do you know if exist a PCB with a QN8007 to be easy buy and get? on ebay maybe? or aliexpres¿
@craftymulligar20 күн бұрын
A linear power supply with heavy transformer maybe
@craftymulligar20 күн бұрын
Phase lock loop. PLL for people that dont know VCO voltage control oscillator. What about stereo encoder. .? Guess its included.
@GBS104324 күн бұрын
I'M SHOWING THIS TO DUMBROWSKI
@andrewandrosow479725 күн бұрын
I experimented a bit with MW antennas. When I grounded one ray of antenna - efficiency decreases.The counterweights must be next to the ground - but they must not contacting with ground: you will have losses.
@alexnartey8867Ай бұрын
Hi please can I discuss this with you
@JBSATEАй бұрын
😮esse integrado ao lado do qn8027 e memoria ..
@jhonsiders6077Ай бұрын
You did a very good in depth reverse engineering job I’m a old ham guy that has gone rouge LOL yes the eBay ones stay away from. We have a Camel RF from a guy in California that imported the Warner style transmitters puts better parts in that are known to give problems and tests for hours on a dummy load before shipping them out we have the 150 watt rack unit been running it for close to 10 years with no problems and is clean FM audio and does not drift ! The site has disappeared that we got it from was about $1200.00 back then . Do a spot on antennas we have about the last dominator from Norwalk electronics before they went out of business . It’s. .94 wave .
@artpunk444Ай бұрын
Awesome, I'm really happy that you're back! I'm planning on building an autonomous rig using a tiny car fm transmitter that actually has the QN8007 and a small 7w amplifier.
@Snow209Ай бұрын
Yoooo welcome back!
@downtowndickАй бұрын
Love your videos. Please make more.
@MatthewSuffidyАй бұрын
Is it ok to just handle a 200 Watt RF transmitter (like your health)? You mean like those parts are from cellular base stations?
@GREEN-tc7xjАй бұрын
这种发射机都是卖假药的在用
@zacki5663Ай бұрын
regarding posting videos - don't sweat it pal. just remember, for every lifelong passion someone has, there was a small moment something caught their eye and they never looked away. it's hard to comprehend, but even someone as small as a little video here and there could profoundly impact someone.
@MELERIXАй бұрын
glad to see you are back! please continue making videos about this FM transmitters and related stuff.
@zeprooАй бұрын
FINALLY BACK !!! ive been waiting for ages !!!! Dont leave us thslong.Can you test a PCS-Electronics SE version transmitter ?
@JoloNavarroАй бұрын
Glad to see u back!!!
@timmack2415Ай бұрын
Glad to see you back. Next time you're gone that long, I at least expect a postcard. Interesting video, appreciate it
@ericpilboue3276Ай бұрын
Hello, back in the 80,when the socialist f. Miterrand free the fm band we used MRF 317 for 100w amp. We couple two 100w with *ceramic microstrip couplers " too i was young but i remember these transistor produce sound during tuning the amp.
@zeljkoadzic1692Ай бұрын
ATC100B ceramic capacitance, the use rd15 because heave to much used ones in bages :)
@hazzaaalayoubi7617Ай бұрын
Hello sir, This is really a great video. Thank you
@dktr2Ай бұрын
Maby the BLF if overdriven and makes this garbage on spectrum.
@dougtaylor7724Ай бұрын
Couldn’t believe it when I saw your name in the video title. Welcome back! Your material is always interesting and well presented. Thanks for posting!
@nikolmoneva111Ай бұрын
In two days I wanted to order the GD-2015S that you showed in the video, I thought it was good but what issues apart from the low power did you have with it? Is your unit defective or are all of them shipped this way? Should I order it or no?
@Chris-ji8jwАй бұрын
Hey, great to see you back!! ( : Glad you're still pursuing this stuff! Thanks for sharing.
@MrVinampАй бұрын
What about the current draw?
@andrzejtomaszewski5357Ай бұрын
I haven't seen you for a long time. Regards
@allanjaypalomique7609Ай бұрын
Dear master idol sir, do you have facebook page or fb account to messenger sir???
@sciencefollowerАй бұрын
What is the operating frequency range and driving poeer input. The circuit diagram if you have not shown it in the video please. Ap2kd.
@rjy8960Ай бұрын
Good to see another video, thanks! - Hope all is OK!
@MrBoingoАй бұрын
This BLF177 was produced in week 42 of 1999. So it's been here a while :)
@ikehsamuelifeanyi4925Ай бұрын
I am delighted you're back. Please can you include the indepth circuit diagram of the module ?
@MrDmjayАй бұрын
Would you like that as a PDF? Full parts list as well?
@ikehsamuelifeanyi4925Ай бұрын
@@MrDmjay Yes I like PDF too
@artpunk444Ай бұрын
He probably can't, simply because he bought it off Aliexpress... Not worth it anyway due to all the inband spurs.
@mattdalby1210Ай бұрын
Glad you’re back!
@krikunov79Ай бұрын
Today I bought a new version of this transmitter on Aliexpress and it has IC BH1414K. With delivery to Russia it cost less than $100 in rubles. I will wait impatiently to receive it.
@gonxa10002 ай бұрын
Very interesting Fm transmitters presentation . What could be happen if i use one of this Qn8007 transmitter in texas...with about 30 w..can i have issue with Fcc?
@zeljkoadzic16922 ай бұрын
do you heave qn8007 exciter ? do you run RDS on it?
@zeljkoadzic16922 ай бұрын
Radio master is so overvalued and rumors is not good about clear signal..
@jerrykrinock2 ай бұрын
Thank you for the video. But I would like to have seen the 3rd harmonic (if any) also.
@vagelistopouzlis42353 ай бұрын
Yes but only Frequency response <=+/-1.5dB 100HZ~10KHZ.
@Inkmachine463 ай бұрын
What typebof antenna connector does that have? Is it tnc???
@allen_steel12363 ай бұрын
The reason that you're able to make that transmitter smaller than this, is it is not designed to test it to the levels that the FCC requires for commercial am transmitter. It may meet the specifications on your test bench. But is the components inside design and such a way that they can be operated 24 hours a day 7 days a week, with varying loading, and very incapacitants as the ground system drifts in relationship to your vertical. Also what kind of actual components do you have as far as when you're talking about 16 kilowatts Peak power how long will it do that much power pink. Most transmitters I've seen that someone is waiting to that high a pep level, will not truly operate at that level very long. Maybe an instantaneous peak. But it's not going to take an average peak. I've used one of these exact transmitters. And yes it will put out a kilowatt of carrier. And it will produce 2.5 times that add up to about $3,000 Watts peak. But only for instantaneous Peaks what it truly generate what you're claiming that it will
@allen_steel12363 ай бұрын
Good information. On medium wave and broadcast stuff, a little oversimplifying but you never know your audience. I think I have got a please hire someone to do a voiceover for you. Unless you equalize your voice seriously. It is painful to listen to on a handheld device. With my phone connected to my Bluetooth your voice came piercing through my speakers I'm sure it works great for am. But now I suggest please equal out some of that mid-range😮
@nsummy3 ай бұрын
Great video. The cussing made it even better. Usually these videos are so dry and boring, made it more exciting haha
@HenrikKallbacks3 ай бұрын
I have bought an ELE EL-15s in 7 W version and can verify that the near spectrum is very good! BUT can also tell you that second harmonic suppression is extremely bad! At full power at 88 MHz it is 22 dB down, at 1W -14 dB and at 0.3W (lowest power) it is only -9 dB. Second harmonic is thus fairly constant around 15-16 dBm (30-40 mW) regardless of output power, which is at least 50 db worse than permitted in the EU and cannot be used without an external LP filter. Another disappointment is the very strange AGC function on the AF input which cannot be switched off.
@ryantoomey6113 ай бұрын
One flaw I have discovered with many of these transmitters is the audio is very muddy due to the Pre-Emphasis being set incorrectly.
@barrygeary18904 ай бұрын
Thats very good it has pre emphasis for fm snd filtering so you dont need a 19inch rack this will do
@andrzejtomaszewski53575 ай бұрын
Hello buddy, I have such a transmitter. I have a question, where can I buy the display for this transmitter? It can also be together with PCB. Please reply