The TRX can use repeaters. I added a switch to automatically set the PLL frequency 600KHz lower when the PTT button is pressed. This works but I found out that I made a design error. The TX can transmit when the PLL is not in lock. For simplex this it is not a big problem as you usualy don't change frequency while transmitting.
For repeater use it is a problem though . As soon as the PTT switch is pressed the frequency changes and the TX is turned on. So It will transmit while tuning to the TX frequency. The TX/RX relay will probably prevent transmission because this relay switching is slow. To be safe I will delay switching on the power to the PA.
Another problem is that the repeater stations near to me need subaudio tones. I have no such encoder.
No comments:
Post a Comment