Mod Superstar for 10 Meter Technician Use

[Tnengineer]

Hello and thanks for helping to diagnose the radio problems via prior post.
I am soon to get Technician class license and hear this radio can undergo a mod to add frequencies in 10 meters that Technicians can use. I live in the Knoxville, Tn area but don’t know of anyone who can perform this. Any suggestions of places I can contact to ask about this?
Many thanks!

 

[999]

You need to be more specific with the model of radio.

 

[Tnengineer]

You need to be more specific with the model of radio.

Sorry about that.
Super Star 360FM

 

[nomadradio]

Does this radio have a MB8719 PLL in it? If so, you need a crystal to do this. The frequencies you would need will be real oddballs, probably not found already-made.

73

 

[Justme]

I build additional 40 channels on them using diodes to program the chip with a switch.
if it is the same version we had here with FM.

 

[DainBramage]

Technicians do not have FM privileges on 10 meters.

Get a real Amateur radio. They aren't that expensive

 

[BJ radionut]

Do NOT have AM privilege's either...but that rig does have USB I think

 

[DainBramage]

perhaps there is more than one 360FM model

 

[sp5it]

Radio needs crystal swap, retune etc.
It's not worth the money you'll need to put into.
Better buy other rig, Working on 10 out of the box.
Mike

 

[bob85]

That 360fm above is the uk version, see the CB27/81, pb010ab board,

the front is a plastic sticker over the original brushed aluminium front

came in via isle of man to bypass customs with just FM enabled & the sticker front to try to fool buzby & only sold under the counter round here,

ss360fm is the same rig as cobra 148gtl dx, both board versions,

early ss360fm was mid hi superhigh, 26.965 - 28.305

if you were over here you could sell a ss360 & buy a 10mtrs export & some beer.

 

[Tnengineer]

Technicians do not have FM privileges on 10 meters.

Get a real Amateur radio. They aren't that expensive

Correction...techs can do phone on a small portion of 10 meters. In

Technicians do not have FM privileges on 10 meters.

Get a real Amateur radio. They aren't that expensive

Intention was SSB in the small part of 10 meters allocated to techs

 

[nomadradio]

The PB010 radio is a bit odd. Uses a MC145106 PLL, but has the "SR209" channel selector normally used in the MB8719 radios. The selector in a "normal" radio with that chip (Galaxy, Connex) puts out binary codes 91 to 135 (in decimal). The selector in this radio is 79 to 123.

Never mind the rest of the math, but this makes the PLL mixer crystal 15.0 MHz. The 4008 adder chips connected to the band selector have diodes driven by the band selector that determine the extra band frequencies. Changing that crystal will move all the bands up or down together.

To just move all the bands up one 45-channel "band" would call for a 15.45 MHz crystal. Not one I know to be stocked on a shelf anywhere. But this would extend the radio's upper limit from 28.305 to 28.755. More than enough to cover the tech voice allocation that ends at 28.5.

A 15.36 MHz crystal that can be found already-made would get you up to 28.66 Mhz, but the CB band channel numbers would all be wrong. RF Parts used to have that one. Pretty sure Barkett still does.

73

 

[Shadetree Mechanic]

perhaps there is more than one 360FM model

I like the FM deviation knob on the front.

 

[bob85]

Shadetree,
The deviation knob did nothing, its the disabled mode switch CW AM FM USB LSB.

 

[Road Squawker]

Shadetree,
The deviation knob did nothing, its the disabled mode switch CW AM FM USB LSB.

Ya mean it can't produce undeviated emissions?

Yeah, turn the dev knob all the waaaaaay to the right