Andy, The DMC ASK 'brick' 23GHz radios used this type of circuit for their 2nd IF on the receive side. Assume a transmit frequency of 23GHz, then the receive could be 23GHz + or - 1232MHz, then to get

Mike, I have some short lengths of a similar cable, but it's got a solid inner, the numbers on it are:- M17-060-RG 142 Not sure if that will help you. Also MS Distribution sell coax 'off the reel' and

Dear Hans, I cannot remember the original part numbers but NL2, NL8 & NL34 may be what we called them, the 2, 8 & 34 being the bit rate in Mb/s. There was very little information about these boxes bec

Dear Hans, I have worked on 3 different Nera radio links, the lower bit rate ones were 'branded' as Thorn in the UK. These were all 13GHz radios. 73, David.

I am looking to make an evanescent filter for 5.7GHz. I've looked on the web and found a lot of information, but... Is there an idiots guide to designing evanescent filters or a program that will do a

Mark, Thank you for the email you sent me, I've printed the drawing, I'll let the group know if I'm successful in having the slot antenna made. 73, David.

Dear All, I think I've found somebody who can cut 0.8mm slots in some 24GHz waveguide to make me a slot antenna. Problem is he's not a radio person, but he's a good engineer. Could anybody point me in

I was sent this link via another reflector. 73, David. Rogers has a nice microstrip calculator free at http://www.rogerscorp.com/acm/downloads/mwi/index.aspx 73, Tom

Dear Richard, I think there is a 4m/6m beam in my father in laws garage, it's still in it's plastic bag, never been assembled. If you want it I can collect it next time we're in Portsmouth, unless it'

I've tried to get into the Scatterpoint Yahoo site, but Yahoo says Scatterpoint does not exist. Can somebody post me a url please? The one from the latest scatterpoint does not work. Thank you, David.

Hi Roger, I also have a couple of Pasolink 50's and wonder what to do with them. What did you do to modify them? 73, David.

Dear All, I am looking for information about Mizar Microwave Synthesizers. I have looked on Google without sucess, unless I want to buy a microwave oven. The Mizar units I have have a code number 0186

Dear Paul, I can probably find you a filter, do you need waveguide or SMA? regards, David.

Dear Group, My copy of Backscatter arrived this morning. It's an excelent reference book, many thanks to all those who worked on it. 73, David.

John, I can view your website without problems, but I know George, G8AIM cannot. If it helps I use Firefox via NTL, George uses IE6 via Tiscali. 73, David.

Hi Graham, Thanks for the tip, I have successfully converted to Traditional. 73, David.

I've got a M57716 if that will do. Regards, David G6FEO.

Dear Rich, Thank you for the reply, I agree with you about the electrolytics, but this PSU has some surface mount resistors that monitor the mains current and control the Power Factor chip that are bu

Dear Group, Can anybody help me with a SMPS problem? I have two faulty Duvine DD666 48V 11A power supplies, both have failed in the same way, failure of surface mount components around the Texas Instr

Dear Peter, I'm not sure there is a good 'mail company' these days. I was due a delivery from Farnell on Friday via UPS, they left me an 'InfoNotice', but ignored my instructions. Next delivery due Mo