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- Newsgroups: rec.radio.amateur.misc
- From: wa2ise@cbnewsb.cb.att.com (robert.f.casey)
- Subject: TS440 receiver audio mods file
- Message-ID: <1993Mar24.130853.8959@cbfsb.cb.att.com>
- Keywords: mods
- Sender: news@cbfsb.cb.att.com
- Organization: AT&T
- Date: Wed, 24 Mar 1993 13:08:53 GMT
- Lines: 29
-
-
- copied from packet:
- Msg# TSF Size #Rd Date Time From MsgID To
- 38513 BF 1520 0 19-Mar 2236 N2FAM 2890_WA2OLZ MOD@USBBS ()
- Sb: 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.
-
- * Try removing R263 (tacked on the bottom of the board on my early
- production unit). This will lower in amplitude the audio coming
- out of the detectors and improved the smoothness (a real technical
- term) of the audio, especially on AM signals.
-
- And, of course, I take no responsibilty for anything you do to
- your radio. Be careful. The IF board on the 440' is about the easiest
- one to get at.
-
- 73/Dave n2fam@ka3fmo.pa
- ========================================================================
- Note: I haven't tried or verified this, proceed at your own risk. WA2ISE
-
-
-