not a CW ham and I am impressed with that. Love the KIT options. 73

Team Replay first

I've never seen so much useless stuff in one place in my life.

Steven Pan, ex MFJ VP, led the Intellitron line for Robbie…

"Do you game?" "I'm grown..." 🤣 I think propagation disadvantages affect regions. I've seen my own seemingly poor results, then later surprised to see that I placed very well among my peers (bad conditions for all of Roanoke Division?). I like that the awards are regional in VHF contests. I compete as a "Limited Rover," which is the lowest four VHF bands and with 100W/200W limitations, depending on the band. That way, I'm not competing with the QRO or 10-band stations. There are "FM Only" and "Three Band" (6/2/440) categories, too, though Rovers aren't eligible. I like the Mobile/Rover/Expedition categories in the VA QSO Party, too. Plus, the contest is suspended overnight on Saturday to encourage operators to rest. And AMEN to real-time scoring! There should be some time slop for Rovers who may operate someplace without 4G/5G connectivity. But, on the other hand, there are some who audio record their QSOs and then log them at their leisure long after the contest is over, all while declaring that they're "single operator," which defeats the time constraints of the contest. Good ideas and fun show, guys! -Scott

Thanks guys for letting me enjoy Huntsville from my Lazyboy; this was awesome!

Why haven’t I jumped in my _DeLorean_ and gone back to when copper was a lot cheaper and bought a few hundred feet of *_”wahr”?_* Oh, yeah … _Digikey_ and _Mouser_ don’t stock *FLUX CAPACITORS* …😀 I used to work for an electrical contractor and _”THHN”_ was his favorite. The insulation was a lot more _”slippery”_ and easier to pull through a conduit. Also (at least back then) it was certified as _”plenum wire”_ due to its 105° temperature rating. As for the _”tinned copper”,_*skin effect* is *NOT* your friend (for *antenna* use). *CCA* _(copper clad aluminum)_ is better. For DC use, it’s just the opposite. *73 de AF6AS in **_“DM13”_** land*

I'm a cb radio guy and had a great time think you guys so much.

Uncle Jessy-lmao

Thanks for doing this live stream I really enjoyed it. KO4HPC 73

Great video of HUntsville.

Another great hogfest 😂

I'm "the guy who works there" that waved, KK9W. Good to see you!

I make Docks for those Dells Havis Brand..

Ham in scooter made bee line for me and ran over my foot!!!! Lol 😂

Great livestream, im getting ready to build a doublet, I'm looking to use DX50, with the doublet Center from Callum at DX Commander!

#TeamReplay #MillerLites #BaldEagles

Wackers give scanner guys and HAM’s like me a bad name.

The rabbit ears that come with the rtl-sdr is a really good tool to experiment with in the same way. You're showing a pretty good demo of how the feed point impedance changes with both angle and feedpoint position. Centre fed dipoles aren't single band - try doing a sweep from 100Mhz - 500Mhz on the VNA, you'll see the dipole work on both 2m and 70cm. If you change it into a 1/3rd feedpoint you will see the 3rd harmonic disappear but the second harmonic will come down, but they will both be higher impedence (smaller loops on the VNA). Inverted V's have lower impedance, you'll see the loop grow around the centre when it's lower than 50ohm.

This episode was brought to you by the new word, SWERS!😂👍

We still have guns. The UK can suck it. K5SFC

Please, please, please advise your viewers that they should not think that only half of the dipole radiates ! You are setting the clock back 100 years.

So, Ape, If the reflected power at the feedpoint (when there is a mismatch and you have those terrible swars) gets burned up as heat how to you account for the performance of a resonant dipole (say 50 ohms) fed with 600 ohm line? de Rick, K2XT

"The radiating vs the non radiating side of the dipole" ????????????????? Cringeville.

great job. The big soldering iron you are looking for are the ones made for stained glass window work. search for that .I use 100 watt weller model W100PG in works awesome. solder's big stuff just great. Amazon has them. what i use for the big stuff. 73

I wonder what the reaction would be if nobody disagreed? LOL. That you get feedback is a good thing, it means people are listening to what you have to say. Also, it is not beyond possibility that in cases they may be right.

5:1s look weird but that's pretty.

Rust isn't terribly conductive so it probably does weird things to the velocity factor.

Measure twice. Cut 3 times.

Is 10m open right now?

Let's go! Looking forward to seeing you guys!

Dreamland Barbeque. Get the slab of ribs. You won't be disappointed.

Connor's Steak House, you will thank me later.

"Ham Radio Celebrities..."

@thesmokingApe What did you learn that would have you using something other than decent speaker wire these days for a bifilar winding for a balanced dipole center? It hypothetically strikes me as a reasonable choice, since a 1:1 isn’t going to heat up dramatically and melt your pvc insulation. And sure it could be a little thinner insulation; therefore wire held closer to the interior of the core, but people use coax which has a reasonable insulation thickness as well, and seems like the consistent spacing between the two wires is a nice thing. Is this because that speaker wire wasn’t pure copper? Bc you suspect maybe the PVC might not be invisible to RF? Or just some combination of uncertainties about the specs of the wire bc it was likely cheap?

#TeamReplay

Sotabeams has an easy doublet plan free on their website

Unboxing videos are boring to me. I know some people like them, but I fast forward to when people talk about or use the radio.

Watched on replay, great information. the Ladies need a CaHR Tumbler and then you can monitor thier intake. LOL

NorCal doublet is great. The speaker wire antenna is the same thing. NoCal is super light and portable

Tune it for the height you deploy it. That gives the best idea of which balun is best for you. Great antenna, it is the same set up needs as a dipole. I love it for portable ops where speed isn't an issue

I have used a ~100ft 300Ohm ladder line doublet with ~72 ft radiating elements at 30ft and been able to tune it with the G90. The XPA125b and x6100 could only one or two bands.

Good show

I got my day started off with pota

Bottom Line Up Front: Balanced feedline fed dipoles (a doublet) can work multiple bands without suffering power losses from high SWR like coax fed dipoles, all else being equal. Long winded version: Why a doublet? It's best use-case is when you can only fit one wire antenna and it has to work multiple bands. Having to work multi-bands means the antenna is mostly going to be non-resonant and SWR will be anywhere from "ok" to "OMG!" high. More often than not, it will be higher than a built in tuner can handle. With unbalanced coax, high SWR means you are losing power heating up the dielectric, the balun, and whatever else is resisting the flow prior to the feedpoint. With balanced feedline, the typical dielectric is "air" and it does not lose/sap power on the way to the feedpoint (well - it still does have **some** loss, but it's negligible compared to coax). And as long as the radiator is at least a half wave length (or longer) for the freq of interest, it will happily radiate whatever power you can get to the feedpoint regardless of resonance. The trick is getting that power to the feedpoint as intact as possible. Coax can be super lossy in this use case (multi-band, single wire antenna), where balanced feedline isn't, relatively speaking.

Tractor Supply has electric fence insulators that are a uv resistant plastic tube (about 5"). Makes a good ladder line spreader. Drill 1/2" from each end, thread wire, shoot hot-glue in the end of the tube to fix it in place on the wire.

If you supply the wire and 3d printed spacers the customer can make their own ladder line.

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