Ignore this, I only just saw your reply in a different thread TT

Hi John, How are you measuring that its "off" ? regards Tim

Hi Chris, See comments in line.... I completely agree. Many pulse devices just don't work well for the type of service we want from them. My interest stems from the fact that I've been gifted a few of

Hi all, Just wondering if anyone has used a QPD1029L in a big amp or experimented with one ? These things can produce in excess of 1kW on 1.2GHz so would potentially be a great candidate for an EME gr

Hi all, I've been looking at some devices from Qorvo and I see a lot of interesting information about GaN devices. Has anyone used GaN devices for PA's ? If so, please point at example complete schema

Hi all, I have a pair of NURAD 30cm Cassegrain dishes but I have no data sheet for them. They have a WR28 horn feed currently, and I'm lead to believe the f/D is 0.4. If anyone has information on them

Hi Eric, Yes I have that paper, its also in the files section of the EIP counters user group. Good description of what he did and photos of final product but no actual mechanical drawings of the build

Hi all, Browsing around eBay I see a number of Russian diodes like the 3A607A and 2A605B purporting to go up to 300GHz but I've not found any associated data sheets or app notes. The closest I've got

I have to concur. I see this issue with mine too. I switch a relay that switches others to bring the amp online and I've noted the "dance" on a number of occasions. regards Tim

Hi Steve, I have all the detail on that PA here... https://drive.google.com/drive/folders/14Akl9rHM8mNXOY-x4Z1imkzTY0uuDHt5?usp=sharing regards Tim

Thanks guys I've found Element14 in Australia has some generic stainless steel ones and I'm finding more now I know what to look for :) cheers Tim

OK... I was thinking about something more generic for when I make my own PCB's on my CNC mill. I'm sure there has to be basic stencils for common pin patterns, I've seen them for BGA, I'll just have t

I see lots of mentions of stencils, but I've not used them before. Mind you I've never needed to solder something quite that small/complex as yet so I've not looked into it. So... where do I get these

Wouldn't this range be better served by a Vivaldi ? cheers Tim

Hi Martin, Just an update... the diagram helped. We now have another ham on 1296 on our local area :-D thanks Tim

Hi Martin, Thanks for that, maybe that will help, I'll pass it on. regards Tim

Hi all, A local chap has a 23cm Kuhn 50w amp but no schematic or docs. Does anyone have those to share? The amp fails to proceed so it needs work hence the request :) thanks Tim

Hi Barry, Thanks for the note, it seems they used the DB{x}-633-{y} nomenclature for a number of things. Unfortunately mine doesn't match anything in this catalog. The waveguide dimension on the front

Hi all, Pocking around one of my junk boxes I happened across a couple of mixers I picked up on eBay I had completely forgotten about. One is an ADTEC M-10 20, the other is a Demornay/Bonardi DBW-633

Hi all, A brilliant achievement by Mike and Oliver, it just shows what you can do with these Silicon Radar chips :) cheers Tim -------- Forwarded Message -------- Subject: [The122GProject] A new world