Ham international jumbo

A forum for the discussion of matters of a technical nature. All such activities are undertaken at the readers discretion and own risk. If you don't know what you are doing, don't blame us if it all goes wrong!
bigroy
Regular
Regular
Posts: 11
Joined: 21 Aug 2014, 12:19
Call Sign: bigroy

Re: Ham international jumbo

Post by bigroy »

siskin wrote:
bigpimp347 wrote:if thats a genuine stealth version i WANT IT..!!!!
thats one i don't have in my collection and been after a genuine one for years..!!
hi ive got 2 jumbos here how do you tell if its a stealth version
i'd even swap for a stock one that works fine..!!

oh 10kc out on every channel..
shouldn't be i'm sure i've seen this fault, but need to remember why..

the resistor getting hot, yup thats because they don't use a 5v regulator on the HAM marked Eprom.
thats just a period botch..
iv tryed to post a few piocs but its impossable on an ipad i think iv got your face book details if im right ill send some internal pics
bigroy
Regular
Regular
Posts: 11
Joined: 21 Aug 2014, 12:19
Call Sign: bigroy

Re: Ham international jumbo

Post by bigroy »

hi ive got 2 jumbos here how do you tell if its a stealth version
bigroy
Regular
Regular
Posts: 11
Joined: 21 Aug 2014, 12:19
Call Sign: bigroy

Re: Ham international jumbo

Post by bigroy »

hello 2who wants to fix my 2 jumbos for me any anybody
Cowthief
Banned
Banned
Posts: 136
Joined: 02 Aug 2014, 18:26
Call Sign: KA5PIU

Re: Ham international jumbo

Post by Cowthief »

Hello.

The Ham International "K" version is nothing more than a glorified 10 meter/CB radio that was produced for operation in Afghanistan and places like that, and they were supplied with this nifty suitcase it all went in.
A frequency counter was supplied, but there is NO difference!
Swan/Cubic did the same exact thing a few years ago.
https://forums.hamisland.net/showthread ... fca1c28eaf
So, why 27 MHz?
The idea was, and is, to provide a single band somewhat portable radio.
But, in Cuba, they hide full size satellite dish units inside water tanks!
They build radios, from scratch, and can build it into anything!
But, it was the Russians who were resourceful!
They built transverters into common radios.
You see, the Soviets were all about production, so radios were frequently sold new, that did not work!
You would have no choice but to have it repaired, your brand new radio!
Things like "Extended" FM band, for 88 to 108 MHz, were common.
A low power transmitter on the AM side was VERY common.
What they were used for? things like advertising black market goods.
This was the USSR of old, so a briefcase radio was nothing!
YOU could make a "spy" radio by simply mounting it inside something unexpected.
But, radios are now so small the point is moot.
Again, I saw the "k" model HRO radio a few years ago.
If that is the great spy radio, get a briefcase and put your radio in it, and you too have a "spy" radio!
Or, you can look at what the population in Cuba has been doing for years, not as spies, but want to watch US TV.
G0EHU
Regular
Regular
Posts: 59
Joined: 14 Sep 2012, 09:40
Call Sign: G0EHU
Location: Derbyshire

Re: Ham international jumbo

Post by G0EHU »

WTF is this guy on??
User avatar
cb4ever104
Legend
Legend
Posts: 6551
Joined: 28 Jul 2011, 21:26
Location: Alicante , España

Re: Ham international jumbo

Post by cb4ever104 »

G0EHU wrote:WTF is this guy on??
If you find out could you let us all know :)
30TM060
Paul aka "Sammy". (108) PY60 Old Paisley DX Group (RIP Rab Markie)
Ex GM0 , now EA5 .
Handle "Fortune Hunter" back in "the day"
Radios ....? Anything that says "TAIWAN R.O.C" on the back.
User avatar
cjay
Top Poster
Top Poster
Posts: 1775
Joined: 06 Jun 2013, 21:21
Call Sign: cjay
Location: Manchester
Contact:

Re: Ham international jumbo

Post by cjay »

cb4ever104 wrote:
G0EHU wrote:WTF is this guy on??
If you find out could you let us all know :)
So we can all avoid it.
Cowthief
Banned
Banned
Posts: 136
Joined: 02 Aug 2014, 18:26
Call Sign: KA5PIU

Re: Ham international jumbo

Post by Cowthief »

Hello.

The HRI Jumbo has nothing special in the EPROM.
http://www.cbtricks.com/radios/ham_inte ... /index.htm
And, almost everyone has tried to glorify some cheezy radio by calling it the "Military model" or "Secret Agent" model.
This is nothing but marketing.
Handic, the large ORANGE walkie talkie, was being marketed as the "Emergency" radio.
http://books.google.com/books?id=yW-2Go ... io&f=false
So, it is not that I am on anything, I have just seen a lot of "Marketing".
And, I can supply you with the standard EPROM load (USA), but this radio does have an "Offset" board for the UK, if fitted, otherwise it is the same radio as the US model, power supply is 220.
Pull the cover, it is a mobile radio in a fancy box.
If the UK board is NOT fitted, they are available, nothing but a crystal and trimmer cap and PIN diode.
Selecting the correct band provides the signal needed, no added switch.
And, they are cheap, around $15 US.
The 10 kHz off, sounds like the V ref and N= need to be checked.
If N= is 1 and not 0 for the first channel, it will act as if it is 10 kHz high, but it is only that the channel is "up" by one.
You can insert any value between 0 and 16 for N=, 0 to F, it is hex.
The processor has a lookup table, by adding extra references, you get the 3 bands.
With an offset board, you can get the off UK frequencies.
With the N= function, you can "fill in" the "missing" channels, all of this has been known for years.
You now have, not only the service manual, with a detailed schematic, but an explanation of how a CB radio is "fitted" for the UK, or German, or whatever, channels.
We call it the "Euro" board in the USA.
This is different from the "Channel" board, that adds 2 "extra" bands, this radio already has that.
There is NO sense in installing a "5 band" board, this radio will NOT tune that far, it will fall out of lock.
Thank you.
User avatar
cjay
Top Poster
Top Poster
Posts: 1775
Joined: 06 Jun 2013, 21:21
Call Sign: cjay
Location: Manchester
Contact:

Re: Ham international jumbo

Post by cjay »

Cowthief wrote:Hello.

The HRI Jumbo has nothing special in the EPROM.
'It is better to remain silent and be thought a fool than to open one's mouth and remove all doubt.'

Abraham Lincoln.

You, Sir, are a fool and have proven it.
User avatar
bigpimp347
Legend
Legend
Posts: 8792
Joined: 08 Aug 2009, 10:23
Location: J26 Nottingham

Re: Ham international jumbo

Post by bigpimp347 »

clearly admin must think this idiot is worthy of being on this forum for some reason,
shame he's making the forum look like it's full of idiots and allows pillocks on..!!

as for the Jumbo..
they allegedly didn't do a stealth version, although i have seen/heard of a couple.

mk1 PTBM059 (multimode 2) twin board version.
mk2 PTBM121 (concorde 2) one single board.
mk3 PTBM133 (multimode 3) smaller single board more bands.

a lot of the UK versions (modded for 'legal use and stamped' were the mk2 which for me seems the hardest to find..!!
I want to Die Asleep like my Grandad did,
Unlike his Passengers, Screaming and Shouting.!
wa10
Top Poster
Top Poster
Posts: 1346
Joined: 19 Feb 2008, 00:37

Re: Ham international jumbo

Post by wa10 »

stood too close to his stepup tranformer once too often, but not close enough to shut him up.
W8JI
"An antenna with a poor ground using few radials cannot have a support mast grounded to the radial common point (at least it shouldn't if designed properly) There is no exception to this!
User avatar
cjay
Top Poster
Top Poster
Posts: 1775
Joined: 06 Jun 2013, 21:21
Call Sign: cjay
Location: Manchester
Contact:

Re: Ham international jumbo

Post by cjay »

bigpimp347 wrote:clearly admin must think this idiot is worthy of being on this forum for some reason,
shame he's making the forum look like it's full of idiots and allows pillocks on..!!
I could take that personally y'know ;) :lol:
bigpimp347 wrote: as for the Jumbo..
they allegedly didn't do a stealth version, although i have seen/heard of a couple.

mk1 PTBM059 (multimode 2) twin board version.
mk2 PTBM121 (concorde 2) one single board.
mk3 PTBM133 (multimode 3) smaller single board more bands.

a lot of the UK versions (modded for 'legal use and stamped' were the mk2 which for me seems the hardest to find..!!
I'd never seen a non '059 Jumbo until recently, Marko Excaliburs yeah, but not the Jumbo and I've still not seen a '133 Jumbo in the flesh, I'd quite like one.
Mattylad
Top Poster
Top Poster
Posts: 1536
Joined: 03 May 2014, 20:09
Call Sign: RDX64
Location: Lancashire

Re: Ham international jumbo

Post by Mattylad »

I used to have a jumbo and for the life of me cannot remember what I did with it. :(
User avatar
Admiral
Legend
Legend
Posts: 10108
Joined: 08 Mar 2011, 21:20
Call Sign: 26TM157
Location: MK-UK

Re: Ham international jumbo

Post by Admiral »

The jumbo was (is) the most overrated UK CB of all time.

An under powered and noisy PSU, and just an MM2 or Concorde2 in a big box.

The best place for them is either pimps loft or landfill.
Winner of the 2017 IBTL 'Summer Sizzler' competition
User avatar
bigpimp347
Legend
Legend
Posts: 8792
Joined: 08 Aug 2009, 10:23
Location: J26 Nottingham

Re: Ham international jumbo

Post by bigpimp347 »

[quote="Admiral"

The best place for them is either pimps loft or landfill.[/quote]


:clap: :clap: :clap: :clap: :clap:
I want to Die Asleep like my Grandad did,
Unlike his Passengers, Screaming and Shouting.!
Post Reply