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Phono Cartridges have been moved to the bottom of this page
Tube Radio Data
Swan transceiver 7360, 6JH8 balanced modulator tubes
All early Swan transceiver models (e.g. 140, 350, 500C) used the 7360 tube for the balanced modulator however beginning in 1968 it was replaced by the 6JH8. The 250C, 350C, 500CX (and the last 25 of the 500C's) and all subsequent models used the 6JH8 tube. At that time the 6JH8 sold for about 1/5 th the cost of the 7360 so Swan saw not only a cost saving and easier availability but also found the 6JH8 worked better - however some users feel that the audio quality from transceiver models using the 7360 is somewhat superior to those using the 6JH8 tube. The 6JH8 can be retrofitted into any transceiver employing the 7360 tube. There are no circuit changes other than the tube socket pin wiring (see chart below) all other components remain the same. This requires all pins except the two filament pins rewired.
7360
FUNCTION
6JH8
PIN 1
CATHODE
PIN 7
PIN 2
SCREEN GRID
PIN 3
PIN 3
CONTROL GRID
PIN 6
PIN 4
FILAMENT
PIN 4
PIN 5
FILAMENT
PIN 5
PIN 6
PLATE #1
PIN 8
PIN 7
PLATE #2
PIN 9
PIN 8
DEFLECTOR #1
PIN 2
PIN 9
DEFLECTOR #2
PIN 1
Special thanks to Robert Balonis, NB3W and the Swan Tube Transceiver Compendium
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1L6 substitute
The simplest solution is to replace the 1L6 with a 1R5 but first carefully cut off pin 5 of the 1R5 very close to the glass. *
Open I.F. transformers
If you can't find a replacement I.F. transformer for your early AM tube radio here is a simple method of changing the I.F. transformer circuit to impedance coupling with a 2.5 mh RF choke (Hammond 1503) and a 75 to 100 pf mica capacitor.
The modified circuit will not perform as well as the original so take care to align the I.F. precisely.
1935 Radio Trade Name To Manufacturer Chart
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Miscellaneous Vacuum Tube Data
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UNIVERSAL TUBE BOX - USA
click pic for full size image
past months feature tube box photos
2008
Cartridge and Stylus data
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OCTOBER - RCA WORLD MAP TUBE BOX - USA
NOVEMBER - LUXOR RADIO TUBE BOXES - SWEDEN
DECEMBER - GENALEX TUBE BOX - ENGLAND
2009
JANUARY - NEOTRON TUBE BOXES - FRANCE
FEBRUARY - SIEMENS TUBE BOXES - GERMANY
MARCH - AWV TUBE BOX - AUSTRALIA
APRIL - HIT RAY TUBE BOXES - JAPAN
MAY - TRIOTRON TUBE BOXES - AUSTRIA
JUNE/JULY - TUNGSRAM TUBE BOXES - HUNGARY
AUGUST - FIVRE TUBE BOX - ITALY
SEPTEMBER - PHILIPS TUBE BOXES - HOLLAND
OCTOBER - JJ TUBE BOXES - SLOVAK REPUBLIC
NOVEMBER - GENDIS TUBE BOX - JAPAN
DECEMBER - MULLARD TUBE BOXES - ENGLAND
2010
JANUARY - GRAMMONT TUBE BOX - FRANCE
FEBRUARY - TRIAD TUBE BOX - USA
MARCH - BRADFORD TUBE BOX - USA
APRIL - EARLY RCA NUVISTOR TUBE BOX - USA
MAY - PUROTRON TUBE BOX - USA
Very limited quantities!
All listed cartridges are NOS. Please email for pricing and availability.
| Astatic 124 | Astatic 349D | Astatic 420 SOLD OUT | Astatic 422 SOLD OUT |
| Astatic 426 | Astatic 434 | Astatic 477 SOLD OUT | Astatic 610 |
| Astatic 713 | Astatic 759 | Electro-Voice 5080D (Garrard X10 & X11) |
Electro-Voice 5178 (G.E. RT 1054) |
| Electro-Voice 5192 (RCA 118187) |
Electro-Voice 5201 (Varco TOH-46X) |
Electro-Voice 5212 (Montgomery Ward 60-158) |
Electro-Voice 5241 (Varco CN-65) |
| Electro-Voice 5341 (Panasonic EPC-35TTA) |
Electro-Voice 5344D | Electro-Voice 5453 | Electro-Voice 5564D (Panasonic EPC-42STAD) |
| Electro-Voice 5573 (BSR SC8H2) |
Electro-Voice 5574D (BSR SC8H3) |
Electro-Voice 5602D (Panasonic EPC 09 STAD) |
Electro-Voice 5643 (Montgomery Ward 60-192) |
| Zenith P171D | Zenith P177D | Zenith P178D | Zenith 142-166 |
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