[Lf] More Field Strength Meters]

[Andre' Kesteloot]

"Lawrence R. Ware" wrote:

> Gentlemen,
>
> A few you may know me, I run a hobby business which includes some
> refurbing, repair and calibration of older test equipment.
>
> I've been an active boatanchor collector for some time now and have
> published several articles about WWII vintage National radios. [1]
> I'm somewhat active over on boatanchors at theporch.com, but due to
> work related issues have not been real active for quite a while now.
>
> I been lurking on this list for several years now and enjoy
> reading the mail here.
>
> For those of you who are serious about measuring signal levels, and
> are willing to do your own antenna calculations, or build the fixtures
> to calibrate the antennas:
>
> I would strongly recommend you look into the HP 312 series of
> equipment. The HP 312A and the -C (with telco video type connectors)
> are quite common on the surplus market with prices for working units
> running under $100.
>
> Frequency response runs from 1KHz to about 18Mhz.
> Bandwidth selectable from 3100 to 200 Hz.
> Amplitude (calibrated) range from -120 dBm to +23 dBm (50 ohms).
> Modes include, AM, LSB, USB and Beat (CW).
>
> The manuals are quite large, the calibration procedures long, but
> not that complex and do not require a ton of odd equipment.
>
> IMO: These are the best FSL (Frequency selective levelmeters) made,
> with mostly gold circuit boards connectors and switch contacts.
> They *are* large and quite heavy, and need AC power, but you can't have
> everything....
>
> [1] I'm working on a book; the history of the National Coil Catacomb
> radios.
>
> -Larry
>
> # Wayward Electronics, Inc.
> # Larry's Home for Wayward Test Equipment & Old Radios (tm)
> # P.O. Box 526, Goldenrod, Florida  32733-0526
> # Fluke, HP, and Tek service available when I'm in the mood.
> # National Radio Company, Inc. parts and service available more often... :-)
> # larry at waywardhome.com     - Orlando area, FL -
> # 407.679.1597
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