b5x42a_03

siteadmin (siteadmin@undisclosed.example.com) — 2024-05-25T21:46:31+00:00

Philips B5X42A/03 Broadcast receiver from 1964. The /03 model comes with FM band 87.5 - 108MHz! * *

start - [Tube receiver restauration]

siteadmin (siteadmin@undisclosed.example.com) — 2024-05-25T21:45:43+00:00

Completed * Random wire antenna * Diversity RX with 2x Kenwood TS590SG (Prototype) * LiFePO4 battery packs In Progress On Hold * GPSDO (On Hold) * Remote antenna switch (On Hold) * Rotor Control (On Hold) * Symmetrical L tuner (On Hold) Ideas * Hacksaw blade sideswiper * Linked Dipole * APRS Weather station Notes * QRSS notes * DXLog notes * QMX notes Tube receiver restauration * NSF 234A * B5X42A/03 *

nsf_234a

siteadmin (siteadmin@undisclosed.example.com) — 2024-05-25T21:23:57+00:00

NSF 234A Broadcast receiver from 1948.

random_wire_antenna

siteadmin (siteadmin@undisclosed.example.com) — 2024-04-06T20:58:57+00:00

Random wire antenna An antenna with a length of 17.6m or 58ft (not so random). Works fine on all bands from 40m - 10m. I use it with an old Mind Fucking Junk 971 tuner and 8 radials of about 6m long and put it up as a sloper from my 12m spiderbeam pole when I go bike portable to my favorite /p spot. See

qrss_notes

siteadmin (siteadmin@undisclosed.example.com) — 2024-04-06T20:54:46+00:00

QRSS Notes * QRSS Plus * QRSS Knights Group * New Age Of QRSS * Difference between QRSS, FSKCW, DFCW QRSS Grabber software * Argo * FSKview Known QRSS Grabbers *

linked_dipole

siteadmin (siteadmin@undisclosed.example.com) — 2024-04-06T20:50:39+00:00

Linked Dipole * * *

qmx_notes

siteadmin (siteadmin@undisclosed.example.com) — 2024-03-28T11:16:11+00:00

QMX Notes * Fldigi audio level *

lifepo4_battery_packs

siteadmin (siteadmin@undisclosed.example.com) — 2024-02-17T19:50:39+00:00

LiFePO4 battery packs Building some battery packs for /P activities. After a year of usage I concluded my 20ah Lead-acid battery is not fit for the purpose of power source for hamradio portable operations. Links EVE C40 40135 20ah Charger Power poles Balancer cables 4S 30cm Battery alarm Insulation paper 4s2p battery bracket for 40135 cells Powerpole assembly Box

aprs_weather_station

siteadmin (siteadmin@undisclosed.example.com) — 2024-01-24T21:37:13+00:00

APRS Weather station Some inspiration: * TK5EP APRS Lora Weather station

diversity_with_2x_kenwood_ts590sg

siteadmin (siteadmin@undisclosed.example.com) — 2024-01-24T21:24:16+00:00

Diversity RX with 2x Kenwood TS590SG 2 Kenwood TS590SG tranceivers can be connected together and one can function as subreceiver. This is very useful when using a separate RX antenna. Firmware 1.04 minimum required. See manual page 60 - 61 of the TRX to see how to connect two of them.

aprs_weather_station_in_progress

siteadmin (siteadmin@undisclosed.example.com) — 2024-01-24T09:26:29+00:00

APRS Weather station APRS Weather station using an ESP32 Inspiration: TK5EP APRS Weather station TK5EP APRS Weather station code

hacksaw_blade_sideswiper

siteadmin (siteadmin@undisclosed.example.com) — 2023-12-09T23:31:54+00:00

Hacksaw Blade Sideswiper First prototype was not a success. Apperently 8 teeth saw blades work better than 12 teeth saw blades. Nail file keyer

gpsdo

siteadmin (siteadmin@undisclosed.example.com) — 2023-11-30T22:26:05+00:00

GPSDO Veron A32 GPSDO project Atmega 328P Burn the bootloader and upload the firmware using an USBasp programmer. Burn bootloader Download breadboard-1-6-x.zip from ArduinoToBreadboard Create a folder named hardware in the Arduino sketchbook folder and extract the breadboard folder into it. Make sure USBasp is using driver

symmetrical_l_tuner

siteadmin (siteadmin@undisclosed.example.com) — 2023-11-28T20:59:21+00:00

Symmetrical L tuner Stepper motor control with DRV8825

rotor_control - created

siteadmin (siteadmin@undisclosed.example.com) — 2023-11-26T14:31:06+00:00

Rotor Control

dxlog_notes - created

siteadmin (siteadmin@undisclosed.example.com) — 2023-11-26T11:03:00+00:00

DXLog notes

20230708_210808.jpg - created

siteadmin (siteadmin@undisclosed.example.com) — 2023-11-22T21:53:20+00:00

20230708_210823.jpg - created