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2.4m dish & 40ft clark pump up mast
The dish is no spoken for.
The dish is no spoken for.
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By
Roger Ray
· #61361
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2.4m dish & 40ft clark pump up mast
Do to needing the space. A General Dynamics 1241 2.4m dish - dismantled, as removed from Dubai, described in Scatterpoint. Plus a 40ft clark mast must go. Both in Brentwood Essex. Please email me dire
Do to needing the space. A General Dynamics 1241 2.4m dish - dismantled, as removed from Dubai, described in Scatterpoint. Plus a 40ft clark mast must go. Both in Brentwood Essex. Please email me dire
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By
Roger Ray
· #61359
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Projects in Lockdown
I am putting together the latest Scatterpoint. It would be nice to include details of any projects, or simple ‘this month I have been .....’ Pictures would be nice. As usual activity ( on air) should
I am putting together the latest Scatterpoint. It would be nice to include details of any projects, or simple ‘this month I have been .....’ Pictures would be nice. As usual activity ( on air) should
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By
Roger Ray
· #61118
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6Cm?
The 5.76 Ceragon module mods were in Scatterpoint and on my web page www.rfdesign.co.uk/microwave I may still have a module around somewhere... Roger G8CUB
The 5.76 Ceragon module mods were in Scatterpoint and on my web page www.rfdesign.co.uk/microwave I may still have a module around somewhere... Roger G8CUB
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By
Roger Ray
· #61018
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VAT ... it looks like it's going to be difficult.
Noel, If you were looking at the Philips 47G mixer, they are nothing special, and have a hpf on the IF port. Go for a wr-28 one. There was one with pre-amp quite reasonable. Roger
Noel, If you were looking at the Philips 47G mixer, they are nothing special, and have a hpf on the IF port. Go for a wr-28 one. There was one with pre-amp quite reasonable. Roger
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Roger Ray
· #60295
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C-Band LNB on 3.4GHz?
I measured 0.85dB nf on one where I replaced the wg feed with an sma, though that was 10 years ago! www.rfdesign.co.uk/microwave Roger G8CUB
I measured 0.85dB nf on one where I replaced the wg feed with an sma, though that was 10 years ago! www.rfdesign.co.uk/microwave Roger G8CUB
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By
Roger Ray
· #59813
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47 GHz
Mark, I think it is x4 only. But it is possible to hit it harder at 11..G . I think 50mW may be possible. Roger
Mark, I think it is x4 only. But it is possible to hit it harder at 11..G . I think 50mW may be possible. Roger
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By
Roger Ray
· #59346
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47 GHz
Sorry forgot to mention high pass filters. I don’t think you will find anything in wr-28. I did find some wr-28 style flange, but wr-22 band pass filters centred on 50GHz a while ago. But not any late
Sorry forgot to mention high pass filters. I don’t think you will find anything in wr-28. I did find some wr-28 style flange, but wr-22 band pass filters centred on 50GHz a while ago. But not any late
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By
Roger Ray
· #59343
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47 GHz
Hi John, The waveguide switch can clearly be seen, in my article. ‘simple 47GHz transverter’. It is on my website. www.rfdesign.co.uk/microwave I see wr-28 mixer on epay for $61. Looks like it has a p
Hi John, The waveguide switch can clearly be seen, in my article. ‘simple 47GHz transverter’. It is on my website. www.rfdesign.co.uk/microwave I see wr-28 mixer on epay for $61. Looks like it has a p
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By
Roger Ray
· #59342
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47 GHz
Hi Barry, I need to draw it really. However if you look down on the switch, with the antenna port at 12.00. The mixer rf port is on the 3.00 wg switch port. The wg 6.00 port connects to waveguide goin
Hi Barry, I need to draw it really. However if you look down on the switch, with the antenna port at 12.00. The mixer rf port is on the 3.00 wg switch port. The wg 6.00 port connects to waveguide goin
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By
Roger Ray
· #59335
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47GHz
Noel, if you have the wg switch, you just need a x4 multiplier and mixer. The NEC Pasolink multipliers give around 15mW. I use one in my system, and one in the loan unit. In both I use a wr-28 mixer.
Noel, if you have the wg switch, you just need a x4 multiplier and mixer. The NEC Pasolink multipliers give around 15mW. I use one in my system, and one in the loan unit. In both I use a wr-28 mixer.
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By
Roger Ray
· #59331
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Activity List for the UK Microwave Group 24/47/76GHz Contests - Sunday 18th October
Likely contest activity as follows: callsign: G8CUB, G8CUB/P locator: JO01DP90, plus others in Essex (JO01JR81, JO01DO31 etc) bands: 24GHz 2/0.6W, 47GHz 50mW, (122GHz 10mW) times: various after 10.00
Likely contest activity as follows: callsign: G8CUB, G8CUB/P locator: JO01DP90, plus others in Essex (JO01JR81, JO01DO31 etc) bands: 24GHz 2/0.6W, 47GHz 50mW, (122GHz 10mW) times: various after 10.00
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By
Roger Ray
· #58878
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mm-wave Contest Sunday 13th September - Activity List
Activity for mm contest on Sunday. All with possibility of change. Priority is higher mm bands. Callsign: G8CUB/P Locator: Hackpen IO91CL35 first hour. Coombe Gibbett IO91GI25. plus others Bands: 24,
Activity for mm contest on Sunday. All with possibility of change. Priority is higher mm bands. Callsign: G8CUB/P Locator: Hackpen IO91CL35 first hour. Coombe Gibbett IO91GI25. plus others Bands: 24,
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By
Roger Ray
· #58328
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Switching a 24GHz transverter ?
Neil, I have got one of the Relcomm wr-28 switches, that you might like to consider the operation of. It may be easier to manufacture a wr-42 version. Although the wr-28 works fine on 24. You can have
Neil, I have got one of the Relcomm wr-28 switches, that you might like to consider the operation of. It may be easier to manufacture a wr-42 version. Although the wr-28 works fine on 24. You can have
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By
Roger Ray
· #57786
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OXCO Detail
Paul, I use these, and run on a regulated 10V supply. The take 400mA initially but warm up quickly. The ref voltage out is 5V. Nice low phase noise, OK for 122. Roger G8CUB
Paul, I use these, and run on a regulated 10V supply. The take 400mA initially but warm up quickly. The ref voltage out is 5V. Nice low phase noise, OK for 122. Roger G8CUB
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By
Roger Ray
· #57432
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[UKuG-Committee] 24 and 76GHz loan kit plus other stuff
I have the two 122 boards here. So let me know when you want them Neil. I have a 47G loan system. It is just a mixer, but a fundamental mixer so works reasonably. I am happy for it to be loaned out. T
I have the two 122 boards here. So let me know when you want them Neil. I have a 47G loan system. It is just a mixer, but a fundamental mixer so works reasonably. I am happy for it to be loaned out. T
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Roger Ray
· #57410
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Photo Notifications
If anyone has a WR-75 wg17 attenuator >5W I am looking for one to measure harmonics of a pa more accurately. Roger G8CUB
If anyone has a WR-75 wg17 attenuator >5W I am looking for one to measure harmonics of a pa more accurately. Roger G8CUB
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By
Roger Ray
· #57357
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Activity List for the UK Microwave Group 24/47/76GHz Contests - Sunday 19th July
Planned operation as follows: Callsign: G8CUB/P Locator: Hackpen IO91CL35 (09.00 - 12.30z) Coombe Gibbet IO91GI25 (13.30 on) Bands: 24G 1W / 47G 50mW 30cm dish. 76G 50mW 30cm dish (122G 150mm horn) Ti
Planned operation as follows: Callsign: G8CUB/P Locator: Hackpen IO91CL35 (09.00 - 12.30z) Coombe Gibbet IO91GI25 (13.30 on) Bands: 24G 1W / 47G 50mW 30cm dish. 76G 50mW 30cm dish (122G 150mm horn) Ti
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By
Roger Ray
· #57086
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122 GHz boards
David, I generally agree with all your points. However as Amateurs, we need to be a lot more aware of where are spurious / unwanted emissions lie. In the past there has been very little thought of rad
David, I generally agree with all your points. However as Amateurs, we need to be a lot more aware of where are spurious / unwanted emissions lie. In the past there has been very little thought of rad
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By
Roger Ray
· #56449
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122 GHz boards
Paul, I disagree with you. Existing equipment is on 122.400 in UK. The frequency is works well when you want to generate markers. 12.240 from an Elcom, or 13.600 x 9 from a low cost synth. It also all
Paul, I disagree with you. Existing equipment is on 122.400 in UK. The frequency is works well when you want to generate markers. 12.240 from an Elcom, or 13.600 x 9 from a low cost synth. It also all
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By
Roger Ray
· #56442
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