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11
Antennas / Re: Magnetic antenna query
Last post by gil - November 11, 2019, 05:05:57 pm
Not very clear, but it does explain it somewhat. Very little electric field, but no doubt not zero, or there would be no RF produced, as far as I understand it. Interestingly mag loops can have a few thousand volts at the capacitor... That somewhat contradicts the statement.

Gil.
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General Discussion / Re: PLEASE READ! Welcome to Ra...
Last post by gil - November 11, 2019, 05:01:03 pm
Welcome aboard!

Gil.
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Military Radios / Re: The UK PRC 316 / A-16
Last post by gil - November 11, 2019, 05:00:04 pm
I once saw one one Ebay, untested, almost bought it, but it was about $500...

Gil.
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General Discussion / Re: Suggestion for new Forum t...
Last post by gil - November 11, 2019, 04:58:52 pm
Hi, sure, if you will be the moderator...

Gil.
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General Discussion / Suggestion for new Forum topic...
Last post by daedalus - November 10, 2019, 10:55:14 am
Has a dedicated forum topic of SDR been discussed ? From a prepping perspective its got many aspects and seeing as it is most likely the future of transceivers it could be interesting to look at it separately.
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General Discussion / SDR vs superhet : after disast...
Last post by daedalus - November 10, 2019, 12:41:48 am
It definitely looks like the future of transceivers is SDR, this got me thinking: if there is a disaster with long term effects then the key aspects of transmission equipment will likely be :

1) reliability
2) repairability
3) durability
4) replacement parts
5) low power consumption
6) adaptability
7) portability

I would say 1-4 favours the superhet and 5-7 favours the SDR, although with 5) power consumption the laptop/tablet power consumption may need to be taken into account

So this probably means one of each , say an FT-817ND and one of the new SDR that is self contained (QSX, IC-705 TX-500)

That got me thinking, how best to use two transceivers (i.e. a superhet and an SDR) and I began to wonder, would it be possible to reconfigure the SDR to act as a power amplifier for the FT-817 ? or even to act as a digital modes device for the FT-817

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Military Radios / Re: The UK PRC 316 / A-16
Last post by Sparks - November 09, 2019, 09:36:21 pm
Additional information in the Wikipedia article about the British Clansman military radio system:

https://en.wikipedia.org/wiki/Clansman_(military_radio)#UK/PRC_316


QuoteClansman HF radio sets
UK/PRC 316
A late introduction to the Larkspur range, its original designation was A16 Lightweight HF Radio Station. Deployed in tropical or high temperature climates, it was powered by either a standard 12V battery that connected directly to the set or if issued, a Leclanche Battery that connected directly to the set. It was compatible with most D10 or R4 copper stranded antenna systems that were fielded at that time, examples being the Shirley, Jamaica, Half Jamaica and Yagi.

Despite not being of the Clansman family, its late introduction to service coupled with its Clansman equivalent, the PRC/RT320 not being ready, meant the PRC 316 survived for just over five years after Clansman was introduced. Once the PRC/RT320 was completed and fully fielded, the PRC 316 was rapidly withdrawn. Another reason cited for its retention was that it was relatively easy to operate and was inter-operable with the other HF Radios in the Clansman family.
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Military Radios / Re: The UK PRC 316 / A-16
Last post by Sparks - November 09, 2019, 09:20:34 pm
This radio has been mentioned once before in this forum, with reference to the same PDF:

Quote from: RadioRay on September 14, 2018, 02:55:05 pm
when I was working in Kuching, Sarawak, Malaysia , I picked-up a locally published book; "SAS In Malaya" and, like you said, Gil - the jungle warfare people did amazing things.  They Malay campaign drove the development of a far better radio;  the PRC-316 and STRONG reliance on NVIS.  Here is a link to an interesting article from your mates at VMARS, describing it's use.

http://www.vmarsmanuals.co.uk/newsletter_articles/prc316.pdf

>RadioRay ..._ ._

I wanted you to see the beauty of this one. And in that PDF you can see the PRC 316 and accessories.

I wonder if you can buy this radio somewhere?
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Military Radios / Re: The UK PRC 316 / A-16
Last post by Sparks - November 09, 2019, 09:06:23 pm
I found this photo in the public Facebook group of the Norwegian Radio History Society:

https://www.facebook.com/photo.php?fbid=2431146277159756&set=gm.1611087139030995

Information about this military transceiver in this PDF:

http://www.vmarsmanuals.co.uk/newsletter_articles/prc316.pdf


QuoteThe UK PRC 316 / A-16
by John Teague, G3GTJ

INTRODUCTION

This paper describes the PRC 316 and is an expanded version of an earlier contribution to the Centre for the History of Defence Electronics (CHiDE) colloquium on Military Communications, held in September 1999.

The radio was designed and developed for the British Army in the mid-sixties by the Signals Research & Development Establishment (SRDE) at Christchurch. Designated X3145 in the experimental phase it became "Station Radio A-16"; later it was given the Clansman style designation of "UK/PRC 316", which is how it was generally known in service.

To quote from the November 1968 edition of the User Handbook: "The lightweight HF patrol radio PRC 316 is a compact, simple to operate transmitter-receiver developed primarily for use at the halt. It provides 45 crystal controlled communication channels in the band 2 - 7MHz . . . . (It) is intended to operate at ranges up to about 800 km using CW."
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Military Radios / The UK PRC 316 / A-16
Last post by Sparks - November 09, 2019, 08:52:43 pm
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