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G0FTD > SAILOR 23.02.05 02:14l 66 Lines 2602 Bytes #999 (0) @ WW
BID : 139603G0FTD
Read: GUEST
Subj: Sailor marine radio's ?
Path: DB0FHN<DB0RGB<DB0MRW<DB0WUE<DK0WUE<7M3TJZ<HG8LXL<CX2SA<WU3V<GB7CIP<
GB7SXE
Sent: 050222/2112Z @:GB7SXE.#38.GBR.EU #:22767 [Hastings] FBB7.00i $:139603G0FT
From: G0FTD@GB7SXE.#38.GBR.EU
To : SAILOR@WW
I recently acquired some marine radio equipment from a ship having a refit
and as such have a few questions to ask.
* The 400 watt transmitter (a Sailor T2031) is specified as operating
in the J3E mode (ssb) as well as H3E (ssb plus full carrier) and R3E
(ssb with reduced/variable carrier). The question is why are the latter
two modes used ?
Was it purely for saving bandwidth on the bands or to enable (as a halfway
house) the older AM receivers to resolve the ssb on an older AM receiver ?
(I also got the H225 dummy load and antenna switch and even the original
fibreglass antenna with it!)
* The transmitter came with a receiver but only a Sailor Type R105
watch keeping receiver only for 2182Khz. The question is was it normal
practice on a ship to only have the tx/rx combination only for emergency
use and whence a cheaper single channel receiver fitted instead of
a receiver that covers the whole frequency range of the transmitter ?
* The watch keeping receiver appears to have a timer on it. Does this
receiver automatically switch on for 3 mins past the hour and for 3min
on the half hour (the times I've always understood as being prescribed
listening periods for emergency traffic) ?
* What is the date of this equipment ? I reckon it was c1971 when the ship
was built.
* And curiosity asks how much this stuff cost in their day as well as
what it's worth these days [I'm not parting with mine, I intend to use
it one day on 160/80m!].
All the equipment is in PRISTINE condition, I'm even thinking of mounting
on the shack wall as it was intended to be used ;-)
What I find a bit worrying is that there must be thousands of ships that
get re fitted and this equipment just goes in the trash to be crushed :-(
I have looked at the Sailor web site but I didn't find anything of use.
In fact all it did was confirm what the ships skipper told me - that
the use of radio's in the traditional fashion really is obsolete - it's
all done by Iridium and sat phones with a laptop+pcmcia card trx !
Oh well at least here in europe we don't suffer from any fishfone QRM
on the LF bands anymore.
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
³ 73 - Andy ³
³ G0FTD ³
³ Whitstable, Kent ³
³ Winpack-AGW ³
³ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³
³ ³ Û ³ ³
ÀÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÙ
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