What's on your Workbench?

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47GHz Transverter

Postby VK5ZD » Tue May 31, 2016 4:12 pm

47GHz.jpg
47GHz Transverter

Simple arrangement using an I3OPW mixer.
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Iain Crawford - VK5ZD
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Re: What's on your Workbench?

Postby VK5KK » Thu Jun 02, 2016 1:18 am

TNX for the 47 GHz "QSO" this evening, working well!

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Re: What's on your Workbench?

Postby VK5TX » Thu Jun 02, 2016 3:15 pm

Where did you guys get the mixers?

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Re: What's on your Workbench?

Postby VK5KK » Thu Jun 02, 2016 7:21 pm

Hi Ben,

Just google "I3OPW" and go to the "47 GHz mixer", uses MA4E1318 Anti parallel diode usually -7dbm per sideband on 47 GHz output. Alternative if you like gluing diodes that are 0.6mm x 0.3mm to PCB's google 47 GHz & DL2AM ;-)

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Re: What's on your Workbench?

Postby VK5TX » Thu Jun 02, 2016 9:57 pm

Cool. I looked at his sit but it didnt look like he was selling anything. Looks like I am moving back so I need to get the gear working again.

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Re: What's on your Workbench?

Postby VK5KK » Thu Jun 02, 2016 9:59 pm

You will find a link somewhere on the website (in Italian) for his price list, else I can email it to you

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Re: What's on your Workbench?

Postby VK4UH » Sun Jun 05, 2016 11:48 am

Hand soldered smd construction slowly starting to improve

W6PQL latching coax relay driver controller
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Re: 47GHz Transverter

Postby VK5ZD » Sun Jun 05, 2016 2:56 pm

VK5ZD wrote:
47GHz.jpg

Simple arrangement using an I3OPW mixer.

First distance test successful - 32km contact with Dave, VK5KK.
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Re: What's on your Workbench?

Postby VK5KK » Mon Jun 06, 2016 12:02 pm

Very good signals on 47 GHz from Iain over 32 km, interestingly when a heavy rain band went between us nearly -20 db drop in signals but still readable!

20160605_140437.jpg


The two 47 GHz systems, BTW the system on the right is the 10 GHz EME system. 3 initials yesterday on 10 GHz JT4f EME (G3WDG, OK1KIR & OZ1LPR)

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Re: What's on your Workbench?

Postby VK3MEG » Mon Jun 06, 2016 3:03 pm

The two 47 GHz systems, BTW the system on the right is the 10 GHz EME system. 3 initials yesterday on 10 GHz JT4f EME (G3WDG, OK1KIR & OZ1LPR)


WOW David awesome work
cheers
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Re: What's on your Workbench?

Postby VK3ZAZ » Mon Jun 06, 2016 6:49 pm

Now this is a work bench/shop
Image
if you are up to it John Goodalls bench should produce some MFJunk all for auction this Sunday
AR7 AR88 BC348 BTM BC etc
To see what is there go to:

https://www.dropbox.com/sh/hgstbdq6w94eajm/AAAoEqVpj23zZqJkxWZQ8a5Ea?dl=0
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Re: What's on your Workbench?

Postby VK3ALB » Mon Jun 06, 2016 6:59 pm

VK3ZAZ wrote:Now this is a work bnech

if you are up to it John Goodalls bench should produce some MFJunk all for auction this Sunday
AR7 AR88 BC348 BTM BC etc
To see what is there go to:

https://www.dropbox.com/sh/hgstbdq6w94eajm/AAAoEqVpj23zZqJkxWZQ8a5Ea?dl=0


Where is there?
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Re: What's on your Workbench?

Postby VK3YE » Thu Jun 09, 2016 7:00 pm

VK3ALB wrote:Where is there?


Maybe one needs ESP to work it out? However if the seller is an amateur the ACMA database may give a clue - in VK2?
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Re: What's on your Workbench?

Postby VK5TX » Thu Jun 23, 2016 9:57 am

Image

Image

Just abit of plumbing. Plaining to make a penny feed on 10Ghz for 400mm dish
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Re: What's on your Workbench?

Postby VK5ZD » Thu Jun 23, 2016 1:43 pm

VK5TX wrote:Just abit of plumbing. Plaining to make a penny feed on 10Ghz for 400mm dish

Your workbench is clean, too clean..... :shock:

PS: A 20c piece works for the feed.
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Re: What's on your Workbench?

Postby VK5TX » Thu Jun 23, 2016 2:40 pm

Got any ideas / photos of how to attach the feed to these dishes
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Re: What's on your Workbench?

Postby VK3YE » Fri Jun 24, 2016 8:14 pm

The effect of adding a 1 transistor Q-multiplier to a crystal set.

https://www.youtube.com/watch?v=4ix5gNrJy2E

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Re: What's on your Workbench?

Postby VK5TX » Sat Jun 25, 2016 9:04 pm

Image

Tuning up the PA stage in my back pack VK3XDK 23cm transverter
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Re: What's on your Workbench?

Postby VK5ZD » Sun Jun 26, 2016 2:19 am

Gathering parts for a 122GHz transverter.

20160625_175551.jpg
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Re: What's on your Workbench?

Postby VK5KK » Sun Jun 26, 2016 2:37 am

The other end of the spectrum ... I finally found a morse key small enough to fit in the portable rucksack

20160625_182841.jpg
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