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Frequency-Agile Audio Filter FL1 Amateur-D Datong Electronics,
https://www.radiomuseum.org/r/datong_audio_filter_fl1.html
from Radiomuseum.org. Model: Frequency-Agile Audio Filter FL1 - Datong Electronics, Ltd.; Shape. Tablemodel, with any shape - general. Dimensions (WHD) 205 x 83 x 140 mm / 8.1 x 3.3 x 5.5 inch. Notes. Datong Frequency-Agil Audio …
Datong Archive - FL1
https://sites.google.com/site/datongarchive/fl1
FL1. Frequency-Agile Audio Filter. Datong's first audio filter. I bought mine for the grand sum of £30 new when they were selling them off in 1986 and I still have it. Although superseeded by Datong's FL2 and FL3, and by present day DSP devices, it is …
Datong Frequenz - Agile Audiofilter Fl - Radio Amateur 10-1979
https://www.radioexperimenter.us/rm-1979-10/t-ouc.html
On the FL1, however, the afc action keeps the filter on the received signal. Should you wish to operate without the afc feature, all you have to do is push in a button labeled -afc and the function is disabled. Normally, for CW work, I use the filter in the peak. The Datong FL1 audio fitter: position with fairly narrow bandwidth.
DATONG FL1 AUDIO FILTER SCH Service Manual download ...
https://elektrotanya.com/datong_fl1_audio_filter_sch.pdf/download.html
DATONG FL-1 FILTER FL1 AUDIO FL; If you have any question about repairing write your question to the Message board. For this no need registration. Please take a look at the below related repair forum topics. May be help you to repair.
Datong FL1 Audio Filter - UK Vintage Radio Repair and ...
https://www.vintage-radio.net/forum/showthread.php?t=169084
Re: Datong FL1 Audio Filter Hi Dave. Yes, my FL1 has the duplicated DIN speaker-type sockets but, like you, I'd modified this to a low power DC socket, with a voltage regulator to tame a 3Vp-p sine wave on a supposedly DC wall-wart.
FS - Datong Mofel FL1 Audio Filter
http://www.redwaveradio.com/2_37242dd53239c09f_1.htm
FS - Datong Mofel FL1 Audio Filter. 1 post • Page:1 of 1. FS - Datong Mofel FL1 Audio Filter. by PA » Sat, 28 Feb 1998 04:00:00 . One Datong Model FL1 Frequency Agile Audio Filter for sale. It has automatic or manual modes with peak/notch or bypass modes. Has seperate
Datong FL1 audio filter | eBay
https://www.ebay.com/itm/255082223983
This is a Datong FL1 audio filter which is used to make listening to radio signals easier by filtering out unwanted noise. It runs on a PP9 battery. I do not have the manual but it is quite straightforward in use.
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