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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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27th Jan 2010, 3:05 pm | #1 |
Retired Dormant Member
Join Date: Jan 2010
Location: Dudley, UK.
Posts: 2
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Yaesu FRG7 illumination.
Hi there all, my name is Jeff.
I have purchased a Yaesu FRG7. All works except for the two lamps that illuminate the centre MHz wheel. I bought some from a model shop but they are not bright enough, also I have been told to get LED's with a resistor in line. Could anybody tell me what bulbs or LED's to use and what size resistor? Thanks, Jeff M3LWG. Last edited by Darren-UK; 27th Jan 2010 at 4:17 pm. Reason: Moved to a more suitable section and various F-K problems fixed. |
29th Jan 2010, 5:43 pm | #2 | |
Retired Dormant Member
Join Date: Jun 2009
Location: Leesthorpe, Leicestershire, UK.
Posts: 15
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Re: Yaesu FRG7 illumination.
Hi Jeff,
I came across this article on a FRG-7 newsgroup for replacement bulbs: Quote:
Regards, Tim |
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29th Jan 2010, 10:05 pm | #3 |
Nonode
Join Date: Oct 2008
Location: Warsaw, Poland and Cambridge, UK
Posts: 2,669
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Re: Yaesu FRG7 illumination.
Based on those specs, it looks like a 5mm white LED with about 1kOhm in series with it would work very nicely. Assuming the supply is DC. All that's necessary is to find which end is positive and get the LED the right way round.
Disclaimer: I've never seen an FRG-7, so might be talking rubbish. There might be problems with the light distribution because many white LEDs are designed with a rather narrow viewing angle, so they might just make a 'spot' on the thing they're supposed to be illuminating. Look for diffused ones and all should be well. Chris |
30th Jan 2010, 12:41 am | #4 |
Retired Dormant Member
Join Date: Jan 2010
Location: Dudley, UK.
Posts: 2
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Re: Yaesu FRG7 illumination.
thanks tim and chris for the invaluble information very usefull regards, jeff m3lwg
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20th Feb 2010, 3:38 pm | #5 |
Hexode
Join Date: Jan 2010
Location: Blackburn, Lancashire, UK.
Posts: 399
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Re: Yaesu FRG7 illumination.
I would also go with the White LED option. There are numerous ultra bright/superbright LED's for sale at http://www.phenoptix.com .Very, very cheap and extremely fast delivery. Hope this helps. Regards. Damian.
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20th Feb 2010, 4:35 pm | #6 |
Rest in Peace
Join Date: Dec 2008
Location: Burton upon Trent, East Staffordshire, UK.
Posts: 1,686
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Re: Yaesu FRG7 illumination.
Jeff,
If you PM me your address I'll send you some white LEDs to play with. They have short legs as the've been in a PCB, but as you'll have to add Rs and wires it's no disadvantage. Alan |