Go to your trash transfer station and root through the consumer electronics. A lot of stereos, tv cable converters and dvrs have 12v power supplies you can lift out on separate boards. If the cans aren't bulged they are probably ok. Same goes for junk microwaves, most of which have identical low dc voltage supplies - separate from the hv that goes to the magnetron. They come complete with bypass caps for the AC line current. And 12v relays too. You can also get buckets of 12v coil relays from washers and dryers. If all else fails most goodwill stores have a misc cables and wall warts section where you can get all the dc voltages imaginable as wall chargers for a buck or two. HTH
Sent from my Galaxy Tab® A -------- Original message --------From: [email protected] Date: 11/16/17 12:00 PM (GMT-05:00) To: [email protected] Subject: Topband Digest, Vol 179, Issue 16 Send Topband mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit http://lists.contesting.com/mailman/listinfo/topband or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of Topband digest..." Today's Topics: 1. Vacuum Relay Power Supply (James Denneny) 2. Re: Propagation (Mike Waters) 3. Re: Propagation (Yuri Blanarovich) ---------------------------------------------------------------------- Message: 1 Date: Wed, 15 Nov 2017 09:36:40 -0800 From: "James Denneny" <[email protected]> To: <[email protected]> Subject: Topband: Vacuum Relay Power Supply Message-ID: <[email protected]> Content-Type: text/plain; charset="us-ascii" Amazon has many different types ranging from wall warts to dedicated heavy duty supplies. I would think the wall wart would be enough to key relay and they are inexpensive. 73, Jim K7EG ------------------------------ Message: 2 Date: Wed, 15 Nov 2017 12:31:29 -0600 From: Mike Waters <[email protected]> To: Craig Clark <[email protected]> Cc: topband <[email protected]> Subject: Re: Topband: Propagation Message-ID: <CA+FxYXgjrwz2UHuWTE=XpRLubWuJs=8O9v1mwQ=ghx+gsg4...@mail.gmail.com> Content-Type: text/plain; charset="UTF-8" Great question, Craig! I asked this question a few months ago here: ham.stackexchange.com/questions/8940/what-is-the-cause-of-this-unusually-long-period-of-terrible-hf-band-conditions It is NOT what the answers there claim. I have done extensive research on this. And when I get the time and motivation again, I'll share what I have found. 73, Mike www.w0btu.com On Nov 15, 2017 7:29 AM, "Craig Clark" <[email protected]> wrote: So, what IS going on? Why has propagation on Top Band (and other bands) been so poor? An inquiring mind would like some "ed-u-macation." I missed K9LA's presentation at W9DXCC this year. Craig Clark K1QX ------------------------------ Message: 3 Date: Wed, 15 Nov 2017 15:09:28 -0500 (EST) From: Yuri Blanarovich <[email protected]> To: "[email protected]" <[email protected]> Cc: Craig Clark <[email protected]> Subject: Re: Topband: Propagation Message-ID: <[email protected]> Content-Type: text/plain; charset=UTF-8; format=flowed; delsp=no To put it simple terms: Sun(spot) activity is low, atmo/ionosphere layers height has shrunk. RF mirrors/ducts are?lower, propagation is squished (sucks). I remember 1958 when I could work the whole world at the same time with 10W?Wehrmacht tank TX and (Windom) piece of wire for 24 hours?on 10m! Highest sunspot activity in my lifetime, never repeated since. 73 Yuri, K3BU/KH6 ? ? ?On Wed, Nov 15, 2017 at 08:28 AM, Craig Clark wrote: ? ?> So, what IS going on? Why has propagation on Top Band (and other bands) been > so poor? > An inquiring mind would like some "ed-u-macation." I missed K9LA's > presentation > at W9DXCC this year. > > Craig Clark K1QX > > > > _________________ > Topband Reflector Archives - http://www.contesting.com/_topband > ------------------------------ Subject: Digest Footer _______________________________________________ Topband mailing list [email protected] http://lists.contesting.com/mailman/listinfo/topband ------------------------------ End of Topband Digest, Vol 179, Issue 16 **************************************** _________________ Topband Reflector Archives - http://www.contesting.com/_topband
