RF Man Demos New 2 Meter 1000 Watt LDMOS Board

  Рет қаралды 9,484

RF Man Channel

RF Man Channel

Күн бұрын

Пікірлер: 32
@iwantrendy
@iwantrendy Жыл бұрын
i see there is an error in the calculation 20.6 x 0,70 =18.1 isn't the amount 14.42.. and where can you get a length of 12cm for 2 meters??
@JT-py9lv
@JT-py9lv Жыл бұрын
🤣Did you catch that ? @ 6:55 We use the infamous *Flux Capacitor* - From "Back to the Future" - HA HA HA 😂🤣
@KG4JYS
@KG4JYS 3 жыл бұрын
Ordered one, can you show the input and output waveforms on a scope?
@Leopoldino2020
@Leopoldino2020 9 ай бұрын
Beautiful job!!! The BLF188XR costs only $80-100 in Russia. 73 from RA3ASA Leo!!!
@stevenbirch
@stevenbirch 5 ай бұрын
What type of PCB material is this? FR4 or Rogers, PTFE etc ? I kinda assumed that ordinary FR4 was not so good at VHF
@jonathanmullaney1285
@jonathanmullaney1285 3 жыл бұрын
Really liked this video, but could you explain the impedance matching using the transmission line transformers? I understand the 1/4 wavelength tlt formula (sqrt(Zo*Zin)), but how were you able to use a transmission less than 1/4 wavelength? Thank you!
@rfmanchannel6915
@rfmanchannel6915 3 жыл бұрын
The total length of coax cable for this TLT is just under 1/8 wavelength. This cause a phase shift in the standing waves in the transmission line. The phase shift is approximately 90 degrees which causes the 2 standing waves to cancel each other out. When these waves are cancelled Zo = Zl. Regards
@ericlessard4406
@ericlessard4406 Жыл бұрын
Nicely done!!
@EA1DDO
@EA1DDO Жыл бұрын
Is the LDMOS soldered to copper base? Or just bolted?
@F1RVC
@F1RVC Жыл бұрын
Hi, can you shar the page you show on the video. It is hard to read because too mutch move .... :) Please sent a link to download this doc. thank you.
@delestebroacast8496
@delestebroacast8496 9 ай бұрын
Hello, good day, how much is the donation to have the exell?
@kb9cjr68
@kb9cjr68 3 жыл бұрын
55volts @ 20amps = 1100watts input power and 1000watts output power, that's over 90% eff. wow I'm a bit skeptical. I've seen similar designs in the range of 66 - 75% eff. I don't see this pallet listed on your website yet, I'll check back. I'm interested depending on price even if the eff. turns out to be more typical to others. Thanks for the video
@rfmanchannel6915
@rfmanchannel6915 3 жыл бұрын
I believe my current meter was reading a little low. I will have the 2 M board posted on my site next week. The price is $519 with the copper heat spreader, plus $16.95 shipping. Thanks!
@MauofMiami
@MauofMiami 3 жыл бұрын
Actually that of the most device is a 1200 watt device and his boards are designed to be 85% efficient
@W1RMD
@W1RMD Жыл бұрын
Should have band pass filtering to avoid spurious emissions and interference with other services. It seems that none of these LDMOS amps designs focus on that. Too much emphasis on wattage and not on clean signals with these Ebay amps. People should be aware of this.
@yyyiiii9779
@yyyiiii9779 3 жыл бұрын
power supply how many amps؟
@TA4A-32
@TA4A-32 3 жыл бұрын
What you use Thermal paste ? or solder ldmos in copper plate ?
@rfmanchannel6915
@rfmanchannel6915 3 жыл бұрын
I use a nonconductive compound with a rating of 3.3 W/mK or higher.
@Lowered_Gadh
@Lowered_Gadh 2 жыл бұрын
hello sir do you ship to Philippines
@carlos735
@carlos735 2 жыл бұрын
What is the max power of that Transistor
@Dreamlgider
@Dreamlgider 2 жыл бұрын
1400w
@a.v.stechs9398
@a.v.stechs9398 Жыл бұрын
Dear sir I have 500watt mrf 300an vhf amp But I confuse about to bias setting Ple suggest how to set bias ,I am new in this field if you possible then ple make a video
@carloslaimgruber8149
@carloslaimgruber8149 3 жыл бұрын
Thank you so much!
@delestebroacast8496
@delestebroacast8496 3 жыл бұрын
sir pleas can you share this excel?
@rfmanchannel6915
@rfmanchannel6915 3 жыл бұрын
Done
@delestebroacast8496
@delestebroacast8496 2 жыл бұрын
@@rfmanchannel6915 hello friend donate how many?' Thank you
@janvisser8452
@janvisser8452 3 жыл бұрын
Why doesn' t he buy a camera pod ? We get all shaky.
@rfmanchannel6915
@rfmanchannel6915 3 жыл бұрын
Sorry, It hard to record one handed.
@rfmanchannel6915
@rfmanchannel6915 3 жыл бұрын
I now have a tripod so you should see better quality videos!!
@jeroent3676
@jeroent3676 2 жыл бұрын
Feeling kinda dizzy due to all the quick camera movements. But still a nice video!
@reedreamer9518
@reedreamer9518 2 жыл бұрын
Notice he puts special circular motion on the camera to emphasize the areas he's talking about - just to keep things blurry ; )
RF Chokes - what are they and how are they used?
17:22
RF Man Channel
Рет қаралды 8 М.
New 65 Volt LDMOS RF Board (MRFX1K80H)
15:33
RF Man Channel
Рет қаралды 10 М.
Мясо вегана? 🧐 @Whatthefshow
01:01
История одного вокалиста
Рет қаралды 7 МЛН
RF Man Demos 6 Meter 1000 Watt LDMOS Board with IMD Measurement
14:48
RF Man Channel
Рет қаралды 2,5 М.
Analyzing Guanella Impedance Transformers
18:14
FesZ Electronics
Рет қаралды 5 М.
RF Power Amplifier Construction
30:24
Ron Taylor
Рет қаралды 64 М.
How to build an RF Sampler for Ham Radio and RF Applications
17:12
RF Man Channel
Рет қаралды 22 М.
TE Systems 1452G 350watts VHF Linear Amp
7:57
Clint Parreno
Рет қаралды 7 М.
RF Splitters & Combiners - How do they work?
31:50
RF Man Channel
Рет қаралды 17 М.