ATU-130 1.8-50MHz Auto Tuner

[Mudfoot]

Picked up another cheap tuner. Didn't come with any documentation whatsoever. Only have the Amazon description to go buy. Says handles 200 watts, but description say no more than 150 watts. Minimum tune is 5 watts. Power meter measures minimum of 1/10th watt.

Power: 9-15 volt @ 500 mA

I like the auto and bypass. Seems better than the other two I own. Getting ready to test some longwires soon. Can't beat em for the money.

 

[w9cll]

I have been looking at these on Aliexpress, glad you took the plunge so I can see how they work for you.

 

[Mudfoot]

I have been looking at these on Aliexpress, glad you took the plunge so I can see how they work for you.

All three are working great so far. I'm only getting around 3 hours from the unit with internal battery. I'll know more once I get my wires up.

 

[Bashful]

I will pull the trigger on the ATU-130 in a few days. The price is right and it appears good value for money. I run QRP (about 5 watts) using my rig and this power level should be well within decent operating limits for the ATU.

The github page for the ATU-100 is here:

GitHub - Dfinitski/N7DDC-ATU-100-mini-and-extended-boards

Contribute to Dfinitski/N7DDC-ATU-100-mini-and-extended-boards development by creating an account on GitHub.

github.com

and a local site to me also hasgood info on the ATU-100:

GitHub - Dfinitski/N7DDC-ATU-100-mini-and-extended-boards

Contribute to Dfinitski/N7DDC-ATU-100-mini-and-extended-boards development by creating an account on GitHub.

github.com

 

[Bashful]

bugger, wrong link. It should be:

Building & Improving the ATU-100 (N7DCC) Automatic Antenna Tuner. – Mersey Radio

www.merseyradar.co.uk

 

[Mudfoot]

If I recall, 5 watts is the minimum power to initiate a tune. The accuracy claims are rather bold. It pretty much matches my LP-100a as far as power readings. They don't package them for shipping very well.

 

[Bashful]

Pulled the trigger on my ATU-130. Cost £43 (free shipping) plus Chinese tax minus £5.00 coupon. All in total cost - £44.00. Details of item here:

https://www.aliexpress.com/item/1005007712422998.html?spm=a2g0o.order_list.order_list_main.5.21ef1802UAidc2

 

[Mudfoot]

This is the inside. Only thing I noticed is the supplied DC barrel plug fits very tight. It barely even inserts. I have an assortment of plugs and couldn't find one that actually fit correctly. My first mod will be to replace the DC receptacle. I have a couple battery pack housings I'm using to power my tuners.

So far, my only complaint with these tuners are the display size. Terribly tiny.

 

[Bashful]

Yep, 5 watts is the lowest inpout to initate a tune. Thanks for the info. Did you get a manual for your latest buy?

 

[Mudfoot]

Didn't get anything except for an RCA plug and 6" power lead with incorrect size barrel plug. Only info is what's in the Amazon listing.

 

[Bashful]

OK on the missing manual which is normal for a lot of Aliexpress stuff. If I find a decent one, I'll post it here.