Видео

MFJ came from this gentleman name??

It's too bad he didn't block the glare for the overhead viewer - it makes this presentation basically useless.

Thank you. N0QFT

Thank you.

Thank you. A good idea.

To respond to the question most asked of Martin, here's Mr. MFJ himself :) ruclips.net/video/ypj7J2y-bPQ/видео.html

HUGELY helpful. THANK YOU!!

How about cutting the cable in half? Test one and if it's a good connector then add another one to the other end. Test that and cut close and replace if needed till you have a good smaller cable. Replace the bad connector on the other cable with two good connectors. Will that work?

wow.

Great answer...

Mr. Jue is totally cool.

Unless it’s ocf. Then I assume it’s a percentage. I’m gonna have to tune my ocf in the spring.

A lot of criticism for Mr. Jue for his products being "junk." His company may not be the best at manufacturing, but as an engineer his brilliance is well respected especially among those in the Engineering Department at Mississippi State University where he is a professor.

The constant throat clearing is annoying as hell..

Why did you get a .3 feet difference between an open any shorts? That makes a difference because it is like 2 1/2 inch difference in length. I noticed something with mine when I get it if I went on certain frequencies like really low one or 2 MHz and I was using the meter with RG58A/U and I noticed it indicated that an 18 foot piece of Coax showed a distance of 3590 ft. However when I just did it between 120 and 150 MHz it indicated the correct amount of feet.

my mfj 259 does not ask for a velocity factor.... where do I input the VF?

have never heard an oriental with a southern accent

Stop coughing!

boa tarde, qual balum devo usar para 80/40m, na g5rv, dentro de meu acoplador manual? obrigado!

I love Martin Jue! He is such a kind man. And I could listen to him speak all day... he's so laid back.

Can't get my MFJ 259C to go in advanced mode. Looks like the Gate button does no do anything. When I press the get and mode button together it just scroll through the mode but not advanced mode.

I enjoy watching Mr. Jue's videos. He is an outstanding MFJ rep. For years I've seen MFJ sales reps at area hamfests with the latest antenna or morse code translator. I'm now familiar with one person to look for at future shows. I bought a used MFJ-269 one week ago and I'm growing frustrated. It appears every antenna I test in the impedance R / X mode indicates an SWR value greater than 2 if when I attempt to determine the antenna's resonant frequency at 50 Ohms Impedance. The antenna is a I'm testing is a COMTRAK D-130 vertical mounted on a tripod / 10 foot mast with 20 feet of RG-8X 50 Ohm (Gray in color). I've read over the manual but could not determine if a setting exists to any to reset the analyzer to factory specs. I'm somewhat hesitant about entering and altering any of the values in the advanced modes of operation Any suggestions fellas?

Can you check the Balun for common mode currents with the analyzer?

Unfortunately, he does not demo the MFJ 259 or 269 to show if the readout is series or parallel Xc or XL. The later models do a conversion to parallel or series Xc or XL if needed. The maths for division of imaginative numbers is complicated, and this is done by the MFJ 269, but not the 259B. Knowing your antenna's R and X really helps if youre having to change the length to reduce the XC and XL to near resonance provided you have a series 50 ohm resistor in series during the test.

my audio was sounding garbled. so I tested the coax showing a short so i am about to lower my antenna and do this test to find the short thanks for the tutorial.Jim

excellent , ty

you said you can measure the velocity factor with this device, how do you do that?

Once I get my balun constructed I will have to do that. I will have to dig into my collection of resisters to see if I can make 200 Ω.

Good ol boy needs some cough drops...

Never in my life have I heard a asian with a southern accent...

The BALANCED side would require a 200 ohm load @ 4:1 and 50 @ 1:1

Do you need anything attached to the balanced terminals? Looks like you have something attached

Looks like Mr. Me-Yagi got a cold.

rf esta fazendo mal para a garganta dele rsrsrsrsrsrsr

Cont: whereas the MFJ antenna analyzer has a much broader freq coverage. I could have worked with the unit but for my needs I would have to chart out the SWR and the impedance on paper so that would be a bit time consuming. Both analyzers have strong points and weak points. I also looked at the Youkits FG-01 but the display is the size of a postage stamp and it cannot interface with a PC plus it takes a special battery. The meter I just ordered takes 2 AA batteries and that I can live with.

Thanks for that info. I decided to give the RigExpert AA-54 a shot so I changed my order this morning only because I want to take advantage of the LCD screen and the sweep features. I'm working on some home brew antenna designs and this will allow me to view the bandwidth for a given band in a chart format at a glance. It can also interface to a laptop too. The only disadvantage is the AA-54 is only good from 1 Mhz up to 54 Mhz. Cont:

It's fantastic! It makes testing antennas so much simpler than using the SWR meter on the radio. I also used the capacitor testing feature to test an air variable capacitor. It was nice to be able to verify that the capacitor was working right. This analyzer was well worth every penny I spent on it.

I just ordered one of these too. How did it work out for you?

I ordered one of these. It should be arriving in a couple of days! It's pretty cool that you can use it to test coax. I am sure I will get plenty of use out of my MFJ antenna analyzer. Thanks Mr.Jue

Wow, this is one intelligent man, He started buildng stuff in his Garage and now he has one of the largest American amateur radio accessory companies, he bought companies that could not make it and made them work. yes he is an American. positive proof if you really want to do something you can.

This was some great information.

Wonderful! Martin makes this sound so easy - like anyone can do it. And, guess what, you can. Wish there more videos like this one.

Did any body notice an error in the example? he states 7.2 Mhz but the first formula is for 7.1 Mhz ???? and the rest are 7.2 Mhz ???? Oops did not realize he actually calculated it longer then he wanted

Did any body notice an error in the example? he states 7.2 Mhz but the first formula is for 7.1 Mhz ???? and the rest are 7.2 Mhz ????

Be nice if he would take some cough medicine!!

Its probably been mention before , but it seems that there many issues with the series . There in any order , The 1st one no volume of the speaker , and too high on music & clapping . Then pore lighting with up front display . It would seem to me that good production , would be a value relative to sales , I know that it was a club production , but if I was MFJ , I would try to do some editing to keep my business in a good light [ all puns intended ] . All that said very informative .

If you listen to this with headphones you will have your ear drums blown out at the end because some moron is trying to be clever with his LACK of editing skills.