Has anyone here tried making their own amplifiers for these bands yet? A TWT amp sounds like it'd be fun to make I know sage has some on their catalogue, but it doesn't sound fun or cheap

Take this with a grain of alt (sample size = 1). I tested a TRA120_045 and found that the VCO on that particular chip would tune to 134.74 GHz at the maximum specified tuning voltage (4.7v), with the

I have surplus parts sufficient for ~5 kits of parts for the part A and part B FM modifications to the first production run of PCB. I will be at RAL on Sunday 19th with the parts, small bags, a pair o

I've reluctantly accepted that my reducing mobility (not the price of petrol!) means I won't be able to put these to good use. I have built two identical systems from the first batch of VK boards, eac

Hi all, Andrew has made a video demonstrating the difference between the straight IF and the IF via a quadrature combiner on the IQ outputs. His video also goes onto explain why we might do this. You

Hi all, I'm collecting interests for version 2 of the board and will log interest here... http://tiny.cc/134GHz Andrew has taken some of the suggestions on board and will make changes to the RS232 to

Many of you have seen the images of the black hole in our galaxy. https://apod.nasa.gov/apod/ap220513.html The Event Horizon Telescope is a collaboration of several big radio telescopes. https://event

Hi, In getting ready for the next run, here is an IF radio that might be good. I have an Alinco DJ-x11 wideband receiver. It is very nice but relatively expensive. At nearly 10 times cheaper is the Ba

Hi all 122ghz enthusiast I looking for any interested amateurs in Brisbane Queensland for any millimeter wave contacts, (24,47,76,122) getting ready for the colder days. Or if you in progress of build

Hi all, Second run interest is now north of 140 units so I've has some quotes returned from the manufacturers. The price of the horn & feed/coupler remains unchanged. The cost of the assembled & teste

Hi all, After a few comments on my initial video I've performed a few more tests of the power output of the transverter using different configurations each time. I've even used an HP11970K (18-26GHz)

Hi all, I've updated the sheet with your requirements. http://tiny.cc/134GHz Please check it to make sure I've got it right and advise me of any updates. thanks Tim -- VK2XAX : QF56if : ITU59 : CQ30 :

Please put me in for two completed boards and two feeds for 134 GHz. Giovanni I1JF

Hi All , Step by step ... Now 59.2 Km on 122 GHz : https://youtu.be/VEQVGa15VBw Next try ??? Will see ... Best 73 Xtian / F1VL

Hi All, I was recently asked to measure the output power of a transverter to establish some sort of baseline. While the result is nowhere near what Silicon Radar claim the output actually is, at least

Hi all, I've just uploaded the latest schematic, from Andrew, for the 134GHz unit, to the wiki... https://groups.io/g/The122GProject/wiki Areas updated are : the Serial port, IQ RF switch on the IF ou

The wiki page _Sidebar has been updated by Tim - VK2XAX <VK2XAX@...>. Compare Revisions

The following files and folders have been updated in the Files area of the The122GProject@groups.io group. /122-134GHzTransverter/122G_134G_PCB_006_Rev_1_10.pdf By: Tim - VK2XAX <VK2XAX@...>

I thought I would share several minor modifications I made to the 122G_003_20F3006 software. They are: 1) Add an ability to signal when battery voltage goes low when using LiFePO4 batteries (the knee

Tim - Please enter me for: ONE Made Board, ONE Chaparral feed & coupler assy and, ONE Conical horn with integrated coupler Thanks and 73, Wayne Yoshida KH6WZ On Sun, Mar 20, 2022 at 11:18 PM Tim - VK2