W5KGZ

HAM RADIO WEB PAGE

My Globe King 275 working good after a lots of love and months of work.

WRL Globe King 275: transmitter; Ad: 1951 Handbook; price $279.00 Kit form and $299.00 wired and tested . 275 watts AM, 350 watts CW; 160 thru 10 meters; RF Section:
The modulator consist of a 6SJ7 mic amp into a 6N7 phase inverter driving a pair of 6F6's which is transformer coupled to four 807 in class B configuration where the screens receive the audio sig of about 275 volts of ac sig voltage grid to grid.. The screens are connected to the control grids via a 22K ohn one watt resistor...Originally the modulator tubes were 6L6G's...The 807 are cheaper Ha...The power supply for the RF deck is low voltage 1 5Z3 and a pair of 866's The modulator deck has a pair of 5Z3's paralell plates on each tube for a full wave configuration...RF tubes are 7C5 oscillator, 2E26 buffer and a pair of V70D's PP in final.,(These are rare today)... .I do appreciate the little time it take mod and save lot of money on parts. The xmitter was built in 1948...and still works I do need some plug in coils for it however but will end up winding them.Would like to find the one's WRL make.
TVI shielding, severe cases may require additional low pass filer that at a slight additional cost. WRL continued to advertise the 275 long after the introduction of the 400 . Replace the power transformer for 1200V one that I had on hand.
Look for me on 3.880KHz 7.290KHz.and 7.160KHz.

3.910KHz LSB on SUNDAY NET

My receiver I, use is the HQ-180A is a General Coverage receiver covering 540 Khz to 30 MHz continuously. It has calibrated bandspread tuning for the 80-10 meter Amateur Bands. The receiver was introduced (as the HQ-180) in 1959. The HQ-180A, nearly identical, was introduced in 1963 and produced until 1972. The price of an HQ-180A was $439.

The receiver contains 17 vacuum tubes and a solid state rectifier, which replaced an additional rectifier tube in the HQ-180. It utilizes a tuned first conversion oscillator and has IF's of 3035, 455 and 60 KHz. The receiver IF/detector system was optimized for Single Sideband reception, and performs very well given its era and design parameters. Its a great receiver to use for either AM or SSB, and is still highly prized by Ham all over for its overall performance, frequency coverage, and quality audio.It is a great receiver for Amateur Band use, and is used by many vintage gear enthusiasts.

I got my Ham license back in May 1940 so that make over 60 years of enjoy being on the air. My interested in improving amplitude modulation on the HF radio bands using vintage vacuum tube equipment. Working with both home-brew and commercially built gear.Showing all the new HAMS the fun in keeping your vintage ham radio rigs on the air.My GLOBE King 275 is 52 years old and working today as good as it did in 1948..

  • E-MAIL TO W5KGZ
  • LOVE HAM RADIO