W410A 200W Automatic 4-Way HF Antenna Switch

Here we take a look at a cool little antenna switch that is both versatile and super cool as it supports and promotes development within ham radio.

Power handling is 200 watts and supports either 4 antennas and 1 radio, or 4 radios and one antenna. These can also be stacked for more devices!

Antenna Switch:

Nextion Screen:

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#TechMinds #SDR #HamRadio

[andrewrudlang]

That is so cool! I wish it worked up at UHF though.

[Tokyo.JLAJE]

Matt! Just tape the hole with masking tape. It cuts the racket down a LOT.
Or dribble some hot snot on the hole. Both do the job.
73s
John

[GLWT]

Excellent remote control demo with the screen - thanks 👍

[jhmcglynn]

So I operate digital modes (WSJT-X, JS8call, VARAC-HF) remotely from my iPad using an APP called JUMP. This appears to be the perfect solution to switch antennas remotely. The down side is how do I insert the frequency ranges into the switch?

[turbochardged]

When i have loud buzzers on devices i remove them and install a LED with a resistor so i have visual indicator instead.

[socallars]

Very nice! I have to say, this is the premiere channel for bringing new tech goodies to the attention of the amateur radio community. One of the best subscribe buttons I've ever clicked!

Hey, do the specs specify the level of isolation between the four inputs/outputs? I'd love to switch between four different transceivers without worrying about damaging the ones that aren't transmitting.

[judhi]

I am too lazy to unsolder the buzzer, so I just apply several layers of electrical insulator tape on it. Happy with the faint beep now 😁

[mikewillis]

It is HF only because it is using standard 2A Omron G6S relays and not the RF relays that cost considerably more. For HF that's fine, a UHF model would be much more expensive to make. A higher power version would need larger relays. I like the idea of terminating the antennas, though I don't know if it makes much of a difference in practice. I would advise against connecting 4 transceivers to one antenna as I would worry about accidentally getting a lot of power into the receiver input if the antenna port has a high VSWR. It should be OK but risking £1000 radios with £100 switch perhaps better safe than sorry.

I have made my own version using an Arduino, it listens to the CI-V traffic and selects a relay based on frequency. I also made a Bluetooth version for up to 8 relays to go with my IC705, though bluetooth is optional and it can also take a CI-V port, a 4 bit band select or a band voltage input. The relays and their control are separated so I can use coaxial relays at VHF/UHF or frame relays for HF. All on my webpage if interested.

[XBKLYN]

I'd like to mount this unit in my weatherproof junction box outside. If I program it for auto mode will it remember that choice after a power failure? It would be inconvenient to have to manually reset the switch if it loses its mind due to surges, disruptions, etc.

[TankIOW]

After watching this video, I used your discount code and ordered two of them, thanks, it's a good discount that was too.

[konstantinjirecek]

The sockets on back side seems too close together. Screwing antenna connector to the middle ones can be difficult.

[psychodadsn]

The ports are not shielded individual from each other or the input. Could this effect the attenuation protection of each port? Great video as always, thanks!

[allen]

Wow. Exactly the format I need for my existing outside box. Unfortunately, it's way overkill. A simple relay and manual switch to control the remote box would be all you need. I'll keep looking.

[scanflight]

I'm using ELAD AMS-33 for this purpose (Antenna matrix)

[foxonemdfh]

Matt where did you get the editor from I don't seem to be able to access the nextion website, thanks for great review I have ordered the switch and a screen

[TeamYankee]

For the buzzer... dab a little hot glue in there.. to quiet it down a lot. Too loud then remove it

[MINI-X-RADIO]

Excellent concept,
But a perfect example of a Product designed without actual "Real User" input.?
All sockets should be on the rear, and the Port selector and indicator on the Front
Maybe a Version 2.?

[apollorobb]

FN switch should be on the same side as the 4 ports so you can manually switch and see which port your on. Chinesium at its best . This is what happens when you build a product with 0 field testing .

[LawpickingLocksmith]

Overengineering at its zenith! But hey do you expect me to mount a mirror to see the other side of this box? I would try bluetack first to silence the nasty buzzer. Sure a whisper freak could get even more nerd satisfaction. Personally the old mechanical switch that grounds my radio if I walk away for lightning protection is still the DX choice where you can have extra power and have redundant coax.

[PAMWO]

Can you please share your Nextion HMI file as reference ? Many thanks in advance