radios:tk-90
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
radios:tk-90 [2024/05/04 18:25] – [Mic pinout] m0lte | radios:tk-90 [2024/05/15 21:58] (current) – g6fji | ||
---|---|---|---|
Line 16: | Line 16: | ||
{{ : | {{ : | ||
+ | |||
+ | {{ : | ||
+ | |||
+ | {{ : | ||
+ | |||
+ | {{ : | ||
+ | |||
+ | {{ : | ||
+ | |||
+ | {{ : | ||
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. | 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 54: | Line 64: | ||
===== Data modes / modem use ===== | ===== Data modes / modem use ===== | ||
- | |||
- | Remove the top lid of the radio- 8 screws. | ||
- | |||
- | Turn trimmer VR852 fully clockwise, for max sensitivity to TX audio input. | ||
Install KCT-39 - accessory breakout cable. | Install KCT-39 - accessory breakout cable. | ||
- | |||
- | Boot radio into dealer mode by holding down B while powering up. Scroll down to FUNCTION, and press D. Scroll to menu item 19: DI LEVEL and press D. Turn up to 9, maximum. Press the square button. Press the red button twice to exit and reboot. | ||
Build a cable (the plug parts come with KCT-39): | Build a cable (the plug parts come with KCT-39): | ||
- | * RX Audio -> pin 14 (sky blue) | + | * RX Audio -> pin 4 - DEO - brown |
- | * TX Audio -> pin 15 (turquoise) | + | * TX Audio -> pin 5 - DI - orange |
- | * PTT -> pin 6 (yellow) | + | * PTT -> pin 6 - DPTT - yellow |
- | * Ground -> pin 8 (blue) | + | * Ground -> pin 8 - GND - blue |
+ | |||
+ | NB - DI is "data input audio", | ||
{{: | {{: | ||
- | Some other recommended settings | + | ====== Dealer mode ====== |
+ | |||
+ | Boot radio into dealer mode by holding down B while powering up. Scroll down to FUNCTION, and press D. Adjust settings as desired. Press the red button twice to exit and reboot. | ||
+ | |||
+ | Some recommended settings in DEALER mode: | ||
* M2 MIN VOLUME: 0 - means the radio can boot with the volume turned to zero | * M2 MIN VOLUME: 0 - means the radio can boot with the volume turned to zero | ||
Line 81: | Line 91: | ||
* M22 DATA S-BAND: which sideband will data be transmitted on - generally set to USB | * M22 DATA S-BAND: which sideband will data be transmitted on - generally set to USB | ||
- | NB - currently feeding 2.2V P-P is resulting in rather low RF output. Providing more audio than that does result in more RF output, but the levels required seem excessive and I chickened out at about 4V. Cause as yet unknown. | + | ====== Adjusting TX audio response ====== |
- | NB - DI LEVEL is "data input audio level", | + | Remove the top lid of the radio- 8 screws. |
+ | 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 ===== | ===== Navigating ===== | ||
Line 108: | Line 128: | ||
===== Mic pinout ===== | ===== Mic pinout ===== | ||
+ | |||
+ | Pin 8 is towards the bottom of the radio. | ||
- DM | - DM | ||
Line 118: | Line 140: | ||
- BLC | - BLC | ||
- | Pin 8 is towards | + | Abbreviations are from the schematics in the service manual, meanings as yet unknown. |
+ | |||
+ | A known working cable has wiring: | ||
+ | |||
+ | * White - Pin 2 (MIC) | ||
+ | * Red - Pin 5 (SB) | ||
+ | * Black - Pin 6 (HK) | ||
+ | |||
+ | The cable has a PL2303 USB serial chip. |
radios/tk-90.1714847120.txt.gz · Last modified: 2024/05/04 18:25 by m0lte