LDMOS HF linear UI
1:26
10 ай бұрын
How to solder LDMOS to copper.
4:23
2 жыл бұрын
Bird view OH8LQ QTH
1:46
3 жыл бұрын
Screw pile
0:14
4 жыл бұрын
Antenna works after storm OH8LQ
1:04
Masts in winter 2018 OH8LQ
2:51
5 жыл бұрын
Antenna works at OH8LQ 2018 movie
21:57
plasma cutting round plate
1:50
6 жыл бұрын
OH8WW tower installation PART II
13:20
OH8WW tower installation PART I
4:01
Tower works OH8LQ
4:21
6 жыл бұрын
BF20 CNC Milling call sign plate
1:34
Ice fishing with Lowrance hook4
1:50
cnc homing test
1:23
6 жыл бұрын
BF20 Vario CNC first test
1:32
6 жыл бұрын
Ice dropping by drone PART II
0:52
6 жыл бұрын
Ice dropping by drone PART I
4:30
6 жыл бұрын
HF Autotune Linear amplifier OH8LQ
3:03
Plasma cutting table and THC
2:51
7 жыл бұрын
Proma Compact THC on plasma cutter
0:51
BLF188 LDMOS linear amplifier OH8LQ
0:51
80m yagi OH8LQ
2:09
8 жыл бұрын
OH8LQ QTH
2:58
8 жыл бұрын
blf188xr HF linear SSPA LDMOS
0:30
9 жыл бұрын
Пікірлер
@jariojala9816
@jariojala9816 10 күн бұрын
www.oh8lq.com/index.php/3-kw-ldmos-linear-amplifier
@ivanlubashev1101
@ivanlubashev1101 4 ай бұрын
Hello! Please tell me the characteristics of your mast, the side of the triangle, which pipes you use diameters and thicknesses. and the main question is, what thickness of metal was cut out of the pivoting ring for fastening the guy rods and sliding along the bearings? What is the diameter of the bearing pin on this node? I made a mast 30 meters high, triangular, the side of the triangle is 514 mm, the bearing pipe is 57 mm, the wall thickness is 3 mm, the struts are crossbars made of rebar 16mm and 12 mm, sections of 3 meters, flanged connections, (the video of this mast is on KZbin in my profile) I have thoughts of making a rotating mast. sincerely Ivan,de RA6AEW
@mathiasmaidana3713
@mathiasmaidana3713 4 ай бұрын
Hello my friend, I have some questions. From what I see it looks like thermal paste what you use for soldering or is it silver? Or a combination of both. It seems very responsive and how about the thermal transfer? Does it work well for you until today or did you change your work method? Is the last welded still welded and working? How deep is the central cnc to sink the ldmos? I'm about to start a similar project and what I have the most doubts about is what to use to solder the transistor to the copper with a good thermal coefficient. I will be grateful for your instructions
@jariojala9816
@jariojala9816 4 ай бұрын
yes it works well. I have use soldering paste Sn96,5Ag3Cu0.5. Central CNC is just so deep as 1.6 mm PCB needs set legs to surface (0.5 mm) Thermal transfer is very good to copper...
@mathiasmaidana3713
@mathiasmaidana3713 4 ай бұрын
@@jariojala9816 thanks my friend, Note that it preheats the general heat until the paste is melted on the other iron, then it lets the copper reach the temperature and once the fusion is achieved, it is quickly removed. I believe it is to avoid damaging the transistor. Also, as can be seen, it cools naturally to room temperature, which I believe is to avoid damaging the solder. any advice is welcome
@jariojala9816
@jariojala9816 4 ай бұрын
@@mathiasmaidana3713 Look datasheet there are temperature profile for reflow soldering, times and temperatures!
@RAJESHCHANDWANI
@RAJESHCHANDWANI Жыл бұрын
Antenna Farm and Radio Shacks - All in Jungle - Heaven for Hams
@AvocaSingleTrack
@AvocaSingleTrack Жыл бұрын
When the ice comes to upstate NY , the antennas become encased in one inch thick ice . No blowing snow off with a drone
@rustylimbo
@rustylimbo Жыл бұрын
HI, I am confused. Are you sure the word "SOLDER" is the correct Term? Am I seeing that you are using Heatsink compound and then placing the LDMOS in it, then heating and letting it all settle into the Heatsink compound?
@jariojala9816
@jariojala9816 Жыл бұрын
HI, I am sure, becauce compuond is tin (sn) paste. its used solder SMD components to printed board ;)
@Pueblo32
@Pueblo32 Жыл бұрын
Wow ! Awesome !
@ЕвгенийЗаховаев-б1д
@ЕвгенийЗаховаев-б1д Жыл бұрын
small antenna,bro. i have 5el yagi 160m band
@f1dxp16
@f1dxp16 Жыл бұрын
fantastic beam
@628anton3
@628anton3 2 жыл бұрын
Hi love that amp were did you get it from
@chuckyzzz
@chuckyzzz 3 жыл бұрын
Nice.
@glenroth2696
@glenroth2696 3 жыл бұрын
Hi There, what dimension pulleys and lead screws did you use. I am thinking of doing the same thing. look forward to your reply. Thanks Glen
@3DJunkie
@3DJunkie 4 жыл бұрын
great work Jari
@starsaregoneforever
@starsaregoneforever 4 жыл бұрын
Awesome! 73
@AmateurRedneckWorkshop
@AmateurRedneckWorkshop 4 жыл бұрын
What value is in your Proma "speed" setting and how did you determine what it should be?
@AmateurRedneckWorkshop
@AmateurRedneckWorkshop 4 жыл бұрын
What value is in your Proma "speed" setting and how did you determine what it should be?
@AmateurRedneckWorkshop
@AmateurRedneckWorkshop 4 жыл бұрын
What value is in your Proma "speed" setting and how did you determine what it should be?
@AmateurRedneckWorkshop
@AmateurRedneckWorkshop 4 жыл бұрын
What value is in your Proma "speed" setting and how did you determine what it should be?
@vladadamovrt7b496
@vladadamovrt7b496 5 жыл бұрын
Достойно!
@69GEHM
@69GEHM 5 жыл бұрын
Fantastic, very good, tower and antennas...
@toolstimber5953
@toolstimber5953 5 жыл бұрын
Komeat mastot. 30+ m?
@jariojala9816
@jariojala9816 5 жыл бұрын
3 x42m + 30 m
@ramirorcarvalho
@ramirorcarvalho 5 жыл бұрын
is homebrew or factored ?
@jariojala9816
@jariojala9816 5 жыл бұрын
All my antennas and towers are home brewed...
@ramirorcarvalho
@ramirorcarvalho 5 жыл бұрын
@@jariojala9816 Nice jobs! 73
@13HN870
@13HN870 4 жыл бұрын
Thats the Hamspirit
@theboogeyman826
@theboogeyman826 Жыл бұрын
Is the tower on a hinge base?
@Thejohnnyoshow
@Thejohnnyoshow 5 жыл бұрын
Hello from newton iowa, i just made a qso with you on the ft8 contest today. 4300 miles :-)
@vu3mes
@vu3mes 6 жыл бұрын
Is this homebrewed?
@jariojala9816
@jariojala9816 6 жыл бұрын
yes
@fufutsi6560
@fufutsi6560 6 жыл бұрын
K
@fufutsi6560
@fufutsi6560 6 жыл бұрын
Pls
@fufutsi6560
@fufutsi6560 6 жыл бұрын
What the fuck is this pig?
@yaesuicomkenwood
@yaesuicomkenwood 7 жыл бұрын
wow
@baruchzilbershatz557
@baruchzilbershatz557 8 жыл бұрын
looks great!
@KF8OD1
@KF8OD1 8 жыл бұрын
Nice amp!
@tunercars3
@tunercars3 8 жыл бұрын
how can i get one
@ta5fa
@ta5fa 8 жыл бұрын
Hi Your desing is beatiuful please detail
@jariojala9816
@jariojala9816 8 жыл бұрын
Yes, its still working. just upload new video...
@KF8OD1
@KF8OD1 8 жыл бұрын
Nice job!
@arravaz
@arravaz 8 жыл бұрын
Nice, and what about following tests? is it still working?