Re: [Drakelist] Blue LED Bulbs for Drakes
Another ham directed me to a CoinTaker, pinball machine parts company at http://www.cointaker.com, for LED 47 replacements. Go to the quick search box and search for 47 and you'll get 104 products that includes bundles of 100 along with both specific pinball applications and regular frosted bulbs in various colors. I haven't bought any of these yet, but at only $0.69 each for the regular 47 replacements, I intend to to give them a try. 73, Tony Stalls K4KYO At 12:47 AM 2/3/2011, Dennis Monticelli wrote: The LEDs in this product look just like the ones that come in the XMAS lite strings. That market probably drove mass production and low prices, which in turn enabled this outfit to build a bulb. It would probably benefit from a diffuser in some applicatons. Thanks for sharing your finding with the group. Dennis AE6C On Wed, Feb 2, 2011 at 3:42 PM, Kevin Elliott mailto:kg...@yahoo.comkg...@yahoo.com wrote: First I want to say I am sorry if this upsets the person that is making and selling the blue LED bulbs on Ebay and other web sites. I just can't afford to pay $30.00 plus shipping for 2 bulbs. So I went looking for a different source and I found one that was much cheaper. The company sells #47 Blue (or other color) LED bulbs. The best thing is the price... $1.58 each. The worked perfect on the main dial but were not quite bright enough for the meters until I took the reflector off and scrubbed it white again. Now for $3.18 I can but the blue bulbs in the TR-4 or even opt for red since I ordered some of them and they look very nice as well. Here is the link http://www.centsibleamusements.com/pinball-led-44-47.aspxhttp://www.centsibleamusements.com/pinball-led-44-47.aspx Enjoy ___ Drakelist mailing list mailto:Drakelist@zerobeat.netDrakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] Blue LED Bulbs for Drakes
SuperBrightLeds.com also has some similar to those: http://www.superbrightleds.com/cgi-bin/store/index.cgi?action=DispPagePage2Disp=%2FBA9S6_specs.htm 98 cents for wide angle (looks like single led) or $1.98 for a 4 LED cluster (BA9s). From: Kevin Elliott To: drakelist Date: 2/2/2011 3:45 PM Subject:[Drakelist] Blue LED Bulbs for Drakes http://www.centsibleamusements.com/pinball-led-44-47.aspx ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] DIY Iso Xfmrs
I did the same thing back when with a couple of 6.3 VAC 1A filament transformers. Worked great! Bob AG5X ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] R-4A amplifier
Can audio be feed out of the R-4A bypassing the onboard amplifier? Can a better amplifier be installed? Does someone do this mod? ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] R-4A amplifier
Can audio be feed out of the R-4A bypassing the onboard amplifier? Yes, you can bypass the internal AF amp stages for headphone/speaker audio, but they must remain active (see below). I do this with a Marantz 1030C. The following mod is easily reversible without leaving no permanent residue in the event of a future sale. 1) Add a 1.0 uF cap, positive end to the AF GAIN wiper arm; 2) Connect a length of shielded audio cable to the other end of the new cap, shield to the chassis; 3) Disconnect the existing wiring to the RCA SPKR jack (dress it so that it can be easily restored); and 4) Connect the other end of the new shielded audio cable to the RCA SPKR jack, shield to the chassis. With this change, the R-4A's AF GAIN control will still remain active to the external audio amp. Headphone and speaker audio comes from the new external amp. Tube V7 must remain in its socket for ANTI-VOX operation. The new cap can be either a low ESR electrolytic or tantalum type. If you're an audiophile, you'll use the former. Myself, I have no issues using inter-stage tantalum coupling caps for communications audio. Paul, W9AC ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] R-4A Recap
Should I recap my R-4A no matter what just because it is 30 years old? ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
