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Modifications for the Kenwood TS-440 - Radio mods
https://www.radiomods.co.nz/kenwood/kenwoodts440.html
TS-440 RX Audio Mods Here's some easy modifications to improve the rx audio fidelity of Kenwood TS-440's. All references below are to the IF board component designations. Increase C60 to a .47uf or 1 uf. This will increase low frequency response on all modes. Decrease C51 to .01 uf. This will increase high frequency response on SSB/CW.
Kenwood TS-440S (TS 440 S TS440S) mods reviews software ...
http://www.hampedia.net/kenwood/ts-440s-rx-audio-mods.php
Here's some easy modifications to improve the rx audio fidelity of Kenwood TS-440's. All references below are to the IF board component designations. Increase C60 to a .47uf or 1 uf. This will increase low frequency response on all modes. Decrease C51 to .01 uf. This will increase high frequency response on SSB/CW.
WB2GCR BEAR's Kenwood TS-440 AM Mods
http://bearlabsusa.com/TS440/TS440.html
BEAR's TS-440s AM Mods (v1.1.06) *Suggested Mods For the Kenwood TS-440s to get a decent AM audio signal* As Amateur Radio Station WB2GCR, I've reviewed the mods available on the web and come up with my own version with some differences. The main sources of existing mods for the 440 are here: http://www.mods.dk http://www.somis.org/440.html
Kenwood TS-440S (TS 440 S TS440S) mods reviews software ...
http://www.hampedia.net/kenwood/ts-440s-digital-audio-modification.php
Mods for Kenwood TS-440S (TS 440 S TS440S) : Kenwood TS-440S (TS 440 S TS440S) IF-10 (RS-232) interface Kenwood TS-440S (TS 440 S TS440S) Displays dots on certain bands Kenwood TS-440S (TS 440 S TS440S) Circuit Improvements Kenwood TS-440S (TS 440 S TS440S) mod for improved receive sensitivity of 0.5 to 1.6MHz
Modifications for the Kenwood TS-440 - QSL.net
https://www.qsl.net/ve7lgp/kenwood/Modifications%20for%20the%20Kenwood%20TS-440.htm
19-07-1998 TS-440 RX Audio Mods Here's some easy modifications to improve the rx audio fidelity of Kenwood TS-440's. All references below are to the IF board component designations. Increase C60 to a .47uf or 1 uf. This will increase low frequency response on all modes. Decrease C51 to .01 uf. This will increase high frequency response on SSB/CW.
440 mods - KLIMA CO
http://www.klimaco.com/HAMRADIOPAGES/440_mods.htm
Kenwood TS-440S (TS 440 S TS440S) RX Audio Mods : Here's some easy modifications to improve the rx audio fidelity of Kenwood TS-440's. All references below are to the IF board component designations. Increase C60 to a .47uf or 1 uf. This will increase low frequency response on all modes. Decrease C51 to .01 uf.
mods.dk - Articles for Kenwood 'TS-440'
https://www.mods.dk/index.php?ModelId=521
TS-440S Notch filter low frequency improvements: 19 Jul 1998: TS-440S Protecting Q33: 19 Jul 1998: TS-440S Case Screws binding in the heat sink: 19 Jul 1998: TS-440 RX Audio Mods: 19 Jul 1998: TS-440S Digital Audio Modification: Click here to view all the ABOVE modifications for ts-440 in one page.
The AM Window: Tech: Mods: TS-440
http://www.amwindow.org/tech/htm/ts440/ts440mods.htm
Since the TS-440 is using an AN612 balanced modulator (which is similar to an NE602) over modulation will not cut the carrier off as in some other rigs without a balanced AM modulator. Another important note: The TS-440 must be transmitting into …
Circuit Improvements for the TS-440S - somis.org
http://www.somis.org/440.html
[use the 440's 20db ATTN as a standard] {Use 15db rolloff at zero-beat for more low-end audio, or 25db roll-off for more high-end audio and/or better unwanted sideband suppression} This completes the alignment of the carrier oscillators. >>> If you installed BOTH filters: on LSB tune the 440 above the calibrator's zerobeat frequency and note the 20db (or the roll-off db you used …
kenwood ts-440s 11mtr mods? - WorldwideDX Radio Forum
https://www.worldwidedx.com/threads/kenwood-ts-440s-11mtr-mods.18626/
Kenwood ts 440 power adjustment Hello all.I had a 440 years ago and loved the rig but someone wanted it at a time that I needed a few bucks so I sold it.Now I bought another one in great shape but the power is a little low on SSB,about 40 watts.Does anyone know how to adjust it so I can get at least 90 watts out of it again?
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