WHAT am I ?? - UK Vintage Radio Repair and Restoration Discussion Forum

Wendymott · 1st Jun 2020, 12:20 pm

Hyas peeps...... Now this is a VERY long shot......zillions to one... but I know that somewhere out there is the answer.
I bought a module from an Israeli supplier on Ebay..... It looks VERY interesting..I bought it for the Murata 455 Khz mechanical filter, which was cheaper than buying one without the gubbins... and I thought it looked interestin.. as Steve Davis would say.
I contacted the seller to try and establish its identity and maybe a... ahem.. circuit..but unfortunately they had no idea.
It is obviously VHF / UHF I think its a TX/RX..there is a block of 9 cans which suggest a 3 x helical filter and on the underside on IC is clearly marked and is a NBFM detector IC.
It maybe amateur band or commercial or military..... but hopefully one of you members may know.

ex seismic · 1st Jun 2020, 2:22 pm

Doesn't look military to me. Messy wiring and all those commercial electrolytics.

gmb

Jon_G4MDC · 1st Jun 2020, 2:49 pm

Looks a bit like the insides of an AOR AR3000, I don't think it is though.

Ha! Proved myself wrong. It is!

G6Tanuki · 1st Jun 2020, 2:50 pm

Does it have any part-numbers etched on the PCB?

There was a thread here not that long back about a similar board which - from memory - turned out to be part of a cellphone data-installation.

SiriusHardware · 1st Jun 2020, 3:17 pm

Quote:

Originally Posted by Jon_G4MDC

Ha! Proved myself wrong. It is!

...And that's why I love this forum. Post a picture of some completely nondescript PCB here and there is almost certainly someone who can tell you what it is.

Jon_G4MDC · 1st Jun 2020, 3:20 pm

It's that kind of place. I had one in the shed with the lids off!

Wendymott · 1st Jun 2020, 8:28 pm

Brilliant Jon.... 100% is....... Tanuki... yes there was a number silk screened... but Jon has hit the nail

all I need now is a schematic... I will do a search... Thanks guys

Wendymott · 1st Jun 2020, 8:57 pm

Well that was a well spent £24 inc postage....Full schematic from the tinternet...so all I have to do now is figure out some uses for the miriad of parts.. assuming they are not dead....

Radio1950 · 1st Jun 2020, 9:19 pm

Looks very similar to my AOR2002, but I would not have guessed where the PCB was from.
How lucky was it that Jon had one with case off!
Amazing.

G0HZU_JMR · 1st Jun 2020, 9:22 pm

I had a similar result a couple of years ago. I bought the RF/IF board salvaged from a Yaesu FT736R for just a few quid as a 'buy it now' on ebay. I can't believe someone else didn't snap it up. I've used several classic RF parts from it already and there are plenty more on the board. There are a couple of PLL based synthesisers on there too. An absolute bargain!

Jon_G4MDC · 1st Jun 2020, 10:33 pm

I wouldn't be sure that the board didn't come from some earlier AOR set.

Mine has some dealer fitted mods which added yet another 455kHz filter and an IF buffer output board.
For sure it is the same basic thing, so I just got lucky!

I notice I have some top side silk screen detail that one does not have between the helical filters and the edge of the PCB. Except when I look again there it is. Wrong again HI!

Wendymott · 2nd Jun 2020, 10:37 am

Hi Jon and Jeremy.. Which ever...I have a very good idea what stuff is now..some of the active devices look very useful...Whoever did the CAD for that pcb... maybe a collective effort, had his / her job certainly cut out.. I wonder how many prototypes were made before acceptance..as it is there are a couple of "additions". I wonder if the seller has the PLL VFO pcb ?? might be worth an ask.

1st Jun 2020, 12:20 pm	#1
Wendymott Octode Join Date: Jun 2013 Location: Huddersfield, West Yorkshire, UK. Posts: 1,795	WHAT am I ?? Hyas peeps...... Now this is a VERY long shot......zillions to one... but I know that somewhere out there is the answer. I bought a module from an Israeli supplier on Ebay..... It looks VERY interesting..I bought it for the Murata 455 Khz mechanical filter, which was cheaper than buying one without the gubbins... and I thought it looked interestin.. as Steve Davis would say. I contacted the seller to try and establish its identity and maybe a... ahem.. circuit..but unfortunately they had no idea. It is obviously VHF / UHF I think its a TX/RX..there is a block of 9 cans which suggest a 3 x helical filter and on the underside on IC is clearly marked and is a NBFM detector IC. It maybe amateur band or commercial or military..... but hopefully one of you members may know. Attached Thumbnails __________________ Should get out more. Regards Wendy G8BZY

1st Jun 2020, 2:22 pm	#2
ex seismic Heptode Join Date: Sep 2009 Location: Tonbridge, Kent, UK. Posts: 686	Re: WHAT am I ?? Doesn't look military to me. Messy wiring and all those commercial electrolytics. gmb

1st Jun 2020, 2:49 pm	#3
Jon_G4MDC Nonode Join Date: Nov 2015 Location: Welwyn Garden City, Hertfordshire, UK. Posts: 2,015	Re: WHAT am I ?? Looks a bit like the insides of an AOR AR3000, I don't think it is though. Ha! Proved myself wrong. It is! Attached Thumbnails Last edited by Jon_G4MDC; 1st Jun 2020 at 2:57 pm.

1st Jun 2020, 2:50 pm	#4
G6Tanuki Dekatron Join Date: Apr 2012 Location: Wiltshire, UK. Posts: 13,996	Re: WHAT am I ?? Does it have any part-numbers etched on the PCB? There was a thread here not that long back about a similar board which - from memory - turned out to be part of a cellphone data-installation.

1st Jun 2020, 3:20 pm	#6
Jon_G4MDC Nonode Join Date: Nov 2015 Location: Welwyn Garden City, Hertfordshire, UK. Posts: 2,015	Re: WHAT am I ?? It's that kind of place. I had one in the shed with the lids off!

1st Jun 2020, 8:28 pm	#7
Wendymott Octode Join Date: Jun 2013 Location: Huddersfield, West Yorkshire, UK. Posts: 1,795	Re: WHAT am I ?? Brilliant Jon.... 100% is....... Tanuki... yes there was a number silk screened... but Jon has hit the nail all I need now is a schematic... I will do a search... Thanks guys __________________ Should get out more. Regards Wendy G8BZY

1st Jun 2020, 8:57 pm	#8
Wendymott Octode Join Date: Jun 2013 Location: Huddersfield, West Yorkshire, UK. Posts: 1,795	Re: WHAT am I ?? Well that was a well spent £24 inc postage....Full schematic from the tinternet...so all I have to do now is figure out some uses for the miriad of parts.. assuming they are not dead.... __________________ Should get out more. Regards Wendy G8BZY

1st Jun 2020, 9:19 pm	#9
Radio1950 Hexode Join Date: Apr 2017 Location: Buderim, Queensland, Australia. Posts: 428	Re: WHAT am I ?? Looks very similar to my AOR2002, but I would not have guessed where the PCB was from. How lucky was it that Jon had one with case off! Amazing.

1st Jun 2020, 9:22 pm	#10
G0HZU_JMR Dekatron Join Date: Sep 2010 Location: Cheltenham, Gloucestershire, UK. Posts: 3,077	Re: WHAT am I ?? I had a similar result a couple of years ago. I bought the RF/IF board salvaged from a Yaesu FT736R for just a few quid as a 'buy it now' on ebay. I can't believe someone else didn't snap it up. I've used several classic RF parts from it already and there are plenty more on the board. There are a couple of PLL based synthesisers on there too. An absolute bargain! __________________ Regards, Jeremy G0HZU

1st Jun 2020, 10:33 pm	#11
Jon_G4MDC Nonode Join Date: Nov 2015 Location: Welwyn Garden City, Hertfordshire, UK. Posts: 2,015	Re: WHAT am I ?? I wouldn't be sure that the board didn't come from some earlier AOR set. Mine has some dealer fitted mods which added yet another 455kHz filter and an IF buffer output board. For sure it is the same basic thing, so I just got lucky! I notice I have some top side silk screen detail that one does not have between the helical filters and the edge of the PCB. Except when I look again there it is. Wrong again HI! Last edited by Jon_G4MDC; 1st Jun 2020 at 10:40 pm.

2nd Jun 2020, 10:37 am	#12
Wendymott Octode Join Date: Jun 2013 Location: Huddersfield, West Yorkshire, UK. Posts: 1,795	Re: WHAT am I ?? Hi Jon and Jeremy.. Which ever...I have a very good idea what stuff is now..some of the active devices look very useful...Whoever did the CAD for that pcb... maybe a collective effort, had his / her job certainly cut out.. I wonder how many prototypes were made before acceptance..as it is there are a couple of "additions". I wonder if the seller has the PLL VFO pcb ?? might be worth an ask. __________________ Should get out more. Regards Wendy G8BZY