Differences

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--- radios:tk-90 [2024/05/13 16:44] – [Data modes / modem use] m0lte
+++ radios:tk-90 [2024/05/15 21:58] (current) – g6fji
@@ Line 16: / Line 16: @@
 {{ :radios:kenwood_tk-90_service.pdf | Kenwood TK-90 service manual }}
+{{ :radios:kenwood-tk-90-pc-commands.pdf | PC Commands }}
+{{ :radios:tk-90_function_reference.pdf | Function Reference}}
+{{ :radios:tk-90_navigator_ttl_cable.pdf | Navigator TTL Cable}}
+{{ :radios:tk-90_navigator_rs232_cable.pdf | Navigator RS232 Cable}}
+{{ :radios:tk-90_modification_reference.pdf | Modifications Reference}}
 Requires programming. Both serial and USB-serial mic jack programming cable is available as a Kenwood part (see below) or off brand USB versions are also available. This implies it is just straight serial so a generic USB serial cable with an RJ45 plug crimped on the end may be suitable.
@@ Line 81: / Line 91: @@
   * M22 DATA S-BAND: which sideband will data be transmitted on - generally set to USB
-====== Adjusting sensitivity ======
+====== Adjusting TX audio response ======
 Remove the top lid of the radio- 8 screws.
@@ Line 87: / Line 97: @@
 Trimmer VR852 is TX sensitivity - max sensitivity to TX audio input is fully clockwise.
+To set up TX audio, I recommend the following procedure:
+  * in the dealer menu, set DI to 4, the default
+  * set the radio to 100W
+  * set your modem to its maximum volume level (on NinoTNC I recommend DIP switch 1 is down/off (i.e. lower transmit audio range and with its DEV pot set to maximum)
+  * have the modem transmit repeated frames (on NinoTNC, hold test TX button for ~20 seconds and release)
+  * turn VR852 until a power meter connected to the radio reads say 50W
+  * adjust the modem output volume down until the power meter reads the desired output power, e.g. 25W
 ===== Navigating =====