[Milsurplus] [ARC5] ATD Project: "Correct Receiver?"

[Ray Fantini]

One of my favorites would be the AN/URC-7 in terms of weight, uselessness in today’s world and difficulty in getting into operation being crystal control on the transmitter and receiver.  Not to mention the only couple URC-7 transceivers that I have seen were designed to run on 120 Volts DC only!  At 165 Lbs. developing 25 watts that works out to 6.6 pounds per watt. The ATD assuming 125 Lbs. with dynamotor developing 40 watts is just a light weight at 3.125 pounds per watt. The AN/WRA-3 would be a whopping 40.4 pounds per watt but don’t see that as anything but a exciter, maybe paired with something like a AN/WRT-1 transmitter weighing in at 1030 Lbs. with the AN/WRA-3 exciter at 607 Lbs. is a total weight of 1637 Lbs. for 500 watts for a figure of around 3.2 Lbs. per watt in CW but a respectable figure of a little over 13 Lbs. per watt in AM.
Think the Navy has the market cornered when it comes to size and weight. A note, the Johnson Viking 2 produced around the same time developed around 135 watts at just under 80 Lbs. for a figure of 0.6 Lbs. per watt.

Ray F/KA3EKH



From: milsurplus-bounces at mailman.qth.net [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of Nick England
Sent: Tuesday, August 01, 2017 9:34 AM
To: Hubert Miller <kargo_cult at msn.com>; Mike Morrow <kk5f at arrl.net>; WF2U <wf2u at ws19ops.com>
Cc: ARC-5 list <arc5 at mailman.qth.net>; milsurplus at mailman.qth.net
Subject: Re: [Milsurplus] [ARC5] ATD Project: "Correct Receiver?"

My candidate is the AN/WRA-3
607 lbs, 15w output, CW only

http://www.navy-radio.com/xmtrs/wra3-spec.pdf

Cheers
Nick

On Tue, Aug 1, 2017 at 1:57 AM Hubert Miller <kargo_cult at msn.com<mailto:kargo_cult at msn.com>> wrote:
C'mon, at around 100+ lbs. per complete installation, for around  40W out, that's not really that bad, is it? I cd probably come up with serious contenders. -H



Sent from my Verizon Wireless 4G LTE smartphone
- Original message --------
>..... Incidentally, I think  it is one of the heaviest transmitters watt per pound, with its 40 W output.
73, Meir WF2U

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Nick England K4NYW
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