Yesterday, 11:29 AM
Joseph, it is because I am retired and a little demented. My problem is that I wanted to own a collection that spans the history of radio, but my house is only 1,000 Sq ft (not counting basement and garage). My office is about 8'X10'. Shelving helps. I do have some duplicates. I have some of the first radios marketed for broadcast reception (The Westinghouse Aeriola Sr and "RC", both of which date to about 1922, an Atwater Kent 10, a GE built RCA Radiola 2, a FADA 160 and a homebrew 3 tube regenerative receiver, likely ca 1923). My only goal now is to get an RCA Crystal set (Radiola 1, Aeriola Jr, etc.,) a GE 1300 and 1400
ca 1921, and an RCA R37, ca 1933, as this is the archetype of the "modern" or "mature" tube radio containing a pentagrid convertor, remote cutoff pentode IF, diode- triode or diode-pentode detector - 1st AF amp and pentode output with heater - cathode design, and AVC derived from the detector. Other than heater voltage, tube style and the elimination of the power transformer, this circuit remained essentially the same until the end of the vacuum tube era. The "AA5" or "All American 5" AC-DC radio derived from this circuit (although the R37 is a 6 tube set that has an RF amp also). This set uses tubes with 2.5V heaters. At this time, Philco used 6V heaters because Philco was a leader in automobile radios. It was thought that operating 6V tubes on AC would cause too much hum but this turned out to be not the case. I may also want an RCA 128 as it was the epitome of "Skyscraper" styling.
I have nothing from the "Wireless" error but hey, I'm not rich.
ca 1921, and an RCA R37, ca 1933, as this is the archetype of the "modern" or "mature" tube radio containing a pentagrid convertor, remote cutoff pentode IF, diode- triode or diode-pentode detector - 1st AF amp and pentode output with heater - cathode design, and AVC derived from the detector. Other than heater voltage, tube style and the elimination of the power transformer, this circuit remained essentially the same until the end of the vacuum tube era. The "AA5" or "All American 5" AC-DC radio derived from this circuit (although the R37 is a 6 tube set that has an RF amp also). This set uses tubes with 2.5V heaters. At this time, Philco used 6V heaters because Philco was a leader in automobile radios. It was thought that operating 6V tubes on AC would cause too much hum but this turned out to be not the case. I may also want an RCA 128 as it was the epitome of "Skyscraper" styling.
I have nothing from the "Wireless" error but hey, I'm not rich.
"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis
Best Regards,
MrFixr55