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nomadradio's latest activity
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nomadradio replied to the thread Early Galaxy Saturn frequency counter problem.The six digits are multiplexed. If you hold a fan between your eyes and the display, you'll see a strobe pulsation as the fan blades... -
nomadradio replied to the thread Early Galaxy Saturn frequency counter problem.To turn a "2" into a "6" the a segment has to be shut off when it should be on and the e segment turned on when it should be off. All...
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nomadradio replied to the thread Echo Board Question.The side-by-side 3-pin headers have the PTT pins tied from one header to the other. The echo board just passes the PTT line from the...
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nomadradio replied to the thread Transformer test fixture.Never underestimate the power of resonance. 73
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nomadradio replied to the thread Transformer test fixture.I remember a test setup from decades ago that switched a fixed capacitor in parallel with the IF transformer winding. This tester was an...
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nomadradio replied to the thread Another Ameritron fault.I sympathize. The alternative is to "audit" the assembly and compare every part to the correct type. Not efficient. But maybe a little...
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They sent me another one and took of $100 from the price. Its a shame..it was such a great business.
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nomadradio replied to the thread General Stonewall Jackson half rx.If either one fails to go close enough to zero, the next question would be which one? The mode switch interrupts power to internal...
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nomadradio replied to the thread Reverse polarity diode ar 6666.Used the bridge-rectifier trick on 23-channel radios decades ago for a local quarry. The drivers figured out a blown radio was an...
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nomadradio replied to the thread Enconco RIP.The article does point out a remaining competitor in Massachusetts, Kennetron. https://www.kennetron.com/ Honestly never heard of them...
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nomadradio replied to the thread General Stonewall Jackson half rx.I should come up with a picture of some sort for this, but for now, find two wire jumpers on the circuit board, to the rear of the...
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nomadradio replied to the thread Fulcomm 2303 modifications.Folks accustomed to the design of 40-channel SSB radios since the 1980s will expect the radio's internal carrier frequency to shift up...
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nomadradio replied to the thread SWR before linear.Sooner or later oxygen gets into the act. The braid will eventually oxidize where it lays against the connector body's surfaces. Heat...
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nomadradio replied to the thread SWR before linear.People skip soldering the coax braid on their coax jumpers. And for good reason. It's tough to get it hot enough to properly solder the...
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nomadradio replied to the thread RCI 2970 N4 Suddenly Lost Around 1/2 Power or more.The black paint obscures ID of DEI transistors. Cracked apart some cadavers and that's what I found inside. The four-die layout of DEI's...
