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Millen Coil Set for the 90800 Transmitter Set of Four, 10 , 20, 40, & 80 Meters in Excellent Condition

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MPN:
43012 43022 43042 43082
Condition:
Used
Shipping:
$12.00 (Fixed Shipping Cost)
  • Millen Coil Set for the 90800 Transmitter Set of Four, 10 , 20, 40, & 80 Meters in Excellent Condition
  • Millen Coil Set for the 90800 Transmitter Set of Four, 10 , 20, 40, & 80 Meters in Excellent Condition
  • Millen Coil Set for the 90800 Transmitter Set of Four, 10 , 20, 40, & 80 Meters in Excellent Condition
$124.99
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Description

Millen Coil Set for the 90800 Transmitter Set of Four, 10 , 20, 40, & 80 Meters in Excellent Condition

The coils in this set are all are in great shape!
 
 The part numbers for each coil is: 10M, 43012  20M, 43022  40M, 43042 80M, 43082
 
 
The Millen 90800 Transmitter-Exciter is a vintage amateur radio (ham) piece from James Millen Manufacturing Co., dating to the mid-1940s (around 1946–1948 based on catalogs and manuals). It was a compact, relay-rack-mountable 50-watt (up to about 65 watts output) CW transmitter/exciter using a 6L6 oscillator/multiplier stage and an 807 final amplifier. It was designed for plug-in coils to operate on amateur bands like 10, 20, 40, and 80 meters (with crystal control, often using frequency multiplication for higher bands). The transmitter came standard with one set of coils (typically for 10-meter output using a 40-meter crystal), and additional or full matched sets were available separately.This is a set of four plug-in coils specifically for the 90800, covering 10, 20, 40, and 80 meters. These are likely the cathode/grid and plate coils (each band typically used a pair: one for the oscillator/driver and one for the final, often with link coupling). They plug into sockets on the transmitter for quick band changes. These coils were high-quality, often on quartz or ceramic forms (e.g., types like 43012 for 10m, 43022 for 20m, 43042 for 40m, and possibly 43082 for 80m based on related listings).Information and Historical Context
  • The 90800 was one of Millen's early HF transmitters, inspired by a 1940 QST article for a simple two-tube exciter.
  • It was popular among hams in the post-WWII era for its reliability, compact design, and ability to drive higher-power amplifiers.
  • Manuals and catalogs (available on sites like the James Millen Society) describe the coils as "matched sets" or individual purchases, with the transmitter supporting operation up to 14 MHz (20 meters) directly, using multiplication for 10 meters.
  • These are collectible vintage ham radio components today, appealing to restorers of classic tube gear or those building/operating period-correct stations.
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