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Total 9 documents matching your query.

1. Re: [TenTec] emergency back up power (score: 1)
Author: "Eric F. Richards" <efricha@dim.com>
Date: Mon, 05 Mar 2007 02:44:01 -0700
My array of batteries can provide about 1500 amp hours, provided that the discharge rate is kept reasonable. No discount sources that I know of. That's because most batteries that have seen use have
/archives//html/TenTec/2007-03/msg00064.html (13,103 bytes)

2. Re: [TenTec] emergency back up power (score: 1)
Author: "Eric F. Richards" <efricha@dim.com>
Date: Mon, 05 Mar 2007 18:31:23 -0700
At a cost of anywhere up to 50% of the battery's power from the inefficiency of the inverter and the linear Tentec power supply. Most inverters today -- including a properly designed sine-wave invert
/archives//html/TenTec/2007-03/msg00083.html (11,155 bytes)

3. Re: [TenTec] emergency back up power (score: 1)
Author: "Eric F. Richards" <efricha@dim.com>
Date: Mon, 05 Mar 2007 18:38:06 -0700
Well, what can I say? So far my milage has been pretty good. :-) I sank the most money into the PV panels and inverter. There are so-called "sine wave" inverters that put out a nasty stepped waveform
/archives//html/TenTec/2007-03/msg00085.html (16,350 bytes)

4. Re: [TenTec] emergency back up power (score: 1)
Author: "Eric F. Richards" <efricha@dim.com>
Date: Mon, 05 Mar 2007 19:36:27 -0700
An 85% efficient switching supply with that inverter gets you 72% overall. Nearly 30% losses. A common linear supply isn't that efficient with the unregulated voltage over 20 volts. At best 65% effi
/archives//html/TenTec/2007-03/msg00087.html (11,030 bytes)

5. Re: [TenTec] SDR 1K (score: 1)
Author: "Eric F. Richards" <efricha@dim.com>
Date: Fri, 21 Apr 2006 20:34:12 -0600
I can't speak to the SDR 1K because I don't have one. However, I was an early adopter of a much less capable radio, the WinRadio G303i. It's an SDR that brings an 11kHz IF into your sound card and do
/archives//html/TenTec/2006-04/msg00656.html (9,840 bytes)

6. Re: [TenTec] S meter readings (score: 1)
Author: "Eric F. Richards" <efricha@dim.com>
Date: Wed, 28 Dec 2005 18:36:18 -0700
It's all about accuracy and precision -- both at the same time. Now, if you *really* care, you'll calibrate your system to read in Janskys. *Then* you can compare results to each other. (1 Jy= 1E-26
/archives//html/TenTec/2005-12/msg00913.html (8,157 bytes)

7. Re: [TenTec] S meter readings (score: 1)
Author: "Eric F. Richards" <efricha@dim.com>
Date: Wed, 28 Dec 2005 23:45:26 -0700
hmmm... I thought it was 1x10^-26 watts per meter squared per hz = 1 Jy, but I'm quite old and stupid now, so you're probably right. Best for y2k+6 va7vv I think that's the same thing as I said but w
/archives//html/TenTec/2005-12/msg00917.html (8,650 bytes)

8. [TenTec] RX-340 sale value (score: 1)
Author: "Eric F. Richards" <efricha@dim.com>
Date: Mon, 12 Sep 2005 07:32:08 -0600
Greetings, all... I have a family emergency and have been regretfully forced to sell my RX-340. I am wondering what a reasonable price is for it. I need to sell it in a big hurry but selling it for t
/archives//html/TenTec/2005-09/msg00175.html (7,188 bytes)

9. [TenTec] Orion II ad in QST (score: 1)
Author: "Eric F. Richards" <efricha@dim.com>
Date: Sun, 18 Sep 2005 09:57:39 -0600
I'm risking my butt by stepping into this one, but, what the hey... Am I understanding this right? People are getting upset because the ad is showing something that isn't an Orion II? Take another lo
/archives//html/TenTec/2005-09/msg00260.html (7,686 bytes)

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