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 Plans for 2015
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 Return to top of page · Post #: 1 · Written at 10:38:52 PM on 24 November 2014.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6349

Amongst other things, some of my plans for 2015 include the following:-

1. Building the Currawong amplifier currently being described in Silicon Chip magazine.
2. To pay for the running of this site, and the expansion of my own collection, I am going to start buying unrestored radios, restoring them and then re-selling them.
3. Write some more articles based on the radios that I restore as per #2.
4. Possibly use some of the said radios as specimens for new Radio of the Week photos.

I may add to this list as the end of 2014 draws nigh.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 2 · Written at 3:53:27 AM on 30 November 2014.
Art's Gravatar
 Art
 Location: Somewhere, USA
 Member since 22 October 2013
 Member #: 1437
 Postcount: 895

What's the chassis of the amp Brad? or where are they telling you to get it from?


 
 Return to top of page · Post #: 3 · Written at 7:09:13 PM on 30 November 2014.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6349

A kit for the Currawong project will be available from Altronics soon.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 4 · Written at 8:32:52 PM on 30 November 2014.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6012

The kit will be "short form". The chassis, or plinth as per the SC design, is made of timber that you have to cut and assemble yourself.


 
 Return to top of page · Post #: 5 · Written at 10:16:40 PM on 30 November 2014.
Art's Gravatar
 Art
 Location: Somewhere, USA
 Member since 22 October 2013
 Member #: 1437
 Postcount: 895

I always thought of the chassis as a Faraday cage for at least the discreet components,
but since the amplification is happening in the valves, maybe the cage is more important around the valves themselves when they are present. Then at the same time it's a shame to hide them.

It's easy to learn that everything is an antenna here, I made an aircraft beacon receiver the right way and it works elsewhere, but I can make one here with any audio amplifier, a diode and wire.


 
 Return to top of page · Post #: 6 · Written at 11:16:13 PM on 30 November 2014.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6012

This design uses a PCB that sits atop the wooden plinth. It remains to be seen if it becomes an effective receiver under the right (or wrong) circumstances, given the amount of RFI these days.

http://www.futurlec.com/Pictures/Silicon_Chip_Nov_2014_300.jpg.


 
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