I consider it like a bench power tool switch. You pull "ON" and push "OFF". This is done so you can punch the switch in the event of a disaster rather than having to carefully aim and grab. So to me, pulling to put the amp on line and pushing to put into standby makes sense. OTOH, I like big, easily visible toggle switches for operate and standby. If they have lights, so much the better!
Ken WA2LBI On Fri, Jan 13, 2012 at 11:08, Garey Barrell <k4...@mindspring.com> wrote: > Hi Greg - > > You ever get that T-4X(?) running?? > > Those type of control switches were typically used to turn equipment on > and off, pulling 'OUT' to turn the gear 'ON'. So Drake's implementation > makes sense from that standpoint. That said, I too have trouble keeping it > straight, even with it printed right there on the panel!! :-) > > > 73, Garey - K4OAH > Glen Allen, VA > > Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line > and TR-4/C Service Supplement CDs > <www.k4oah.com> > > > Greg Roecker wrote: > >> Of all the ham gear I've owned and operated, the position of the ALC >> switch on my L-4B for 'standby / operate' seems the most counter-intuitive >> function to me - and one I screw up more times than I care to admit. From >> just a human factors perspective, pushing the switch in would logically >> mean 'on' or 'in-line', and pulling it out would mean 'off' or >> 'off-line'....when it fact it's the other way around. >> >> You can train dogs to do tricks....but I think I'm just too thick to >> learn this one! >> >> Thanks for the insight Garey. >> >> 73, >> >> Greg Roecker/n4osj >> Roswell, GA. >> >> -----Original Message----- From: Garey Barrell >> Sent: Friday, January 13, 2012 10:01 AM >> To: m coffey >> Cc: drakelist@zerobeat.net >> Subject: Re: [Drakelist] L4 vs. L4B >> >> Mike - >> >> Couple of things. >> >> 1. The L-4 never was sold with 4-400s. I assume you mean 3-400Zs. >> >> 2. Electrically, yes, you can replace the 3-400s with 3-500Zs. The >> problem is that the '500s are a >> little taller and won't fit in some of the chimneys Drake supplied. >> There really isn't any reason >> to replace 'good' 3-400s with 3-500s as long as you stay within the >> original power specs. This is >> about the limit of the power supply anyway. Yes, you can get close to >> today's legal limit, if you >> really need that one quarter of an S-Unit increase. >> >> The main 'significant' difference between the two is that the "B" moved >> the ALC level control from >> the rear panel, and made it a 'push-pull' switch control to put the >> amplifier in standby. Pushing >> the knob "IN" takes the amplifier off line without turning it off. With >> the L-4, you have to switch >> the AC power off to bypass the amplifier. The 3-400/500Zs are 'instant >> on' tubes so not an >> operating problem, but you could argue about turning the amp on and off >> multiple times. >> >> 73, Garey - K4OAH >> Glen Allen, VA >> >> Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line >> and TR-4/C Service Supplement CDs >> <www.k4oah.com> >> >> >> m coffey wrote: >> >>> Can anyone tell me the difference between the L4 and L4B ? Can one >>> replace the 4-400s with 3-500s? Mike >>> >> >> >> > ______________________________**_________________ > Drakelist mailing list > Drakelist@zerobeat.net > http://mailman.zerobeat.net/**mailman/listinfo/drakelist<http://mailman.zerobeat.net/mailman/listinfo/drakelist> >
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