Author: N4GA – Rob
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10 Minutes of FAME on QRZ
I got an email today from a fellow ham telling me I hit the QRZ.com Featured Member slot. Woo hoo! My 10 minutes of fame! Actually, I have no idea how long it stayed up, but it was gone about an hour later….along with any ham radio fame.. Fleeting.
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SSA3000X Series Spectrum Analyzer
This Spectrum Analyzer came in last week. Looking forward to now actually seeing what these LPFs and Amplifiers are doing. RF is invisible, ya know! Now I can finally run through some TLT and biasing experiments I have had in my head for a long time now. No sense experimenting if you really can’t see…
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50V to 14V Regulator
I use an external 50V power supply for my amplifiers, the ESP 120. This gets a clean, powerful, well regulated 50V into the enclosure for the RF Pallet. In the essence of keeping everything as simple as possible, I tap off of this 50V and regulate down to 14V to power the low power circuits,…
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Quieting the ESP120 Fans
As mentioned in the main ESP120 article, you can slow down the fans in the ESP120. This will reduce the noise from unbearable to near silent. Pictures work best but basically, you locate the 4 fan leads, and insert 15Ω resistors in series with the 4 red fan wires. Again, since the ESP120 does not…
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Enabling the ESP120
Here’s how you turn on the ESP120 server power supply. Here’s the main ESP120 article. You will connect the three pins together. A 3-pin connector commonly used for servos in RC toys is perfect for this.