UFO Superstar 1604

[Ashtec]

I would think you will need to broadbanded the the vco circuit on the Adams.....Avery limited VCO...

[mof000]

Good to see you on TM1 Ashtec!

[Ashtec]

Thanks there mof000 winter is here and it's getting a bit cold for playing outside so i've been looking at radios again...!!!

[cb4ever104]

so i've been looking at radios again...!!!

Good to see you back Paul . Even if it is just till the sun comes out

Sammy

[Ashtec]

Thanks there cb4ever104 I bet its the same in Spain Suns out your out...........

[Admiral]

Well, Pauls back, just need Mark and Bob for the three ugly sisters.

[JibberJabber]

Thanks Stronty.... Hope you are well...

J

[Ashtec]

Well, Pauls back, just need Mark and Bob for the three ugly sisters.

Well i'm not 100% back lol.. Just got a bit of free time on my hands at night now its winter time..........

[pirateradio]

2 in a pack for abt. 50 Euros

https://www.ebay-kleinanzeigen.de/s-anz ... 0-168-2164

Oldscool but interesting :-)

[163TM847]

I just got hold of one of these 1604's, Is it just MB8719/PLLO2A/858 they will work with. ?

And to answer an older post the Adams RX/TX can be easily broadbanded to cover atleast 26.065

[lbcomms]

They have a PLL on board (SM5118 from memory) so they will also work on the "non expandables" such as the uPD2824. Maximum of 2.55 MHz input though, so they won't go under the FCC band on a Cybernet without crystal swapping, and sets without a downmixer (i.e. TC9109 / TC9106 / LC7131 and the like) can't be hooked up to them either (well not without a lot of work anyway).

The UFO boxes were popular in Oz in the 90's when "unexpandable" radios such as the Cobra 146 and Uniden AX144 and PC122 became common. They caused the selectivity to downgrade at one end of the band and SSB warbled at the other end, owners often had to compromise one way or the other...

[163TM847]

They have a PLL on board (SM5118 from memory) so they will also work on the "non expandables" such as the uPD2824. Maximum of 2.55 MHz input though, so they won't go under the FCC band on a Cybernet without crystal swapping, and sets without a downmixer (i.e. TC9109 / TC9106 / LC7131 and the like) can't be hooked up to them either (well not without a lot of work anyway).

The UFO boxes were popular in Oz in the 90's when "unexpandable" radios such as the Cobra 146 and Uniden AX144 and PC122 became common. They caused the selectivity to downgrade at one end of the band and SSB warbled at the other end, owners often had to compromise one way or the other...

Thats what i wanted to know as i wanted to test it but i only have a radio with a 2824 [PC122XL] here i could test it with, Instructions dont include the 2824 though, Do you [or anyone else] know how it would go into a 2824 radio ?

[lbcomms]

Haven't done one for years, due to the selectivity and warble issues (in Oz, CB is SSB only so the warble thing was a big issue here).

If you know how a PLL works it's pretty straightforward, one coax replaces the tuning voltage that controls the VCO frequency, and the other coax is the input to the PLL divider that is sourced from the downmixer. Program the UFO as for the 858 SSB chassis, as they both use the same division scheme.

Downmixer output is 910 KHz to 1350 KHz.
Programmable divider is the above frequency divided by 10KHz, i.e. 91 to 135.

Isolate the "Fin" pin to source the input frequency, and the "AO" pin to connect the tuning voltage to the VCO. You'll also need to remove the pullup resistor (typically 1K to 3.3K) that connected the AO track to the 8 volt supply rail.

I'll have a look through some old notes today and see if I can find details of an actual installation for you.

Hope this helps...