What's on your Workbench?

General discussion - When it doesn't fit anywhere else
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VK4EA
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Re: What's on your Workbench?

Post by VK4EA » Tue Apr 16, 2013 7:24 am

Where do I start?

1. 10 GHz home station, based on the Qualcom lambchop
2. 50mhz amplifier, larken panel in a box, relays, sequencer ready to mount up
3. 144 mhz, ditto
4. 2.4 metre dish mount and controller
5. 23cm septum feed
6. 23cm amplifier
7. Roof tripod for hf tri-band yagi and 11 element 2 metre yagi
8. Digital ATV transmitter

Wish I was retired and flush with funds :P
Cheers,
Peter
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VK4RF
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Re: What's on your Workbench?

Post by VK4RF » Tue Apr 16, 2013 8:39 am

Hmm That is something i need to start looking at as well Peter.
A Septum feed for 23cm as well as mounting setup for the 3.6mtr dish.

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Re: What's on your Workbench?

Post by VK2EM » Tue Apr 16, 2013 8:53 am

Many things... I think its called WIP (that's 'Work in Progress' for those new to the game!)
Tidy Workbench 1.JPG
WIP
... Including a 11808 LO for 24GHz, and a doubler for 5328MHz (5760-432).

Various other bits and pieces, including 14.4MHz modules for signal sources for ALL microwave bands!

It comes and goes, depending on the mood, and time availability...

73

Bruce VK2EM
73
Bruce VK2EM

VK4TIM
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Re: What's on your Workbench?

Post by VK4TIM » Tue Apr 16, 2013 9:02 am

1. 5.7 GHz transverter based on a DXR-700 ex-commercial digital microwave unit, whick will be modified for external 10 MHz reference input.
2. Mark 2 10 MHz GPSDO with VK4GHZ display for the shack, being built into a 2RU rack mount case that I picked up at a junk sale.
3. APRS unit, with tracker and GPS receiver all built inside a Simoco VHF commercial mobile radio.

Wouldn't mind one of those ex low band TV PAs to build into a 50 MHz high power linear...
Tim, VK4TIM.
QG62MM, Brisbane.

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Re: What's on your Workbench?

Post by VK4CDI » Tue Apr 16, 2013 10:39 am

Adam wins...hands down.....!!!!!

Phil VK4CDI

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Re: What's on your Workbench?

Post by VK3BJM » Tue Apr 16, 2013 10:44 am

VK4CDI wrote:Adam wins...hands down.....!!!!!

Phil VK4CDI
Not sure how... Both the bench and the bottle are far too uncontaminated by contents. :cry:

73,
Barry
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Re: What's on your Workbench?

Post by VK4TS » Tue Apr 16, 2013 10:51 am

yep - Adam is the winner - :D

SO2R controller , six pack and two radio band decoder for HF contesting

SO2R is the Yankee Clipper Contest Club unit, http://www.k1xm.org/SO2R/

Six Pack http://home.comcast.net/~kk1l/kk1l_2x6switch/

Two radio Band Decoder http://home.comcast.net/~kk1l/kk1l_2x6switch/
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Re: What's on your Workbench?

Post by VK2ZRH » Sat Apr 20, 2013 3:26 pm

Microwave weak sig gen project pic.jpg
Microwave weak-signal generator project - figuring out how to adapt an ex-commercial oscillator-multiplier chain. As it is, it starts with a 96.x MHz Xtal (at the right) and multiplies x16 to ~ 1540 MHz. Aim is to generate 10,368 MHz - 108x multiplication from 96 MHz, but the Xtal in there is too high to be able to pulled down in frequency. Have to get one for 96.000 MHz. To be battery-powered.

Note to Adam: my beer's bigger than your beer :lol:

73, Roger Harrison VK2ZRH

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Re: What's on your Workbench?

Post by VK3YE » Sat Apr 20, 2013 3:44 pm

To quote the late Julie Kentwell VK2XBR (from ABC TV - http://www.youtube.com/watch?v=C6Xif9hd2Ps ):

There are two types of shacks: those that are an absolute pigsty and those where nothing happens

Whereas Roger's table appears to break Kentwell's Law: ie evidence of tidiness with activity. How do you do it?

Compared with, for instance, below:
80 40m sound card radio.jpg
The black box uses 15 parts + a good soundcard to receive signals on 40 & 80m suprisingly well. All parts from Jaycar. No pre-set adjustments. Cost <$20.
Last edited by VK3YE on Sat Apr 20, 2013 4:02 pm, edited 1 time in total.
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Re: What's on your Workbench?

Post by VK2ZRH » Sat Apr 20, 2013 4:02 pm

Kentwell's Law still holds 8)

The pigsty is in the garage :lol:

73, Roger Harrison VK2ZRH

BTW: I visited Julie at his Blue Mountains QTH on several occasions. He, too, had a clean tidy area . . . downstairs in the back garden (where we shot a video) :shock:

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Re: What's on your Workbench?

Post by VK4GHZ » Sat Apr 20, 2013 4:13 pm

VK3BJM wrote:Not sure how... Both the bench and the bottle are far too uncontaminated by contents.
Don't believe anything on the internet!
Especially staged photos, where the junq is quickly brushed aside. :wink:

Back to normal...
Minikits 10GHz multiplier board with a SynthNV (sig gen) hangin' orf the spec an

Image

Off to one side, should have done yesterday:
Glow plugs to fit into the 4M40 diesel in the Delica

Almost on the bench:
PE1RKI 23cm 120W PA to integrate into a box with a MiniKits 23cm RX preamp, Meanwell PSU, and relays etc.
FT-817 remote controller project (uses a $7.95 TV type IR remote from Jaycar)
ZL2BKC PLL boards

Image
VK2ZRH wrote:Note to Adam: my beer's bigger than your beer :lol:
Another connoisseur!
Ahh yes, but Roger, do a cost/benefit analysis, and 2 x 330mL (660mL) bottles work out a tad cheaper than one long neck 640mL. :wink:
At the local Dans anyway.
:mrgreen:
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Re: What's on your Workbench?

Post by VK3YE » Sat Apr 20, 2013 4:14 pm

Roger - good to hear.

Which reminds me of another theory. The amount of untidiness in the world is fixed. What is referred to as 'tidying' implies an 'untidying' (or 'polluting') somewhere else. Not unlike economists' concepts of 'negative externalities' and which leads to pricing them (eg carbon). Every social regulation in one facet breeds anarchy, vice and didobeidience elsewhere. Or, in planning, every Canberra must beget a Queanbeyan, as gentrification in one area spawns sprawl in another.

Hence one can only ever tidy a little but not all. Even chucking stuff as a method of tidying your patch implies trashing somewhere else.
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Re: What's on your Workbench?

Post by VK4GHZ » Sat Apr 20, 2013 4:17 pm

VK3YE wrote:...Even chucking stuff as a method of tidying your patch implies trashing somewhere else.
Thus maintaining a state of equilibrium! :D
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Re: What's on your Workbench?

Post by VK2CSW » Sat Apr 20, 2013 4:19 pm

Sorry but I can not trust anyone who drinks such god-awful beer :)

Currently on my bench is a rather stubborn early 1950's Sportco Clubmaster Martini with extraction problems.

Everything checks out, but it wont extract after a dozen or so rounds. I think it is just tired and does not like modern projectile lubricants.

(Nobody explicitly defined which workbench...)

:P
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Re: What's on your Workbench?

Post by VK2ZRH » Sat Apr 20, 2013 4:33 pm

OK, Adam. I concede. Your shack's bigger than my shack :lol:

At one of my local beverage conveyors, Tsing Tao long necks are slightly more economical per 100 ml than stubbies. At least, they were last week :)

And VK2CSW, in my youth I was a bushwalker/rockclimber. Our motto was: there is only one thing worse than warm, flat beer - that's no beer :mrgreen:

Taste is a personal thing, otherwise all blokes would be married to the same woman :shock:

I'm going outside now, despite the wind and rain, and measure up where I'm putting the new antenna mast when the revised NSW planning legislation goes through 8)

73, Roger Harrison VK2ZRH

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Re: What's on your Workbench?

Post by VK2ZRH » Sat Apr 20, 2013 7:12 pm

Roger's shack 1963.jpg
Here's my shack in 1963, North Balwyn, Melbourne. It was in the garage of my parent's house. I was attending 1st year Electrical Engineering at Swinburne Tech (now Swinburne University). I built that receiver from bits and pieces from salvaged other receivers. The main chassis was a stripped-down 3BZ receiver. That's a homebrew BFO you can see bolted to the left hand side. The dial was a spare for an R-1155 receiver. The front panel is Masonite. The eagle-eyed will spot a Scope soldering iron just to the right of the receiver. I still have that iron :shock:

The left hand Masonite panel hinged to the top shelf is a multimeter . . . built with multiple meters. :lol: The right hand panel has an antenna tuner, antenna selection switches and a loudspeaker. Somewhere there, there is a small chassis with 6m and 2m converters using Nuvistors.

Would you believe the pic is a Polaroid paper print?

Note the lack of beer on the workbench. I was under age :roll:

73, Roger Harrison VK2ZRH

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Re: What's on your Workbench?

Post by VK5RC » Sat Apr 20, 2013 8:41 pm

Not too much beer on the bench, my vision and soldering is bad enough as it is!
Some Arduino stuff, trying to get a small system going (for a friend with an off grid PV and wind generator) that will monitor battery voltage and if low for a while, start a generator etc, lots of logic loops esp while starting.
73
Robert VK5RC
Attachments
Shack2.jpg

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VK3AIF
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Re: What's on your Workbench?

Post by VK3AIF » Sat Apr 20, 2013 9:44 pm

Here is an impressive shack:-

Image

And Roger, who is the young bloke in the picture twiddling the knobs?

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Re: What's on your Workbench?

Post by VK5ZT » Sat Apr 20, 2013 10:23 pm

Here's the new shack following a recent relocation....

It is still a work in progress...needs insulation, A/C and better lighting!!

On the bench at present is eleven satellite LNBs I am checking to see how many are useful.

Also currently working on an XDK PLL for an upcoming project which will use one of the LNBs...

I use 42" HD plasma and lcd TVs as computer monitors ( also have normal Digital TV and Foxtel in shack)
Photo0198.jpg
Cheers Tim VK5ZT

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Re: What's on your Workbench?

Post by VK3FASW » Mon Apr 22, 2013 10:52 am

Project currently on my bench? MANY!!

Trio Fet Multi meter that was donated along with a mystery box of quality parts ( Some would call it more junk)
Philips FM92 + EPROM Burner - Attempting to make the "press send for Reverse" to work
Philips FM93 - now on 70cm...but RX is still a bit rough.
Thin Client PC - now running DOS for programing older Radios ( GM300s, PRM80's you know Dinosaurs)
Soundlevel meter still unbuilt in box.
2 1/2 Icom Mics be adapted for the IC251a
2 non working speak compressors.
Solder, cut off bit of wire 3 pairs of sidecutters bent screwdrivers, coffee stains and many pieces of paper with mystery notes that must have meant something at the time!

Whats on my bench? Well you did ask...... :lol:


Andre

VK3FASW

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