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Reviews Categories | Antenna Tuners/Matching Networks | Dentron Jr. Monitor Help

Reviews Summary for Dentron Jr. Monitor
Dentron Jr. Monitor Reviews: 27 Average rating: 4.9/5 MSRP: $79.00
Description: Antenna tuner, mobile?
Product is not in production.
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WD5G Rating: 5/5 Apr 24, 2019 02:17 Send this review to a friend
Not everything new is better.  Time owned: more than 12 months
I bought mine new in 1978 and it still works perfectly. It has seen a lot of Field Days and portable ops.
EI6DP Rating: 5/5 Apr 23, 2019 17:40 Send this review to a friend
Built like a tank.  Time owned: more than 12 months
I bought one of these on eBay at a respectable price. When it arrived I had a look inside and found that the previous owner had modified it heavily :-(
I mentioned this to the seller and received an $25 refund :-).

I removed the modifications and other crappy bits (not much) and fitted 2 new SO239's and reconnected it as per circuit and gave it a good clean-up inside. The front of the Dentron was in pristine condition, so a coat of matt black paint to the cover.

WoW, It is one brilliant atu, very well built and put together. Tune for maximum smoke and away you go. 160m to 10m and very easy to tune.

For anyone who wants a very good atu, if you see one on eBay or your local Ham Sale - GRAB IT.

Delighted all-round :-)
N5XJT Rating: 5/5 Oct 25, 2018 20:49 Send this review to a friend
Grrreatt!!  Time owned: 0 to 3 months
Picked up one at a Hamfest for a good price, took it home and gave it a bath, tightened a couple of knobs, re-solder one wire and gave it a try. Lemme tell ya - this thing will tune the proverbial wet string quickly and effortlessly. Could not believe how well this old tuner works. Faster and easier to tune than any manual tuner I have ever used. Find one - buy it!
K6RQR Rating: 5/5 Mar 13, 2017 21:08 Send this review to a friend
Wonderful small tuner  Time owned: 0 to 3 months
I just received one today and have it hooked up to what used to be a 75 meter dipole fed with coax and a 1:1 current balun. The dipole is now a doublet connected to the Dentron with 450 ohm twinlead. I have used it on 75, 60, 40, and 20 meters and it tunes the antenna just fine. At first I was just tuning it using the RF output meter. That was fine but when I hooked up an SWR/Power meter I was able to fine tune the antenna even better. I'm getting SWR down to near 1:1 on many frequencies.
The Dentron is also small enough to use in my car if I should decide to operate mobile and I can see that it would also be a good tuner for portable operation.
As others have said it is a quality alternative to some MFJ tuner of a similar price. The construction is excellent. It is rated at 300 watts and I would not push that as another reviewer mentioned the damage that could happen to the meter sensing circuit.
The Dentron Junior is only about 5 1/2" wide, 3" high and 7" deep and it lives on top of my Kenwood TS-140S. Despite its small size it works very well and I am pleased with it. Recommended!
K2JF Rating: 5/5 Feb 19, 2017 07:33 Send this review to a friend
the good ol' days  Time owned: 0 to 3 months
I just picked one up used for no other reason than to have a backup in case one of my autotuners conked out (MFJ did just that). My replacement was an LDG autotuner that was fine but when I opened the box and grabbed this tuner it reminded me of how cars in the 1950's were built - like tanks. this is one beauty and works so well I took my LDG autotuner out and plugged this in to work with my Icom 7300. I'm stuck with a 10-20 OCF dipole which the autotuner cannot tune on 40. But this Dentron handles it like a piece of cake. There are advantages in using an autotuner - they're faster. But this takes just a few seconds longer to lower the power, tune for noise level and then adjust the xmitter and antenna match. Takes seconds.
KC2WBK Rating: 5/5 Sep 14, 2015 09:04 Send this review to a friend
Works Well and as Designed  Time owned: 3 to 6 months
For the same price as a new MFJ tuner, you can buy one of these used and get a much nicer piece of equipment. I run an 84 foot wire out the window that terminates to a banana plug that goes into the back of the tuner. Works fine, tunes all the bands I cut the wire for (80,40,20,15,10). I know it's working, I get great signal reports, especially considering the antenna.
N4DBM Rating: 5/5 May 25, 2015 20:01 Send this review to a friend
Great unit  Time owned: 6 to 12 months
Perfect companion for field day or other times when a portable, lightweight design is needed. I had one years ago, now I can't find it. Hope I run across it soon.
WB2KWF Rating: 5/5 May 3, 2014 10:59 Send this review to a friend
AAA All the way!  Time owned: 6 to 12 months
First time writing a review here...but this little tuner is just amazing. Running it mobile with my TS-480HX at 200W with hamsticks or bugcatcher antennas. Now I don't have to get out to QSY...just a short time tuning, and away I go! I can even hook it to my ladder line at home, and operate "mobile" with my full size antenna! HiHi!. I wouldn't be without it!
N4NDX Rating: 5/5 Jan 9, 2012 15:49 Send this review to a friend
Great Little Giant  Time owned: months
I purchase this Dentron Jr. Monitor tuner due to a bad experience I had with my every day Auto tuner when I had to send it back for repair the second time and since I had to wait 3 weeks the first time I thought it would be wise to purchase a small tuner until it arrives to get me by. Well I'm so glad I did because it is an amazing piece of equipment. I tune all bands with no problems even 160 meters that I could never tune with my much bigger tuner and with the Dentron Jr was a breeze. It is built like a tank and looks real nice even though it is very small. I have used 285 watt out through it and not a twitch. If you are in need of a small tuner and happened to find one buy it you won't be sorry.

MM3PTS Rating: 5/5 Jun 6, 2011 00:57 Send this review to a friend
Fantastic little tuner  Time owned: more than 12 months
Well guys ,this is a keeper ,as said it will tune just about anything .The quality is by far above mfj and for such a little box the weight is If only they still made tuners like this we would all be happy amateurs ,well most of us going by the previous reviews .My advice is if you see one buy it quick .
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