Toshbia 2879 VS Three Different Brews Of China HG(HuaGao) 2SC2879 Transistors TEST! 

Great video ... and I like the art. You have patience my friend and FYI my 2 x's HG 14-01 plus 2 x's DEI 2879 are still working great for the past few months despite my attempt to blow them up. Talk to you soon

I would think that life of service/reliability would also be a factor. Unfortunately, the most cost effective way of doing that is by service in the field.

I have four toshibas running at 21 volts, how much can you volt the chinese copies? can you do that test?

I will just stick with my DEIs they are performing just as good as the HGs & the HGs are just as good as a Toshiba. It's how you run your equipment that matters most. Everything has its Limits.

Dónde compras esos transistores?

I noticed you are selling these on "the auction site." Does anyone know if these last as long as the Toshiba transistors? How long have these been available? Chinese stuff just does not seem to be as well made as their other Asian counterparts spec wise. Even the gold plating on the solder tabs looks a little cheaper to me. If they last, then half the price is a good deal (60.oo µ$ for a matched pair at the time of this writing), if they don't last as long as Toshibas then to me it is both time and currency wasted. I welcome your comments. Keep up the good work Rekindling The Reformation !!

A mid-1970's SBE piece of furniture on your desk.

I have a Texas star 667V If the variable power button is NOT engaged, Does the variable power knob affect the power output of the unit , or just the dead key?

I have a 667 that needs to be checked out but don't know how to get in touch with you Thanks , Dreamer

so if you just talked into the mic in a normal tone of voice - you might see 60 watts?

what is the reason for the stop production of these pills? what would it tKE TO "SPECAIL ORDER" THESE PILLS? is it the materials? the u.s. gov./asian gov. put a stop to this? and the tubes as well..... is there a link for this info?

what kind of party is this... my wife " what the heck are they doing to that cow" testing the pills honey.

where do you buy your amp parts ??? like Metal Clad Mica Capacitors .???

On a Texas Star 667V , If the variable power button is NOT engaged does the variable power knob affect the power output of the unit or does it just affect the dead key

What is the break down voltage of these devices? What is the gain? What sort of SWR load can they take before they fail? What the inter mod on these? How come quality control is so bad they can have 3 different performance levels on one transistor? How come their are no specification sheets for these and some standard they hold to? Why are more people than ever having amp failures pretty early in the life of their amplifiers? I am guessing you get them for $9-$15 each in bulk since people sell these for $33 and less.

im over here up late testing old transistors finding out which ones are PNP LOL Mr. Gatekeeper has inspired me thank you LOL now im a crazy amp lovinn fool

The testing is invalid since the bias needs to be adjusted to the same value for each transistor so the outputs can be properly compared.

i've been running the Huagao MRF422 for four years now in my base amp, not a problem, and more power out on a bird than original Motorolas..

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Cool u the man

hey brothernnnnn nice video watched like 3 times now make wanna do big HG build LOL yeeee

Hope they work out, the hobby needs them.

i need to send you the plans to build a analog gain tester. it's not a scientific device with balls on accuracy.. it's only used as a comparison tester. then you can compare the transistors beta. as for the pair that didn't produce more power with a hotter radio. could you have reached saturation with the lower powered radio?

Rough to watch

what gave out at 10:18?

nice art brother lol. peace 68 oHIo

looks like 16 rms was more than it could bear

It’s all about radio drive.

im on lap top its still me just different then my home computer ...havent seen Thomas or whoever that was in a while LMAO he would always say wheres my 2x4 just messing around

nice vid buddy

Is this lestercustoms guy?

I am not trying to be hard on you so I am sorry if it came off that way. I just hate how almost all of the builders have gone to these because they are cheap. I think that if an American is going to custom make anything by hand they should use a design and parts that will last and perform. You would not hand machine a custom rifle with steel as soft as butter so why hand build an illegal to operate on CB radio amplifier with junk parts??? Like Larry the Cable guy would say " That's like wiping before you poop it don't make no sense!" ....The gain is the most important thing along with rated watts so a 100watt transistor with 13db gain is usually going to grossly outperform a 100watt transistor with 8db gain etc.....Not on a meter but in real world performance on the air. I do not talk to a watt meter at the other end I talk to humans. I want make power and minimal heat. I also do not want to pad the hell out of a device. I have seen linear that have worked close to daily for 5,10,15 years with no parts failures at all on the other hand it seems like few modern custom built amps can make it more than a few months with out failure and few can make it 2 years of daily use with out failing. That means something is wrong! If our TV, Computer, Microwave or radio had that many issues no one would buy them! I do not think it is a matter of having a pretty circuit board or anything like that. I think it comes down to matching and biasing. If the matching transformers are not done right and the biasing is forced than nothing else matter. Poor input and output transformer design means you lose efficiency on input from the radio and output to the coax. Forced biasing just means that amp is roaming all over the place between A,B and C directly related to input power and impedance fluctuations which equals all kinds of harmonics and wasted heat. That heat is watts not working for you but against you. If you look at true amateur (RM does not count)transistor amps they do not have any of the issues you see in the CB hobby. I think the days of forced static biasing with sand bar resistors is gone. With the price of quality transistors being sky high anything less than thermally control biasing no matter what class you want is a dead horse. I also think that for people wanting to chase after big watt number's broad bandwidth transformer coupling also makes no sense. I just bought a 1 transistor amp that uses a MRF454 that with 5 watts in makes 200 RMS watts that are harmonically clean. That is in true AB1. Sure it only has a band width of 26Mhz-28Mhz but what great power output. IF I set the radio up for 1.5watt dead key and let it swing to 6 watts it will be a beast with one transistor. On SSB 12 watts PEP input will get me 348 watts out. Now imagine you built a 4 transistor unit like this and where getting 800 watts RMS from a 20 watt drive. So now a radio with a 5 watt deadkey and 20 watts of swing would be a beast on the air. Want more than 8 watt dead key and 32 watts of swing etc....No driver needed if the right radio is picked right and tuned right. Imagine driving an 8 transistor amp with a single well chosen driver. I just think that if you are going to spend money on expensive parts you should get all of the power and as little heat as you can. It should be efficient and durable. Why spend good money on good parts to get 1/4-1/2 as much power out and generate 2x-3X times the heat and blow up transistors??? The only hard part would be getting your customer to turn down the power driving their amps. You should not need that much imput power to drive an amp!

Hello my georgia friend : do an FM mode test pls for the Europeaan viewers. peek power says nothing continu fm mode power rulez over here thats real power ! anduhhwwmmm feed the cat .... shes hungry...

nice video

How am I a new? LOL

What is the actually break down. Did you bother to watch the video? If so you have your answer. If you watched it and do not get it than I would be wasting my time to spell it out for you. I expect people to pay attention and to have some comprehension skill!

First of all what would my knowledge of code matter 30 wm or 200wm it has no bearing on electronics or amplifiers. As to ARRL if 1 out of 100 CB'er understood 1/10th of what in in the handbook we would not have 99% of the issues we have. Power usage is not the problem on 11m band it is over modulated radio's with no limiter's, poorly done NPC mod and super swing kits!!! Poorly designed non-linear amplifiers improperly matched with poorly designed biasing and shunting to ground does not help either. If people where not ignorant than we would not have these issues. If people understood a few things they would not fall prey to radio/amplifier butchers. I am damn glad in some ways because as long as idiots are over modulating, over driving their amps, using amps that have poorly designed transformer coupling, poorly designed biasing, generating all kinds of heat and little RMS power I can compete with 1/3 the number of transistors. That means a modern vehicles not suburbans with V8 and all kinds of alternators or generators, that means smaller vehicle, less equipment, less wires, better fuel economy and less money tied up in gear. My gear is in my daily driver. Why use 16 transistors if I can do the same amount of work with 6. Even dumber to do at home where better antennas make more power less needed. It also makes you a better target to get busted. The quickest way to attract attention to yourself is to bother your neighbors and local amateur operators with dirty splatter box's!! If CB policed it's own and did not get stupid those of us not causing trouble would not have targets on our backs. If white trash was not acting like ignorant bigots spewing foul language, using noise toys and having one way conversations on alligator stations people would not have left in such huge number's. going to be on in a given area. The fact that so many amp builders can not even get 1 year out of an amp with out it failing tells me what I need to know! Everyone I know with a modern amp has issues they all need to be repaired regularly. So either the parts are junk or the design is junk or both are junk! Heck most people can not even get 3-6 months of daily use from an amp with out it failing. Even old TS amps last longer than that when not over driven! So I find the idea of being called a newb quite a compliment. Any ignorance I have is not because I am lazy or not willing to seek out the truth! Math and Science are not my enemy they are my friend! The truth is the truth and it does not matter where it is found their is only one truth! I work hard for my money and since I was 12 years old I have had my own official job and been paying taxes on my money! I got my own job washing dishes at 12 years old no one else got me that job. I had to get permission from school to work. I am getting ready to go off to college and I will be working all the way through. I can not afford to be stupid or to waste my money foolishly. The more I learn the more I can an do for myself and the less I have to pay other's to do for me. I have to work on my truck myself and I hunt and fish so I can afford to eat well and so my family eats well! Being poor sucks but God gave me a decent mind and the ability to read and write and seek out the truth! My Library card did not cost me a dime the ARRL handbook I first checked out had not been checked out in 15 years. I know what it is to be poor and to have to make do! Knowledge is my friend. I will not chose ignorance just to be cool or fit in! I just bought a single transistor MRF 454 thermally controlled true class AB1 biased amp. On AM it will put out 180-200 watts RMS with a 6 watts rms dead key for the drive. Do let me know when you guys have something that clean, powerful, efficient and stabile !!! A lot of 2 transistor amps can not put out 200 watts rms with a 5-6 watt dead key! That is with 14.2 volts as well not something stupid like 21 volts. I wish I could take credit for designing it but that would be a lie! I am glad I was smart enough to buy it when I saw it though!!! It is continuously protected against reverse polarity, thermal over load and high swr. It does not have any protection though against stupid! The really great thing though is that if I wanted to run this at home I can run a radio and this amp from a single well made 23 amp switching power supply. with 3 watts in I dead key 75 rms and swinging to 12 watts gives me 258 watts rms on AM. On SSB 12 watts PEP in gives 348 watts out. My car when running is more like 15.5 volts so my power output is a bit better in the car. If I was a no code I would want a broad band amp that would cover down to 24Mhz for 12m band and up a bit past 28Mhz and maybe more for 6m etc.... this amp only does 26-28Mhz efficiently because it is a tuned input design. It would need to have multiple tuning circuits to operate this efficiently beyond it's designed 26Mhz-28Mhz range. Either people where not paying attention or they did not understand what they heard. This is not a broad bandwidth transformer coupled amplifier that is why it is so efficient and get's so much power from a single transistor. If you have ever seen a tube amp where you need to select the right band for the radio you are operating you get the idea. In this case the input and output of this transistor amp is tightly tuned so it has a narrow band width. With a transistor amplifier what you do to one side has to be replicated on the other so what you do on input ideally needs to matched on the output side. When you go making a transistor amp broad band on the input and output you really need to add a lot of filtering to make it clean on the output side if you want to avoid having a splatter box and a box with a lot of power being at odd phase angles and such. You almost never see this sort of filtering on anything made for the illegal CB market. When you go with a narrow band width a lot of that can be avoided if the design is clean. A Bird meter is not immune to power at odd phase angles which is why you see such a HUGE increase in "Peak" power on dirty designs. When you see huge increases between rms and PEP that is a good indicator of a splatter box! That is also why PEP power increases do not account for much increase in range, S-Units on the receive end or increases in intelligibility.