Hygain VIII home base....

[wheel bender]

hygain 8 side.jpg

hygain 8 home base.jpg

Some years ago I spotted one of these am/ssb home bases in a second hand shop. I used to walk past the window and look at it week after week. Then one day it was gone. I've not seen another one since. There are probably people who will say they were rubbish. But I personally like the styling of this piece of 70s/80s weirdness....Is the main body of it made from an original atari console? lol.

[NightProwler]

It looks like an Atari and an 80's answering machine 'got it on' and gave birth to the Hygain VIII

[bigpimp347]

i sold one on here a couple of weeks back..
should be in the hands of cubby as we speak..

uses a PTBM048 board, same as a multimode 2 but without the FM part of it..
120ch and not all bad, but try and find any information on one.

[superstar]

I'd love one, be good as a vintage clock radio for beside the bed

[Ashtec]

i sold one on here a couple of weeks back..
should be in the hands of cubby as we speak..

uses a PTBM048 board, same as a multimode 2 but without the FM part of it..
120ch and not all bad, but try and find any information on one.

Yes you're right i've been looking up the PTBM048 to wire this Superstar UFO up to a 059COX But all the UFO manual cover's is the PTBM048 so i had to sit there and look what the difference was between the PTBM048 and the PTBM059COX and all i can really see that's different is the VCO being the old tin one and the Loop circuit and afew other bits as well as not adding FM so i've come to the conclusion that Cybernet got the PTBM048 pcb and cut the front end off and replaced it with the PTOS006AOX to cut cost down on making other main pcb..............

[Mitch]

i sold one on here a couple of weeks back..
should be in the hands of cubby as we speak..

uses a PTBM048 board, same as a multimode 2 but without the FM part of it..
120ch and not all bad, but try and find any information on one.

Err.. not quite, it uses a PTBM030 main board with a seperate pll/xtal board behind the channel changer in the top bit. Some funny frequency xtals and a lot of 'em too. Info on them is very hard to come by though.

Yes you're right i've been looking up the PTBM048 to wire this Superstar UFO up to a 059COX But all the UFO manual cover's is the PTBM048 so i had to sit there and look what the difference was between the PTBM048 and the PTBM059COX and all i can really see that's different is the VCO being the old tin one and the Loop circuit and afew other bits as well as not adding FM so i've come to the conclusion that Cybernet got the PTBM048 pcb and cut the front end off and replaced it with the PTOS006AOX to cut cost down on making other main pcb..............

I thought Cybernet modded/cut the PTBM058 (that's zero five eight) board for the later export rigs, same as the ones used in the General Electric ssb rigs, looks the same though so don't know what improvements were made, I've yet to see one in the flesh.

[bigpimp347]

i think it was an 048, not sure,
all i know is i sold it to a member on here
and the only info you can really find is from an italian website where they have the schematic and a few other bits..

a bit of a strange radio, with not a lot of information on it.

[Ashtec]

i sold one on here a couple of weeks back..
should be in the hands of cubby as we speak..

uses a PTBM048 board, same as a multimode 2 but without the FM part of it..
120ch and not all bad, but try and find any information on one.

Err.. not quite, it uses a PTBM030 main board with a seperate pll/xtal board behind the channel changer in the top bit. Some funny frequency xtals and a lot of 'em too. Info on them is very hard to come by though.

Yes you're right i've been looking up the PTBM048 to wire this Superstar UFO up to a 059COX But all the UFO manual cover's is the PTBM048 so i had to sit there and look what the difference was between the PTBM048 and the PTBM059COX and all i can really see that's different is the VCO being the old tin one and the Loop circuit and afew other bits as well as not adding FM so i've come to the conclusion that Cybernet got the PTBM048 pcb and cut the front end off and replaced it with the PTOS006AOX to cut cost down on making other main pcb..............

I thought Cybernet modded/cut the PTBM058 (that's zero five eight) board for the later export rigs, same as the ones used in the General Electric ssb rigs, looks the same though so don't know what improvements were made, I've yet to see one in the flesh.

You may be right i don't really know too much about the AM//SSB chassis but i've been working with the 048 and its not far off at all................

[Mitch]

i think it was an 048, not sure,
...

I am, I seen it at cubby's last week when I went round there. He was working on it then so I had a look inside, he was scratching his head trying to find info on it. Any chance of a link to the site you found a schematic on? And how about our friend Claude, he comes up with some good info from different sources... CQ Claude... copy Mitch c' mon

[Ashtec]

I found this on the net in Brazil................

Cybernet also produced a radio boards intended for market
"Export", with more channels and FM, with a circuit very similar to the board
PTBM048A0X,

Colt 485.




The Legendary Chassis PTBM048AOX
Among the various equipments for citizens band produced from 1977
when 40 channels were released by the FCC for the U.S. market, some
made history as the radios produced by Uniden (lines Cobra, Superstar
President).
However, a number of equipment AM / SSB also produced by Cybernet
was very successful, among them Lafayette, the G & E and Hy Gain.
Most models radio AM / SSB Cybernet the PLL02A used, the
Unlike the equipment manufactured by Uniden, we always used the PLLs
uPD858, MB8719 and MC145106P, and were produced in Japan, while radios
Uniden were produced in Taiwan, the Philippines and finally in Malaysia.
These models Cybernet also had success in Brazil, where the models
known were the Hy Gain V (2705), GE 3-5825A, Lafayette Telsat SSB80,
Telsat SSB120 Lafayette, Lafayette Telsat SSB 140 and Cobra 148 GTL-B (which was
false, because it was never produced by Dynascan, owner of the brand Cobra!). Every
these models use the card or PTBM048A0X PTBM058COX (the latter for
Canadian market) Cybernet.
Besides these models already mentioned, these plates were also used by
following equipment:
AWA / Thorn 1503, Boman CB950, Cardon Iroquios 40, 480 Colt, Colt 485DX, Colt
890, Colt 1000, Colt 1200 (Excalibur), Gemtronics GTX77, Hy Gain 2785, Hy Gain
3108 (VIII), JC Penny 981-6247, JIL Citizen MPL-5, JIL SSB-M6, Midland 77-002,
Midland 78-976, 79-892 Midland, Motorola CR-520, CR-521 Motorola, Palomar 2900
Pearce-Simpson Super Panther, Pearce Simpson Bengal Mark-I, RCA 14T302,
Truetone CYJ4837A-87 Universe 5600.
For these models, there are the service manuals SAMs Photofacts 153, 175, 180,
183, 184, 188, 224, 226, 227, 258, 259, 291 (all are identical!)
Cybernet also produced a radio boards intended for market
"Export", with more channels and FM, with a circuit very similar to the board
PTBM048A0X, while in Brazil the most common model is the Radio Cobra 150 GTL
(Also fake!), Which uses the board PTBM121. In addition to this board, there are other
similar models, as PTBM059, PTBM080, PTBM125 but generally used
models destined for the European, Australian, and New Zealand, and for this
same reason, difficult to find in Brazil

[bigpimp347]

i sent cubby the link for it before i sent him the radio..

has he lost it already ???

http://www.radiomods.co.nz/ptbm048aoxalign.html

radio mods say's it should be a 048..

http://www.py2adn.com/artigos/PTBM048AOX.pdf

you'll have to let us know what a PTBM030 board is mitch..
as i remember when i was inside the Hy-gain VIII i didn't recall seeing it marked up 030..

[Ashtec]

i sent cubby the link for it before i sent him the radio..

has he lost it already ???

http://www.radiomods.co.nz/ptbm048aoxalign.html

radio mods say's it should be a 048..

http://www.py2adn.com/artigos/PTBM048AOX.pdf

you'll have to let us know what a PTBM030 board is mitch..
as i remember when i was inside the Hy-gain VIII i didn't recall seeing it marked up 030..

I also have the feeling its an 048 as i come across the Hy Gain base when looking for a 048 diagram.............

[Mitch]

i sent cubby the link for it before i sent him the radio..

has he lost it already ???

http://www.radiomods.co.nz/ptbm048aoxalign.html

radio mods say's it should be a 048..

http://www.py2adn.com/artigos/PTBM048AOX.pdf

you'll have to let us know what a PTBM030 board is mitch..
as i remember when i was inside the Hy-gain VIII i didn't recall seeing it marked up 030..

He won't have lost it but if it's different to what's reported then it's of little use unfortunately. I should've took pics because we all know "pics or it didn't happen"
I don't know if he's still got it but if I speak to him I'll ask him. I've not seen another rig using an 030 board and he couldn't find any info, but it did look 'old tech' (but typical cybernet) to me, I think the pll board was a PTOS015 from memory. I did see it with my own eyes though. Still if it works well it really doesn't matter. There could be differences between the same models, some early and some late etc. I haven't had much to do with old CB's 'till recently though and I'm a bit rusty now.

[Ashtec]

Circuit diagram's
http://ham-international.nuxit.net/cybernet.htm

[Ashtec]

By the look's of it they made a few different Hygain VIII home base's...........

Hy-Gain VIII model 120 CH AM / USB / LSB
Motherboard has a number of PTBM035COX


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