Hello sir I got a nitro 300a with bab capacitor which one is the one you would recommend me to change it?

Maverick kid here I have a DNA 400 works on low click on high and it blows the fuse

Sale me that Pride Bro. Or shall I appropriately inquire, is the amp available to buy? Thanks

Just use the old fluke on diode test.

Thank You, Great explaination!

Glad you are better Ned

Thx Dr.

Good to know, Thanks.

If you have a meter that is sticking in a certain place try this. Set up a small A. C. power transformer and a pot to divide that voltage down. Set the voltage to zero and hook it to your meter, then slowly turn up the voltage until the meter needle is in the area of sticking. It will be vibrating quite fast because you are putting a.c. on a d.c. meter. Let the meter sit with the needle vibrating on the area it sticks. Give it at least an hour. Overnight is good. After working the meter needle in the area is was sticking, it usually frees it up. Meters usually stick due to not being used. The lubricant hardens. I’ve recovered many meters with this method.

Glad you are feeling better. I use a AAA cell and a 20k resistor in series with one lead.

Can t you just use a volt meter on diode tester setting ..negative to negative and positive to positive. If I'm not mistaken.

Do you know where it is on the mark ii?

The early mobile D&A Bandit used a strange circuit that had a tube keying circuit. So the power supply squealed all of the time it was turned on. The other strange thing was that it used the power output tubes as a preamp on the receive state! Has anyone out there ever seen such a beast?

Basic electrical safety rules: if you aren't feeling well don't work on it. It can wait. Electrocution tends to be a permanent thing.

Bravo! Much safer to test the low-voltage stuff with the scary voltages turned off. That little power supply is a swiss-army knife sort of tool.

Hi there... Where can I get the 6 Caps you have in the MLA-2500 ?? Please let me know.

Hello sir i got a nitro 300a with capacitor problem witch capacitor i could put in there to remplace the original one??

A nice explanation Doc.👍 I ran into something that I hadn’t thought about the other day. I got a Sonar mobile amp with 4 power output tubes. It also has a keying circuit that uses a tube. So when you hook that mobile amp to 12 volts, the big switching transistors start high frequency switching, even when you aren’t keyed. The little switching tube cannot work unless that circuit is producing high voltage for the keying tube. My ears can no longer hear them switching, but my wife put the hammer down on me!🤣 It sure is nice to have modern electronics available.

Ranting? no. Long winded? no. I learn every time you produce another video. Sorry you are under the weather, get well soon.

2.2uF? 🤔

Help with voltage spikes? Small, high voltage, cap?

So these show pep too

Thanks - answered a lot of questions for me!

I have a few of the 776’s and want to ask where you got the light brown cord? All of mine are junk. Oh and I think Motor Mouth Maul sounds like a broadcast station. Awesome sound.

That's a rare skill. Crawling through the wires and making a map.

Thank you for taking time to share your knowledge. I know these videos take a considerable amount of time and effort. I certainly appreciate all you do!

Cool.

Thanks for these videos you make. Keep up the great work.

Back in the 80’s I used to design and build CB amps for fun. I built one that started as a simple 2 sweep tube amp, about 100 watts, grounded grid. From the cathode of the tube I used a regular Z-28 choke that went to a relay and then ground. But then I cut the circuit on the ground side of the choke and installed a wire wound variable resistor. I think it was about 2,500 ohms and 35 watts. With that I could totally vary the output watts of my amp. Not only that, but if I turned it down to about 25 watts output, the swing was incredible! People on the receiving end were amazed to see their S meter smoothly go up and down as I turned that resistor🤣

Hi Tram Dr. Can you do mare valve radio video I really enjoy those ones and would like to see the General sb 72 mine is still not working. 🤙

Weird stuff Doc!🤣It sure is great to see someone who can draw schematics! I don’t want to brag, but I thought I was the only guy left who knew how to do that. I used to sit in the back of church and design circuits on a pad. I was sitting next to a guy one time drawing a circuit for a regulated power supply and he asked how I knew it would work? I said it has to. The design physics and math are set in stone. Next week he asked me if it worked and I said yes, exactly as figured and drawn. He just shook his head! That was back in the 70’s. Are there no young people out there today who can design and draw circuits? Please tell me if you are young and can do so. Thank you sir! You are a breath of fresh air!

Class in session. tramdr lecture.

It should be a keeper after all that work ! I like it 👍🏻

How much is a clean diamond d201 worth...works great.

How do you clean the metal board that they sit on?

Ele viallr rt buenos DX en 11m Canadá

Yes I looked this up today Iam replacing both of my relays in my phantom putting relays with 10amp contacts mine would key up and not put out anything the meters would show current didn't won't to burn up my tubes. Lol too expensive!!

Rocker switch

Thanks for sharing this with us. I have never thought of this problem..

I have the MLA-2500 purchased new in the late 70's. It was used very little but I'm wondering other than the electrolytic capacitors how well the tubes and certain other parts have held up over the pass 46 years. I want to restore it and wondering if tubes degrade sitting around? Any tips would be great to know. Thanks Dan

I had one of them and bought it new. there is on on Ebay for $260 + 112 shipping. has I think the correct band switch knob on it. I got it for CB about 1971, I cant remember the year exactly I had all the neighbors mad at me. Caused the worst TVI ever

do u have the wiring diagram for a courier centurien,

I gotten one of these from a friend of mine didn't have a name on the front of it. The insides of it look the same yours alot cleaner. Do you have a wiring diagram for this amp I am restoring mine. Thanks 👍

'Congrats' on the sweet meters!' Sure is nice feeling when that package comes and the seller took the time to safely pack this kind of equipment for the ride! I'm always holding my breath when unboxing Lol. Doc, Question- I'm finding myself having to use 6ft and even longer jumpers to get to certain radio's from the amp on my tables. Things seem to be okay with this.. my match changes slightly (all staying below 1.5) and of course the amp tune can be slightly different as well but again nothing too different. I just dont want to mess anything up. Whats your take on jumper lenghts from meters to amp to radio? That would be a great video topic for you to do! Really enjoy your videos and thanks for other questions you've answered of mine! Been some crazy DX lately.. im always listening for you on the air, hope to hear you on AM or SSB sometime! 73' NB160 Jackson✌

Hey tram doc what model is that workman meter thanks buddy hope you are doing well sir

What was the tubes name or what type? Thanks

Thats pretty cool

I have a Galaxy 1000, “1feeding 4”. I also have about a 1000 tubes I got from buying a ham opener out. I want to fix it and your video is going to be useful. Thank you for taking the time to share your knowledge and talents. Wish I could talk with you.

Semes like a Reverse -Preamp to me. LOL

would this tuner work on 11meters and 10 meters?