I will take a look at it for you. Call me this evening 4199452359 Jeff. W8CQ Sent from my Verizon Wireless BlackBerry 8830
-----Original Message----- From: Bill <[EMAIL PROTECTED]> Date: Tue, 29 Jul 2008 10:10:51 To: <[email protected]> Subject: Re: [drakelist] Drake L-4B Thanks John, I knew that which is why I wont touch anything except to jumper the power supply for 220V. � I live near Chicago, is there anyone capable of working on this power supply or who can I ship it to? � Thanks! � Bill --- On Tue, 7/29/08, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: From: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Subject: Re: [drakelist] Drake L-4B To: [email protected] Date: Tuesday, July 29, 2008, 11:42 AM [EMAIL PROTECTED] made an utterance to the drakelist gang ---------------------------------------------------------------------- Bill, Please don't take this wrong, and no offense to the guys here on the reflector, but you need to find someone around you that could come over and "Lay Hands" on this project with you that knows something about High Voltage Power Supplies. You can be killed or injured very easily if you really don't understand working on this kind of equipment, the voltage and current levels in this equipment are unforgiving when you get across them. If the person who sold you this power supply is right and you have no bleeder resistors, you could have a lethal charge RIGHT NOW across the filter capacitors, be very careful, get help. The guys on this reflector are extremely helpful, but without eye's, ears, and hands on the unit it's difficult to really know what's going on. John N. Hudson III, WA6HYQ. Bill <[EMAIL PROTECTED]> Sent by: To [EMAIL PROTECTED] [email protected] erobeat.net cc Subject 07/29/2008 06:32 Re: [drakelist] Drake L-4B AM Please respond to [EMAIL PROTECTED] t.net Evan and John, Thanks for the responses, I am not sure about the bleeders�this is what the guy who sold me the amp told me. Where are the bleeders located? and as soon as the amp show up if you could help me figure this out it and we will identify the harbach mod and then we can see if there are any other mods that need to be done. 73 Bill K9BUB --- On Tue, 7/29/08, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: From: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Subject: Re: [drakelist] Drake L-4B To: [email protected] Date: Tuesday, July 29, 2008, 7:45 AM Bill, I'm not sure which Harbach mod(s) you are referring to.� There is a step-start for the high voltage, step-start for the filaments, replacement rectifier and capacitor board, and which sort of determines what else you might do. When I rebuild supplies I replace just about everything except the power transformer, and with components that have better ratings than the original.� One important mod is to replace the 5K 7wt resistor on the underside of the supply with a 20 watt equivalent; your unobtainable ALC pot will thank you for it. I also place one or two fans on top of the supply.� I use a model that is 220v but will start and run reliably on 110v.� It is so quiet you can't hear it and it brings the case temperature down dramatically. 73, Evan, K9SQG -----Original Message----- From: Bill <[EMAIL PROTECTED]> To: [email protected] Sent: Mon, 28 Jul 2008 10:56 pm Subject: Re: [drakelist] Drake L-4B I just found out the the L-4B�has the�Harbach mod and the bleeder resistors were removed to eliminate excessive heat. Is there anything else I need to do to the power supply? Thanks! 73 de Bill K9BUB --- On Mon, 7/28/08, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: From: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Subject: Re: [drakelist] Drake L-4B To: [email protected] Date: Monday, July 28, 2008, 2:41 PM I would think 20A would be fine unless the run is long, then I'd opt for 30A.� Be aware that pin arrangements for the plug and socket change for the various ratings. Even if the PS is working ok with the amp, I always replace the 5K 7wt resistor on the underside of the supply with a 5K equivalent, 20 watt rating.� When the original resistor fails, it takes out the ALC pot that also contains the standby switch; these haven't been available for decades. -----Original Message----- From: Duane Calvin <[EMAIL PROTECTED]> To: [email protected] Sent: Mon, 28 Jul 2008 2:34 pm Subject: Re: [drakelist] Drake L-4B I ran a 20A line for my Alpha 99.� Works great. ��������73,� Duane�� AC5AA At 01:23 PM 7/28/2008, you wrote: Just bought a Drake L-4B amp and while I am waiting for the amp to arrive I had the electrician over. He wants to know what everyone is running for their 240V line. 15, 20 or 30 amp service. Thanks! 73 de Bill K9BUB Duane Calvin, AC5AA Austin, Texas www.ac5aa.com The Famous, the Infamous, the Lame - in your browser. Get the TMZ Toolbar Now! The Famous, the Infamous, the Lame - in your browser. 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