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Mod Superstar for 10 Meter Technician Use

Tnengineer

New Member
Sep 4, 2020
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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!
 

Technicians do not have FM privileges on 10 meters.

Get a real Amateur radio. They aren't that expensive
 
perhaps there is more than one 360FM model
superstar-360-fm.jpg
 
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.
 
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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
 
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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
 

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