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| Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment. |
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4th Oct 2018, 11:41 am
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#1 |
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Octode
Join Date: Jun 2013
Location: Huddersfield, West Yorkshire, UK.
Posts: 1,795
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Filter ???
Hi peeps... I bought this.. "pig in a poke" last night at a junk sale.. I know its a filter........ a High power filter at that.. but does anyone know more about it please ?
It had many torx screws, the block is machined aluminium and the top is,silver plated......looks military...
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Should get out more. Regards Wendy G8BZY |
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4th Oct 2018, 12:12 pm
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#2 |
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Pentode
Join Date: Oct 2005
Location: Hebden Bridge, West Yorkshire, UK.
Posts: 200
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Re: Filter ???
Hi Wendy,
My guess would be that it came out of a mobilephone base station installation, possibly the antenna diplexer filter to separate transmit from receive with single antenna working. The big connector (DIN7/16 type) would be the antenna connection, SMA the receiver and the N type the transmitter. Probably tuned around 800/900Mhz.
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Peter G8BBZ |
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4th Oct 2018, 1:42 pm
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#3 |
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Guest
Posts: n/a
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Re: Filter ???
I'll second Peters opinion, the lengths of the bits look like 900MHz ish. Beautifully made too.
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4th Oct 2018, 3:00 pm
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#4 |
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Rest in Peace
Join Date: Jun 2006
Location: Chard, South Somerset, UK.
Posts: 7,457
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Re: Filter ???
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4th Oct 2018, 3:24 pm
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#5 |
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Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,864
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Re: Filter ???
Oulu, Finland is also the location of a well known cellphone company.
David
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Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done |
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4th Oct 2018, 5:03 pm
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#6 |
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Heptode
Join Date: Mar 2008
Location: Newmarket, Suffolk, UK.
Posts: 612
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Re: Filter ???
The telecoms arm of ADC (now owned by TE Connectivity) was based in Minneapolis
I believe ADC supplied TMA and GMAs to OEMs and this probably the duplexer from one I never saw this part though Fred |
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4th Oct 2018, 5:05 pm
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#7 | |
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Heptode
Join Date: Mar 2008
Location: Newmarket, Suffolk, UK.
Posts: 612
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Re: Filter ???
Quote:
https://en.wikipedia.org/wiki/ADC_Telecommunications I am but a footnote [14] in that! Fred |
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4th Oct 2018, 10:06 pm
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#8 |
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Octode
Join Date: Jun 2013
Location: Huddersfield, West Yorkshire, UK.
Posts: 1,795
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Re: Filter ???
Ok thanks peeps.....It just looked interesting and HEAVY.. Nothing really of worth..except the M3 torx screws, I cannot see me salvaging the tubular capacitors.. or stand offs..
If anyone wants it...call and collect.
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Should get out more. Regards Wendy G8BZY |
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4th Oct 2018, 11:58 pm
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#9 |
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Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,535
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Re: Filter ???
A machined lump of non ferrous metal of that size may have a useful scrap value if weighed in "clean" with any odd metal bits and pieces removed!
Copper about £3/kg, brass about £2-50/kg and aluminium about 50p/kg.
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....__________ ....|____||__|__\_____ .=.| _---\__|__|_---_|. .........O..Chris....O |
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7th Oct 2018, 12:04 pm
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#10 |
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Octode
Join Date: Jun 2013
Location: Huddersfield, West Yorkshire, UK.
Posts: 1,795
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Re: Filter ???
Chris... its actually machined brass.. with a silver coat... although I guess the silver would be microns thick. I will weigh it in.
Please close thread MOD
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Should get out more. Regards Wendy G8BZY Last edited by Wendymott; 7th Oct 2018 at 12:05 pm. Reason: Additiopnal info |
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