Search found 6 matches

by VE2OLM
Mon Mar 11, 2019 7:00 am
Forum: 1296, Microwaves and Opto
Topic: SM3437 3.4 GHz amplifier everything you what to know
Replies: 1
Views: 292

SM3437 3.4 GHz amplifier everything you what to know

Hi i try to collect all information to a single place so here the datasheet ( thank to zl2bkc ) https://zl2bkc.files.wordpress.com/2013/01/sm3437.pdf input is 0dbm and not what to buy a attenuator for put on my kuhne MKU 34 G3 that drive 400mw so i mod the first gain stage remove MMIC and remplace b...
by VE2OLM
Mon Sep 10, 2018 9:55 am
Forum: General Discussion
Topic: What's on your Workbench?
Replies: 603
Views: 58355

Re: What's on your Workbench?

Building some 2.4 and 5.7 transverter from KUHNE ;-)
by VE2OLM
Sat Jan 24, 2015 10:00 am
Forum: 144 & 432 MHz
Topic: VHF 300W linear project 50v LDMOS
Replies: 4
Views: 1142

Re: VHF 300W linear project 50v LDMOS

Hi the 4D display was bit expensive but come whit free development tool and it own custom cpu that very fast for graphic and may program whit drag and drop item very easy to use i have first try a STM32 module whit TFT from china ,but come whit example code in chiness whit tool and lib from suspect ...
by VE2OLM
Sat Jan 24, 2015 5:10 am
Forum: 144 & 432 MHz
Topic: VHF 300W linear project 50v LDMOS
Replies: 4
Views: 1142

Re: VHF 300W linear project 50v LDMOS

that first version of the panel meter ... not yet got time to make it more complex ..

board i use have I2C , Serial and 4 x 10 bit ADC build in and whit a adapter for hook a ardunino board
http://www.4dsystems.com.au/product/uLCD_35DT/

have fun !

VE2OLM
by VE2OLM
Sat Jan 24, 2015 5:02 am
Forum: 144 & 432 MHz
Topic: VHF 300W linear project 50v LDMOS
Replies: 4
Views: 1142

VHF 300W linear project 50v LDMOS

Hi i just complete my linear project ,that a prototype and test platform for my next one :mrgreen: so i start whit a ebay pallet that come from a FM broadcast seller that make a 144 version the hook to it W6PLQ control board , low pass filter for my meter i have take some luxury i take a 4d system i...
by VE2OLM
Mon Jan 05, 2015 8:02 am
Forum: 1296, Microwaves and Opto
Topic: (project) handle multiple transverter via web interface
Replies: 1
Views: 355

(project) handle multiple transverter via web interface

Hi all think that many here was like me and have to handle multiple transvetrter problem when switch of band by need to swap PLL / IF and PLL reference .. during holiday i got nice idea and put it into practice ,take a custom relay board tie to a raspberry-PI for web interface ther day anyone have t...