3-WAY active splitter
This is a 3-WAY splitter with the ability to connect a preamplifier with a large dynamic range and gain up to 18dB. This preamplifier can compensate for split losses. It can also add gain up to 10dB.
Both current and voltage protection are included. The gain of the amplifier can be adjusted from the front panel.
YAESU PTT splitter - RCA output, INH input
Today's standard is PTT output and input on RCA connector. However, the YAESU TRX does not have these connectors. For many users, it is not easy to connect an external device to the TRX that needs a PTT signal.
For this purpose, a simple box has been created that contains two separate PTT outputs on RCA and one INHIBIT input. These signals are connected to the MINI DIN connector of the TUNER. The signals for the TUNER are also pass-through and will not restrict its connection.
The box includes optical isolation of the PTT and INH signals.
Two versions are available - they differ only in the INH input. The first version has INH active when connected to ground. In the second (MK2) version, an internal jumper can be used to set when INH is active.
There are links for:
MK1 version with simply INHIBIT
MK2 version with INHIBIT jumper
An example with a device where RF power is blocked until PTT feedback occurs. Protecting the connected device (here RX Audite) from transmitting into the RX path.
⚠ NOTE: Both jumpers in right position - second jumper settings at picture - jumper settings.
Example of use with Easy Controller 6-2, where the PTT output from the controller unblocks the RF output from the TRX. This watchdog prevents transmissions where the same ANT would be accidentally selected for both TRX - Manual switching and switching from USB or Wi-Fi.
⚠ NOTE: Both jumpers in right position - second jumper settings at picture - jumper settings.
Update at solar site in Eagle Mountains: LoRa APRS digi, WX, MeshCom, Meshtastic, LoRa PR
After a long time I finally found the time and made a day trip to the Eagle Mountains to inspect and upgrade the solar site. The trip got a bit complicated when I discovered that I didn't have the keys to QTH OL7M :) Fortunately it was sorted out - thanks Káťo. We loaded up the ladder and headed for the mountains. The morning rain turned into hot and sweltering heat at 1100m.
I planned to change the batteries and most importantly add new technologies - Meshtastic and MeshCom. I also replaced the SD card in the raspberry PI zero for the LoRa Packet Radio to make both LoRa TRXs operational. Replaced the LoRa APRS WX station etc.
In the end it was a 4h job...
I installed new dipole for 433 and 868 MHz on one boom. 868 MHz is used for LoRa APRS WX station and 433 MHz for MeshCom. There is also new 3el collinear antenna for 868 MHz with 433 MHz filter for Meshtastic.
The power system works by having a main 12V 17Ah battery, this is charged by two solar panels 10 and 20W. My own MPPT charging boards also have battery discharge protection and their own DC-DC converter for 3V3 and 5V. Either board powers 3V3 stuff, like the LoRa APRS Digi and the 5V Raspberry PI zero board. The 3V3 board shuts off the battery when it drops to 11.5V and the 5V board at 12V. The weather station has its own 18650 battery that powers the LoRa APRS WX and the RAK 19003 for the Meshtastic. This metostation monitors and sends the main 12V battery voltage and Meshtastic sends the small battery voltage information. This WX station has its own small solar panel.
2m Es 3.6. 2024 (remote from SV2 holiday)
