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About this product
Product Identifiers
BrandMFJ
MPNMFJ-461
UPC0650619004489
eBay Product ID (ePID)1141087317
Product Key Features
Compatible BrandNot Specified
TypeCode Decorder
Ratings and reviews
Most relevant reviews
- 07 Feb, 2016
Quality of Construction ... Did I say "Quality?"
Having been a product design and development engineer for about 45-1/2 years, I thought I've seen it all. What surprises me with the MFJ-461 is that a manufacturer would attempt to peddle a marginally designed product to many technically oriented buyers that can see and understand poor assembly when they see it. The electronics seems fine, but the physical packaging is really bad folks. After the battery is placed inside the compartment, the battery cover is very difficult to slide on. I can see this problem varying amongst different units. The battery sits on a folded-over, 90 degree display cable bend that rests on top of the LCD display and circuit board. The folded-over ribbon cable bend also rests on top of the display's metal mounting tab. So between the bend radius of the ribbon cable and how well the metal mounting tab is bent down to the circuit board surface will determine: Whether or not you'll need a vise to squeeze the cover in an attempt to install the cover. Upon chitchat with a MFJ support person, he said it was OK to squeeze the heck out of the battery cover to force a closure of the battery cover. I say: Give me a break ... well, "break" is the keyword here. If you squeeze the dickens out of the cover, battery, display and cable ... then you have to ask yourself, "How long is this going to last?" I took apart the Morse code reader and pinched the cable bend with a long-nose plier ... that reduced the ribbon cable bend radius. Next I pushed down all the way the display's metal attachment tab which folds over onto the circuit board. Between the cable radius and metal tab fix, I gained about 75 mils. Instead of the original two layers of black electrical tape placed on the circuit board inside the battery compartment, I opted to use yellow Mylar tape ... much thinner stuff. With these changes, I managed to have the battery compartment cover slide on. I would call the cover placement an interference fit after all the changes were made. One big eye soar was the red LED protruding at a steep angle out of the side panel. I couldn't stop looking at this grotesque reminder of a poorly designed assembly, so I removed and re-inserted the LED so it came out straight. After all this, I still had to make it work ... which it didn't work from the get go. It seems the microphone connection was marginal because of the input audio jack contacts. Not surprising as the jack's electrical microphone disconnect contact surface is used in a "dry" circuit ... meaning very little electrical current. Any contact oxidation could provide problems. But I'm willing to deal with a solution for that another time. After wiggling a connector in the audio input jack, the unit began reading the Morse code, which it does very well.Verified purchase: YesCondition: New
- 04 Jul, 2019
Inferior code reader MFJ-461
Did not work as indicated in listing. This is a hit or miss device. Missed lots of text if you can see it on the poorly designed LCD . LCD background makes reading text hard. Unit has to be held at a certain way to see text otherwise it blends in with background. Trust me. Don’t waste your money. W4RVVerified purchase: YesCondition: New
- 23 Feb, 2021
MFJ code reader
This code reader seems well built. The display viewing angle is kind of narrow and there is no backlight so it is a little difficult to see sometimes. There is two adjustments to make the unit operable located on the back and require a small driver to turn. These are turned to sync the unit with your cw audio signal. The unit needs to be relatively close to the audio source to work. The microphone and sync light is on one end and needs to be monitored during adjustment. With the microphone and light pointed closely at the source with one hand and the screwdriver in the other the adjustment is made. It's not terrible but awkward to do. The price is a little high too.Verified purchase: YesCondition: New
- 06 Feb, 2017
Easy to use
The unit is easy to use. It is a little bit tricky though. Users must 'tune' the radio so that the morse code sounds in the frequency range that the units is sensitive to. Then it works well!Verified purchase: YesCondition: New
- 06 Mar, 2024
Performs really well
A quality must have instrument.. place the mic side near speaker and some how this device deciphers code extremely well without error.Verified purchase: YesCondition: New
- 27 Oct, 2020
Small compact and works.
Works as expected..I like the wpm display..works best with a cable.Verified purchase: YesCondition: New
- 22 Mar, 2022
No Quality Control
When you put the battery in the door will not go back on.Verified purchase: YesCondition: New
- 30 Dec, 2015
Requires very high volume to work.
Very high volume needed to work. Does work well with direct connection.Verified purchase: YesCondition: New
