-
You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
WTB - Galaxy Expander "N" kit
- Thread starter Big Kahuna
- Start date
I have this, states it will work on a 146 Cobra, which I believe is the same as yours.
I scanned all the info to a .pdf file.
This is some old stuff, I never heard of Spector Products
I scanned all the info to a .pdf file.
This is some old stuff, I never heard of Spector Products
The Expo 100 "N" kit is basically an "A" with varactors added to the crystals. It does not compensate for mode selection, you would have to open your Clarifier and shift either 2.5 Kc up or down to get back to center slot.
A Galaxy Viagra board works better, The Viagra A board has individual adjustment coils on each crystal for the 3 modes, AM/USB/LSB.
The Viagra B board has an MC145106DM surface mount PLL on it, and has it set up to step in 2.5 Kc steps on the lower pins of the programmable divider for mode selection, and uses diodes to add to the 4008 adder chips for band selection on the higher pins of the programmable divider.
I bought a few from RF Parts about 2008 or so before they discontinued selling them, for samples,
I bought a couple of "Blue Dot A" boards (+40, -40), put one of these in my PC122 to test (still in it), a "Green Dot A" (I forget, maybe +40 and +80 ?) and "Red Dot A" board (I think -40 and -80). These boards are all in my storage unit, buried right now.
I also bought a "Viagra B" board, the one with the PLL on it, never installed it,
https://www.worldwidedx.com/threads/realistic-trc-465-vco.257429/#post-731836
A Galaxy Viagra board works better, The Viagra A board has individual adjustment coils on each crystal for the 3 modes, AM/USB/LSB.
The Viagra B board has an MC145106DM surface mount PLL on it, and has it set up to step in 2.5 Kc steps on the lower pins of the programmable divider for mode selection, and uses diodes to add to the 4008 adder chips for band selection on the higher pins of the programmable divider.
I bought a few from RF Parts about 2008 or so before they discontinued selling them, for samples,
I bought a couple of "Blue Dot A" boards (+40, -40), put one of these in my PC122 to test (still in it), a "Green Dot A" (I forget, maybe +40 and +80 ?) and "Red Dot A" board (I think -40 and -80). These boards are all in my storage unit, buried right now.
I also bought a "Viagra B" board, the one with the PLL on it, never installed it,
https://www.worldwidedx.com/threads/realistic-trc-465-vco.257429/#post-731836
Going to install a DDS VFO so no longer need the kit. Thank you everyone!
Yeah I have to get the module from Troys along with some extra instruction help and then I'll attempt it. I sent Troys a 148 that they are going to use for a step by step video which should be a game changer for those doing it themselves.
I wish he'd include some sort of "daughter" pc board to plug the Arduino nano into. The holes around the edge of that board are okay to insert and solder just one wire. But the ground and power pins end up pretty crowded with wires leading off four or more directions.
Cool firmware, though.
73
Cool firmware, though.
73