[MAMS] Using Toshiba 3456 PA's in Rover

[MARK K8MD]

I think you have the smaller amp made by  Toshiba. I have the  50W version I think its a UM2386. When I got my amp it said to power it with 13V or maybe 13.8V. After a short time the amp blew. So I ordered another one found he changed it to 12.5VDC. So lowered Voltage to 12.5V without an incident. I checked power a couple months ago and saw 45W, plenty for the band. This happened a few years ago when Pyro-joe started offering this amp on e-bay. Mark, K8MD

--- On Wed, 11/23/11, W9SNR - Jim <w9snr at comcast.net> wrote:

From: W9SNR - Jim <w9snr at comcast.net>
Subject: [MAMS] Using Toshiba 3456 PA's in Rover
To: "NE8I" <l10368r1 at yahoo.com>
Cc: "Mid-America Microwave Society" <mams at mailman.qth.net>
Date: Wednesday, November 23, 2011, 10:36 PM

Lloyd,

I have one of the Toshiba 20 W 3456 PAs which I plan to use for a new rover station.  I wonder if you have had any experience powering the Toshiba PA from a car's "13 V" electrical system.  I hear that these PAs are rather finicky about supply voltage, so I'm looking for any suggestions on how to avoid blowing it up.  I've only got one PA, and the prospects for getting another one don't look too good.

73 - Jim
W9SNR
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