Trading Post

Wanted to buy, sell or exchange....

You can respond to any of the requests below by sending an email direct to the contact listed, or by using our "Contact Us" page.

October 2021
The SA Group has purchased a substantial number of old knobs for radios, TV's and some test equipment . They look like they range from the late 1930's to the mid 1960's.

We intend to create a "Knob Bank" in order to sell to members at competitive prices. It will be run in a similar manner to the existing valve bank, and will be managed by Committee Members, Keith Ellison and Ian Smyth.

We are in the process of photographing and cataloguing all the knobs and hope to have them online in the near future. We are trying to find the best method of sales that helps members and doesn't create a lot of work!
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Photographing the knobs on graph-paper might work better than this example.

Giving accurate dimensions will be critical for both buyers and sellers.
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Thumb screws or push-ons?

Both he method of attachment and shaft size will also be critical information for buyers and sellers.
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Relief and patterning will also have to be captured in photographs for both buyers and sellers.

Decent pictures of small objects like knobs can be tricky to take.
Sept. 2021
WANTED - Philips "Snake-Head" Pickup
Does anyone have an old Philips turntable that has this 3-prong bayonet fitting into the tone arm? The cartridge that holds the needle on this one has died and I am looking for a replacement. This is a Mono record player, not a stereo "microgroove" head. Dates for the late 1950's to mid 60's.
(See photos below)

Willing to negotiate on price. Please contact:
Ian Smyth
ph: 0488-488-776
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Philips "Snake-Head" Cartrtridge (with sideways rocking movement to change needle.) Not sure what M and N stand for! Why is the green N larger than the red M?
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With cartridge removed you can see the 3-pronged bayonet connector.

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Underneath: You can see the two needles side-by-side on the rocking mount.
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Poor quality photo of the markings on the head.

Sept. 2021
Tony Bell is looking to buy an HP 410C V.T.V.M. in good working condition. He thinks there was also a D version. Tony is looking to buy or swap with anyone else who collects these. He has an HP 410B that he is willing to swap. Please contact Tony Bell.
Jan. 2020
FREE GIVE AWAY - Rare "Scharnberg Strauss" Model 41 Circuit Diagram
Recently, a member provided Ian Smyth with the circuit diagram for the 1947 Scharnberg Strauss bakelite mantle model 41 which he is now willing to share with other members who are trying to restore one of these popular South Australian made radios. Contact Ian on 0488-488-776 or by email at
Jan. 2020
FOR SALE - Copies of the book, "Adelaide's Early Radios and Tape Recorders" by Neville Ellison
$20.00 (incl. post & packaging) Contact Keith Ellison on 0417 304 028 or by email at This is a full 109 page soft-copy of the book, published in 1996 (and now out of print). DVD with "click me" menu options to view the book on a computer (in low-resolution.) View and print pages/chapters on a computer (in high-res) and view the PDF CX magazine story on the "Ellison Museum of Radio & Magnetic Recording". The DVD can also be inserted into a DVD player to view a short video/audio review of the Museum with Neville Ellison.

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The information provided in this site is based on information supplied by the HRSA (unless otherwise specified), and is intended only as an introduction and guide to the HRSA for the range of available products, items and services for its own financial members.