245 lines
15 KiB
Plaintext
245 lines
15 KiB
Plaintext
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A Journey Through My Scanning Triumphs And Disasters
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By Nigel Ballard 28 Maxwell Road Winton Bournemouth
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Dorset BH9 1DL ENGLAND. 20 July 1990
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It all started many years ago, I was on vacation, bored to the back
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teeth, and in need of spending some serious cash. As a licensed radio
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amateur (G1HOI) I duly read all the obligatory monthly publications. My
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eyes were drawn to the JIL-SX200N scanner. It is fair to say that before
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this time I had no idea what a scanner was, or what possible use and
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enjoyment one could gain from a radio WITHOUT A MICROPHONE!
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Hopping into my TR-7 (and what a dog of a car that was!) I raced to the
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Shop, safe in the knowledge that I would return several quid lighter. The
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salesman clearly had no more idea than I did as to how one should drive
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a scanner, but regardless of this I was drawn by all the lights and
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buttons. I also purchased an eight element discone (yet another dog).
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Upon arriving home I assembled the discone and placed it in the loft
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(bad move), reasonably thick cable was routed through a ridiculously
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large hole in my lounge ceiling down to where the JIL sat. Connections
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were made, batteries inserted and power applied. Now what? Reluctantly I
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sat down and read the manual, Not much wiser I turned it on, pressed any
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button that looked like it had a purpose and waited to be amazed and
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enthralled by what I was surely going to hear. And what did I hear that
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would shake a nation to it's feet? BUGGER ALL that's what!
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In the preceding weeks I learned that I was a scanner pioneer, not much
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consolation to a chap ready to hoover in the world. Books, there
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weren't any, frequency listings, none of them either. I now had the
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definite impression that the shop had screwed me. But wait, a fisherman
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friend produced a list of marine frequencies. The first eighteen (It
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only had 18 memories) locations were entered in, and within a minute
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human voices emanated from the scanner, SUCCESS I thought. Boy this just
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has to be the most fun a boy can have without getting a girl into
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trouble. Laugh if you want, but in those days, anything heard not in the
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amateur bands was purely luck, and not judgement.
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Take two, the scanner had a search facility, so I entered a random pair
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of lower and upper frequencies. Within an hour or so my notebook was
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filling up with frequencies and cryptic notes, 165.4125 'sounds like a
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bus' etc etc. The only way I thought to tackle this problem was to buy a
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book and write in every frequency in 12.5KHz steps. This was done and
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from that point on, every voice heard was logged. What started out as a
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nightmare of a task, actually ended up as the best thing I ever did. As
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trunking was years away, if you heard a taxi company on a certain
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frequency on a monday, you could be damn sure the same taxi company
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would be in the same place on subsequent days. So the log book that
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started out completely empty, was now starting to have more entries than
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omissions.
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I was certain that lot's of traffic unreadable because it was in the
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noise, could be extracted if I just improved my set-up. Firstly, the
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discone went on the chimney breast high above the roof apex. The
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difference was quite staggering. I swapped my reasonable coax for the
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best uhf rated stuff my wallet could afford. No difference was noted
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on the vhf areas, but uhf was really starting to liven up. Traffic that
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was once completely invisible to the scanner could now be copied.
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Ploughing through yet another radio magazine, I saw a new advert for the
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AOR-2001, Authority On Radio impressed the hell out of me. Twenty
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memories (well 20 is better than 18) and NO GAPS. From my knowledge
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gained in the field of amateur radio I could see the sensitivity figures
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quoted for 12DB Sinad just blew the JIL out of the ball park. Into the
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car (a much better 3.0 Ford capri this time) down to the shop, and out with
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the wallet. I raced home and expected to be amazed.
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And I was, brother what a front end, alright the tactile keys were rubbish
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and the box looked like a Fisher Price reject (no insult intended), but
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who cares, it's no good having a flashy box if it is as deaf as a post.
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And like before, once illusive stations were logged in the now invaluable
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book. Friends started to get hooked, two rushed out and bought the 2001,
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and the league of scanner fanatics was duly formed. Just like swapping
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football cards, we would trade interesting new discoveries.
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A passer by spotted the discone (a dead giveaway) rang my door, said he was
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a radio engineer and a scanner buff, could we compare notes? Well just you
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try and stop me I said. After several coffee's and tall stories about the
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one that got away he left, but not before imparting his vital knowledge in
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the general direction of my log book. About this time I sold all my amateur
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radio and went QRT. No longer was I interested in getting a QSL from
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Woga-Woga on 10 milliwatts. I was now in touch with the real world, and
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most definatly hooked. Why bother reading the local evening paper
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telling me what happened yesterday, with a scanner I could get the whole
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story TODAY! The local paper was duly cancelled.
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Yet another radio publication showed off a new sixteen element discone,
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the sales blurb said why put up with all those nulls apparent on eight
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element discones, this made sense so I bought one, and yes the monitoring
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post got even better. The following months issue showed that the
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Japanese giant's Yaesu were soon to release their first scanner called the
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FRG-9600, the picture looked mouth watering, a vfo (what a treat) all
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modes including ACSB (later found to be worthless sales hype), a signal
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meter, fluorescent display and to top it off a metal box. The next day
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off I headed up the road to the approved dealers. That very day the
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first batch had arrived, as I walked into the shop, the sales staff were
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all huddled around the first one out of the box. Needless to say I
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bought the second one. Back home I realised that all the features and
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all the external build quality did not make up for a really deaf front
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end, and the FRG-9600 really excelled in this area. The 2001 on a
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straight comparison test would make the Yaesu look very sick indeed. I
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returned to the shop some weeks later where the engineers made the first
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of many modifications in an attempt to get the front end up to a
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reasonable spec. One engineer confided that the FRG-9600 only evolved as
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an inquisitive engineer in Tokyo wanted to see what could be gained from
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modifying a television tuner front end. Yes you guessed it, an FRG-9600
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is what can be gained. I was less than happy and it soon found a new
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home. No marks to the electronics team, but full marks to the external
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design team. You never realise how bad your scanner is until you get to
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operate a better one.
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AOR obviously heard my cries as the press were now muttering about an
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improved model with vfo (of sorts), signal meter and coverage up to
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1300 MHz. So I asked someone in the know, who would I want to listen
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to that high up? The answer came back that the fledgeling cellular
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telephone network were at 905 MHz for a start. Enough said, I wanted
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one, In fact I just had to have one. Mainly because I hated all those
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posers driving about with the steering wheel in one hand and a car phone
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in the other. It was a long wait, as AOR are well known for releasing
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the birth weight long before the baby is born (ala 3000). We will all
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kindly forget the fact that I too now have a car phone, so it's now
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alright to pose about isn't it?
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The day arrived when the AOR dealer said my long awaited 2002 had
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arrived, was it worth the wait? Of course it was. What a great little
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performer. The cellular literally boomed through. Whether mobile or at
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home, ALL traffic within a reasonable distance was mine. A good friend
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developed a computer controller for the 2002, and when enabled allowed
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all manner of fancy tricks to be achieved.
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Now enter another giant from the orient, ICOM. A picture appeared in the
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press showing the forthcoming ICR-7000, what a beast. A huge VFO, lots of
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memories etc. This time the cash was not readily available so interest
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free credit was arranged, and as soon as they arrived I had one. Well
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what can I say three years on. I still have my original one, the only
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thing that has gone is the signal meter display bulb. It has been on for
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hundreds and hundreds of hours. The AOR 2002 beats it for sensitivity
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but nothing else. If I am not hunting for really distant traffic then
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the ICOM has my vote. It is really the ease with which the thing can be
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driven. It is easy on the eyes, and has the look of a really serious
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piece of monitoring equipment. Enough said on the 7000 I think.
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Moving right along.
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A friend with contacts in Japan started giving me scanning magazines
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bought in Tokyo. Although the text was no use, the pictures however
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showed that (a) they had new models about ten months before the UK or
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USA saw them, and (B) they were much cheaper. A product caught my eye,
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namely the STANDARD AX-700. Nothing unusual in it except it had a large
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yellow LCD panadaptor built in, and with this one could visually see rf
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activity at up to half a meg either side of the channel you were
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currently sat on. Some weeks later it arrived, I was tempted to lift the
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lid, oh no it had that same tv front end tuner in it. Damn, this is
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going to perform like the 9600. Well to give it it's due there is not
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much to compare. What the Yaesu loses in sensitivity, the Standard gains
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in allowing every strong signal within about ten megs of where you are
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to come howling through it's very wide front end. Try it on a log
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periodic and you end up switching off and taking the mut for a walk.
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This is a real shame as anyone with experience of professional
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monitoring equipment, i.e. RACAL, WATKINS JOHNSON etc will tell you that
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a panadaptor linked to a good receiver is absolutely invaluable.
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Alright the ICOM does not have the hottest front end , but what comes
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through it's generous speaker is crisp, clear and above all usually only
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traffic transmitted on the currently monitored channel.
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As to handheld scanners, I bought a selection mainly from the USA. The
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first purchase was a Fairmate that boasted full coverage of the 900 MHz
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region. It arrived but not before the British customs had taken a good
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look at it. Yes it covered all the interesting areas, and unlike any
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other scanner destined for the USA market, it had user selectable
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mode's. Whereas in the USA everybody uses nfm except for aircraft. In
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the UK however, there are a great many interesting users still chatting
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on am. It did the job, but just like the squelch circuit on the AR-900
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it had a mind of it's own. Birdies it had plenty, but regardless it
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impressed the hell out of everybody over here. I even took a bet with a
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cellular dealer who insisted that their network was totally secure. He
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lifted the phone and dialled a friend, within a few seconds the Fairmate
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locked on to his channel, needless to say he lost the bet.
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Next on the list of purchases was the Yupiteru MVT-5000. My contact in
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Japan brought two straight from the factory. When he flew back, I rushed
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over with the cash safe in the knowledge that I had the second unit in the
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country. The MVT goes up to 1300 MHz and resolves NFM/AM, it's features
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include a very high first i.f., battery saver, high scan rate and ten user
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selectable search banks. It's performance is superb, with just the
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supplied telescopic whip I could just make out the US Navy satellite
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comms on 261 MHz. Needless to say I still own it, and apart from the new
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Icom R-1 just in the shops over here, there has been nothing to touch
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it. UK dealers took nine months getting supplies, and in the process had it
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renamed as the JUPITER TWO.
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After being told for almost two years that the AOR-3000 would be in the
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shops any day. Last week the first units became available to the general
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public. The delay was twofold. Firstly, the initial batch were fraught
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with technical problems. And secondly, when sorted out, the first
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deliveries went straight to the British Ministry Of Defence who realised
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it's great potential. I bought one three days ago, and as yet cannot
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make a judgement. Already the processor has completely locked up twice,
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rendering all my programming useless, as a reset clears any and all
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memories. The coverage is super wide, 100KHz straight through to 2036.00
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MHz, no gaps and all modes. It is still in that poxy little plastic box
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with buttons designed for only the smallest of fingers. I have been
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really interested in it's HF capabilities, SSB resolution is great, no
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mickey mouse voices or drift. With the 3000 connected to a uhf antenna I
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can easily hear ANDY (Andrews airforce base in the USA). When I have
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had a few weeks use with it, I will send up a small revue to aid
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prospective purchasers.
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As it stands now, I have seven antennas on the roof, a log periodic and
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rotator waiting to go up, an assortment of pre-amps. H-100 super low loss
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coax running all over the place. four scanners online. And most important
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of all, a compendium of loggings for almost every user in my area. I
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think that after eight years I have things pretty well covered. If any
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radio keys up in my area and talks in plain speech (not DVP) between
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100KHz and 2036MHz then in theory I have the capability to receive their
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transmission.
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What is my idea of a perfect scanner? Well it would have to be the circuitry
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of the AOR-3000 in a box made by the Yaesu design team, and incorporating
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the panadaptor of the AX-700. If this beast were ever to appear at the right
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price, then I think I could be persuaded to sell all the others and just rely
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on this one imaginary unit.
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As to the law in the UK, the funny thing is that scanning anything
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outside the amateur, CB or broadcast bands is completely illegal. If
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caught monitoring anything outside these areas then a hefty fine and full
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confiscation of all your equipment is in order. Boy, you guys in the
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states have it easy. The police wrongly think that to own a scanner MUST
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mean you have criminal intent. Strange days indeed!
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We are now at the present day. When time permits I will write another
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article on ways the experts go about signal acquisition. Many of these
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methods can be employed by YOU to great effect. I apologise in advance
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if you found this article a bit rambling, but it is written at work and
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time is pressing. In a future article I will also cover different antenna
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types. If you have any comments regarding this article,please leave me a
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message on this BBS, and I will be sure to respond.
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Best Regards and in the words of the USAF RC-135 (flying recon aircraft)
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IN GOD WE TRUST-ALL OTHERS WE MONITOR. I could not have put it better.
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