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FS-4; Drake, R.L. (ID = 229689) mod-past25
FS-4; Drake, R.L. (ID = 229662) mod-past25
FS-4; Drake, R.L. (ID = 229663) mod-past25
FS-4; Drake, R.L. (ID = 229664) mod-past25
FS-4; Drake, R.L. (ID = 229665) mod-past25
FS-4; Drake, R.L. (ID = 229666) mod-past25
FS-4; Drake, R.L. (ID = 229667) mod-past25
FS-4; Drake, R.L. (ID = 229668) mod-past25
FS-4; Drake, R.L. (ID = 229669) mod-past25
FS-4; Drake, R.L. (ID = 229670) mod-past25
FS-4; Drake, R.L. (ID = 1806539) mod-past25 FS-4; Drake, R.L. (ID = 1806540) mod-past25
FS-4; Drake, R.L. (ID = 229661) mod-past25  
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FS-4; Drake, R.L. (ID = 1806539) mod-past25
Drake, R.L.: FS-4 [mod-past25] ID = 1806539 1280x597
Select picture or schematic to display from thumbnails on the right and click for download.
For model FS-4, Drake, R.L. Miamisburg, Ohio
Country:  United States of America (USA)
Manufacturer / Brand:  Drake, R.L. Miamisburg, Ohio
Year: 1977 ?? Category: Radio module post 1925 (not a part, not a key)
Semiconductors (the count is only for transistors) Semiconductors present.
Power type and voltage Alternating Current supply (AC) / 120; 240 Volt
Loudspeaker - - No sound reproduction output.
Power out
from Model: FS-4 - Drake, R.L. Miamisburg, Ohio
Material Metal case
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 183 x 96 x 270 mm / 7.2 x 3.8 x 10.6 inch
Notes Solid state Frequency synthesizer matching the R-4 and T-4 series and SPR-4 sets.
The FS-4 produces switchable 500 kHz spaced signals that can be fed to the receiver / transmitters instead of using separate crystals allowing continuous coverage. The 1 MHz and 0,5 MHz- ranges are switched on the FS-4 and the dial readout of the VFO (up to 1 kHz) for reception frequency added.
Collectors' prices  

Model page created by Martin Bösch. See "Data change" for further contributors.

All listed radios etc. from Drake, R.L. Miamisburg, Ohio
Here you find 149 models, 91 with images and 49 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.


Forum contributions about this model
Drake, R.L.: FS-4
Threads: 1 | Posts: 3
Hits: 2166     Replies: 2
drake: Drake FS-4 Sinthesizer
Juan Jose Alaiza
  1 I uploaded a schematic.
Also I scanned the manual (about 1 Mb.), is posible upload this?
Juan Jose Alaiza
Martin Bösch
  2 Hallo, thnk You for uploading the schematic.
It is technically possible to write a Forum post and upload the file for the manual as an attachment to this post, a file of this size should be ok.
On the other hand: Until now, at RMorg we usually provide only schematic and the most important parts out of technical manuals for download. So You can upload a technical specifications file or alignment instructions.
I have already scanned several manuals, I personally have them on the server of my personal website and give in a forum post the adress where the manual can be found. In addition, I did upload my manuals to BAMA (boatanchors manual archive,, Kenneth is very kind to include very many manuals in his documentary archive - and the FS-4 manual is there still lacking, so why not wending the file to him.
Greetings from Switzerland Martin Boesch
Juan Jose Alaiza
  3 Hallo Martin,
The manual is small (less of 900Kb.)
I am going to uploading to BAMA for all the community of old timers.
Greetings from Spain
Juan Jose Alaiza
Drake, R.L.: FS-4
End of forum contributions about this model