The world's best and largest dating site for mature/experienced singles, admirers and friends. TLC woman, charming single man, 40 plus singles, we invite you to join us in jokes, snags, chitchat, laughter and making lasting friendships.
So what did we all get at Wyong?
I was on the look out for the usual homebrew goodies, variable
capacitors, reduction drives, cases, meter movements, crystal filters,
boards with good stuff on them, etc.
I saw very little worth picking up, but I did grab an AF-1.0 MHz BWD
signal generator. It is tube based, weighs a heck of a lot, but has a
very lovely silky-smooth dial mechanism, and the case is pretty sweet
as well. I am really thinking twice about gutting it for the dial
drive, it is just an excellent unit, but it would make a great
receiver or piece of test equipment on a more useful frequency range.
Another solid state signal generator I got had banana jack output, but
I just finished changing that to BNC to match all my leads. It has a
nice anti-backlash reduction drive, but it isn't geared down enough to
make it especially easy to use, it covers LF-HF in just 5 bands. That
one might get junked for the drive, but until I find a 6:1 drive to
repair my current "Loadstar" unit it is easier to use.
Not much else to mention, some egg insulators from the WICEN stand,
some books from the WIA book sale, and some transmitting twinlead from
Andrews. That's about it.
--
Alan Yates VK2ZAY
http://www.vk2zay.net/
Thanks Alan. Yes there is a superhet using 12AD6/12DZ6 appeared in
QST in 2003 - I'm building that at present. Apparently there was a
mobile transmitter designed in the 60's some time, I might track that
one down as well.
73 chris
--- In ARNSWHomebrewgroup@..., "Alan Yates"
<homebrewgroup@...> wrote:
>
> Chris,
>
> I built a hybrid regenerative receiver using a 12DZ6 a few years
back:
>
> http://www.nj7p.org/Tube4.php?tube=12DZ6
> http://www.vk2zay.net/article.php/40
>
> The plate current limit restricts the kind of power you can get from
> this particular device, but it would function for signal processing
> stages, either TX or RX.
>
> The heater currents are fairly modest, but for battery powered QRP
> gear in portable use it is a killer; best to use solid state. If it
> is just for some fun working with tubes from the 12 V shack supply
> then it is quite feasible.
>
> Regards,
> Alan VK2ZAY
>
> --- In ARNSWHomebrewgroup@..., "Chris Flak VK2QV"
> <flakkie@> wrote:
> >
> > Has any one experimented with these valves? They are 12V DC
valves used
> > in some 60's American car radios. I'm curious if they can be used
in a
> > QRP transmitter. Maybe even a hybrid setup using MOSFETS in the
output
> > stage. Any input/advice/comment appreciated.
> >
> > 73 chris vk2qv
> >
>
Chris,
I built a hybrid regenerative receiver using a 12DZ6 a few years back:
http://www.nj7p.org/Tube4.php?tube=12DZ6http://www.vk2zay.net/article.php/40
The plate current limit restricts the kind of power you can get from
this particular device, but it would function for signal processing
stages, either TX or RX.
The heater currents are fairly modest, but for battery powered QRP
gear in portable use it is a killer; best to use solid state. If it
is just for some fun working with tubes from the 12 V shack supply
then it is quite feasible.
Regards,
Alan VK2ZAY
--- In ARNSWHomebrewgroup@..., "Chris Flak VK2QV"
<flakkie@...> wrote:
>
> Has any one experimented with these valves? They are 12V DC valves used
> in some 60's American car radios. I'm curious if they can be used in a
> QRP transmitter. Maybe even a hybrid setup using MOSFETS in the output
> stage. Any input/advice/comment appreciated.
>
> 73 chris vk2qv
>
Has any one experimented with these valves? They are 12V DC valves used
in some 60's American car radios. I'm curious if they can be used in a
QRP transmitter. Maybe even a hybrid setup using MOSFETS in the output
stage. Any input/advice/comment appreciated.
73 chris vk2qv
Hi Homebrewers,
Details of the LC meter I showed this afternoon can be found via the
link below.
http://ironbark.bendigo.latrobe.edu.au/~rice/lc/
The original design was from Almost All Digital Electronics.
This company still sells this LC meter as a kit but it has been
copied by many with the same surprisingly good results.
http://www.aade.com/
As said I can program a PIC16F84 for those that don't have a
programmer. Just send me an email and we work something out.
73's,
Koen VK2ZHA
Very quiet here this month so everyone must either be busy with Xmas
or building gear. Who is working on the new "80m Challange" TX as
detailed by Peter VK2EMU on the VK2WI broadcast and also the Homebrew
2m net earlier this month.
See you at Macca's Nth Parramatta on the 2nd January and after the
Trash and Treasure at Dural on 28th January.
Hi guys,
I want to build a dipmeter for HF and I am looking for a split stator
tuning capacitor or butterfly cap of around 130 pF. The smaller the
better and preferably with a 6mm metal shaft.
Anyone has one in the junkbox that I can buy or swap for something you
need?
Alternatively if you know where to buy one that info is welcome too.
See you in Dural next Sunday.
Koen, VK2ZHA
Dear all,
I'll be up in Qld for a week or so, so won't be at the homebrew group
meeting on Tuesday evening.
Back in circulation Wed Sept 13.
Cheers
Owen
,
Hi Nick, only just noticed this message, has anyone come back to you
with some advice yet. If so how about letting us know what you have
done. If not then could you let us know what sort of capacity the
batts are and basically how you would like to re-charge them ie
solar, mains bat charger, petrol generator etc.
Not knowing how big they are, have to ask if your concept is to
build them up or connect them into some form of "power pak" with
terminals for battery, charger and equipment. Also perhaps some form
of metering (meters or LEDs or LCD display).
For emergency/mobile use I would strongly sugest this route as I
have just paid over $200 to have my HF rig repaired after
accidentally connecting it to the generator instead of the battery,
one very dark and cold night out in the bush.
Look forward to hearing from you
Brian VK2TOX
--- In ARNSWHomebrewgroup@..., Nicholas Fisher
<nicholasdfisher@y...> wrote:
>
> Hi Group
>
> I've recently aquired 5 sealed lead acid batteries out of a UPS
that I want to set up in parallel as a standby supply for the shack
and as a portable supply for field/WICEN use.
>
> I'd really appreciate some advice on the best way to set up a
charger.
>
> Cheers
>
> Nick VK2ZNF
>
>
> ---------------------------------
> The LOST Ninja blog: Exclusive clues, clips and gossip.
>
Hello Shaun and Keon,
re the HF mobile antenea, tow bar mount seems to be the way to go to
reduce wind and collision damage (unless you back into something !!)
next time you are up at Dural check out Les VK2KYJ and his tow bar
mounted remotely controlled HF whip, think he does it with a PIC or
AVR chip monitoring SWR. It very compact and seems to work well.
The Group is headed in that direction as it is a common requirement,
next meeting at Dural may be on 2m anteneas (vertical), get us some
ideas for the HF mobile (presume need multiband) and we can work on
a project and most importantly source the bits to build it with.
Gosh, you might even see yourselves in the next Homebrew Newsletter.
Brian VK2TOX
--- In ARNSWHomebrewgroup@..., "Koen" <vk2zha@i...>
wrote:
>
> --- In ARNSWHomebrewgroup@..., "Shaun"
> <shaunbreath@o...> wrote:
> >
> > Hello everyone,
> >
> > I missed last weeks homebrew due to another comitment. I am
> primerily interested in building a HF mobile antenna for the car.
> Was anything along these lines discussed?
> >
> > Many thanks
> >
> > VK2XPP
> >
> > Shaun
> >
> Hi Shaun,
>
> No, not specifically but the design of the vertical for 80m can be
> used for a mobile antenna as well. The most difficult part of a
> mobile antenna is to make it strong enough so it doesn't blow to
> pieces when you get on the highway.
>
> Cheers,
>
> Koen, VK2ZHA
>
Hi Shaun,
Kit looks good, how about one of you guys with a bit of time on your
hands work it up as an interface for testing a piece of equipment.
Say you have just completed a transmitter or PSU project and you
want to test it over a period, then you need to monitor
temperatures , control voltages etc over a period of time so also
need to log the parameters to a file.
Have a go at some or all of this
Brian K.
--- In ARNSWHomebrewgroup@..., "Shaun"
<shaunbreath@o...> wrote:
>
>
>
> Has anyone thought of using one of these for an echolink or
similar radio controler??
>
>
> Shaun
> USB Experimenter's Interface Kit
>
> Interface your computer to the real world with this sophisticated
USB Kit. There are five digital inputs to monitor the state of
external switches or controls and two variable gain analogue inputs
that can be connected to sensors and used for measuring temperature,
humidity, voltage, current, & other variable parameters. Eight
digital and two analogue outputs are available for controlling
external equipment. The kit is supplied with all components, silk
screened PCB, assembly manual, and software. PCB measures 145 x 87mm.
> Specifications:
> * 5 Digital inputs
> * 2 Analogue inputs with variable gain and integrated counters
> * Analogue input range 0 to 5VDC
> * 8 Open collector digital outputs
> * 2 Analogue outputs PWM or 0 to 5VDC
> * On-board test buttons for inputs and LED
> * USB powered
> * Win98SE or above (Not NT)
>
> http://www.velleman.be/downloads/0/user/usermanual_k8055_dll_uk.pdf
>
Has anyone thought of using one of these for an echolink or similar radio controler??
Shaun
USB Experimenter's Interface Kit
Interface your computer to the real world with this sophisticated USB Kit. There are five digital inputs to monitor the state of external switches or controls and two variable gain analogue inputs that can be connected to sensors and used for measuring temperature, humidity, voltage, current, & other variable parameters. Eight digital and two analogue outputs are available for controlling external equipment. The kit is supplied with all components, silk screened PCB, assembly manual, and software. PCB measures 145 x 87mm. Specifications: * 5 Digital inputs * 2 Analogue inputs with variable gain and integrated counters * Analogue input range 0 to 5VDC * 8 Open collector digital outputs * 2 Analogue outputs PWM or 0 to 5VDC * On-board test buttons for inputs and LED * USB powered * Win98SE or above (Not NT)
Subject: [ARNSWHomebrewgroup] Re: Last weekends project
--- In ARNSWHomebrewgroup@..., "Shaun" <shaunbreath@o...> wrote: > > Hello everyone, > > I missed last weeks homebrew due to another comitment. I am primerily interested in building a HF mobile antenna for the car. Was anything along these lines discussed? > > Many thanks > > VK2XPP > > Shaun > Hi Shaun,
No, not specifically but the design of the vertical for 80m can be used for a mobile antenna as well. The most difficult part of a mobile antenna is to make it strong enough so it doesn't blow to pieces when you get on the highway.
--- In ARNSWHomebrewgroup@..., "Shaun"
<shaunbreath@o...> wrote:
>
> Hello everyone,
>
> I missed last weeks homebrew due to another comitment. I am
primerily interested in building a HF mobile antenna for the car.
Was anything along these lines discussed?
>
> Many thanks
>
> VK2XPP
>
> Shaun
>
Hi Shaun,
No, not specifically but the design of the vertical for 80m can be
used for a mobile antenna as well. The most difficult part of a
mobile antenna is to make it strong enough so it doesn't blow to
pieces when you get on the highway.
Cheers,
Koen, VK2ZHA
I missed last weeks homebrew due to another comitment. I am primerily interested in building a HF mobile antenna for the car. Was anything along these lines discussed?
--- In ARNSWHomebrewgroup@..., "brian_vk2tox"
<brian_vk2tox@y...> wrote:
>
> Hi everyone, check out the "Photos" section of this group for a few
of
> the shots taken by John VK2ASU on the day, just got the proof sheets
> so will add more when have sorted them out.
>
Hi guys,
I have posted some more photos just in time for the next Dural meeting.
I hope you like them.
Cheers,
Koen.
I've recently aquired 5 sealed lead acid batteries out of a UPS that I want to set up in parallel as a standby supply for the shack and as a portable supply for field/WICEN use.
I'd really appreciate some advice on the best way to set up a charger.
Hi Stephen, interested in this project, converter is a Drew Diamond or
AR Circuit, or you roll your own.
Have you located the software to read the DRM yet.
73 Brian VK2TOX
>
> So far; I have a 40m/11m converter and changed the 20MHz crystal to
> 7159kHz, a stock crystal. This is 14kHz away from NZBC on 7145kHz
and
> may be close enough to decode or pull the rock low by 2kHz.
> So good.
> Stephen
>
So far; I have a 40m/11m converter and changed the 20MHz crystal to
7159kHz, a stock crystal. This is 14kHz away from NZBC on 7145kHz and
may be close enough to decode or pull the rock low by 2kHz.
So good.
Stephen
It seems there are DRM tests on 1386kHz and 1440kHz in Australia and
NZBC on SW. There are several simple receivers described; basically
regens and direct conversion receivers. PC software is needed also.
Question is has anyone already made a start on this?
Stephen
Gary,
Very interesting - comprehensive!
73
Owen
Gary wrote:
> Hi All,
>
> http://www.giangrandi.ch/electronics/crystalfilters/xtalfilters.shtml
>
> I found this site interesting, for those who like to design there own
> crystal filters.
>
> 73's Gary
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
Offline 
Send Email
