Yaesu FT101ZD
My Yaesu FT101ZD is from 1982.
The transceiver is the MK3 version with the WARC bands.
The previous owner was my father who is also radio amateur.
He bought this transceiver new in 1982.
The transceiver has few transmit ours and is in mind condition.
I cleaned all potentiometers en the deck switch.
I replaced the "killer condensor" in the final.
it's the condensor between the anode of the driver 12BY7 tube and the first final tube 6146B (2 pieces).
The condensor is originaly an 1000pF 1KV
I replaced it with an 1000pF 3KV.
This part will fail in time and puts then 300V on the grid of the 6146B’s, who in turn pull all the current they can get,destroying the tubes and the power transformer.
if you arenot nearby, rendering the transceiver useless.
Click here to see the fotoalbum from replacing the "killer cap"
| GENERAL | |
| Type: | Amateur HF transceiver |
| Frequency range: | 10-160 m + WARC in 12 bands 1.8-2.0 MHz (160 m) 3.5-4.0 MHz (80 m) 7.0-7.5 MHz (40 m) 10.0-10.5 MHz (30 m) 14.0-14.5 MHz (20 m) 18.0-18.5 MHz (17 m) 21.0-21.5 MHz (15 m) 24.5-25.0 MHz (12 m) 28.0-28.5 MHz (10 m A) 28.5-29.0 MHz (10 m B) 29.0-29.5 MHz (10 m C) 29.5-29.9 MHz (10 m D) |
| Mode: | AM/SSB/CW |
| Power supply: | Mains: 100 / 110 / 117 / 200 / 220 / 234 VAC (13.5 VDC option) |
| Current drain/power consumption: | RX: 85 VA A (73 VA heater off) @ mains RX: 5.5 A (1.1 A heater off) @ 13.5 VDC TX: Max 330 VA @ mains TX: Max 21 A @ 13.5 VDC |
| Antenna impedance/connector: | 50-75 ohms / SO-239 |
| Dimensions (W*H*D): | 345*157*326 mm (13.58*6.18*12.83") |
| Weight: | 15 Kg (33.1 lbs) |
| RECEIVER SECTION | |
| Receiver system: | Single conversion superheterodyne IF: 9 MHz |
| Sensitivity: | AM: 0.5 uV (10 dB S/N) SSB/CW: 0.25 uV (10 dB S/N) |
| Selectivity: | AM/SSB: 2.4 KHz (-6 dB), 4 KHz (-60 dB) CW: 600 Hz (-6 dB), 1.2 KHz (-60 dB), with optional CW filter |
| Image rejection: | 60 dB (12-160 m) >50 dB (10 m) |
| AF output power/speaker: | 3 W at 10% distortion / 4 ohms |
| External speaker connector: | 4-16 ohms |
| TRANSMITTER SECTION | |
| RF output power: | AM: ~25 W (50 W DC input) SSB/CW: ~100 W (180 W DC input) |
| Modulation system: | |
| Max FM deviation: | No FM |
| Spurious emissions: | Less than -40 dB |
| Microphone impedance/connector: | 500-600 ohms / 4-pin |
| MISCELLANEOUS | |
| Manufactured: | Japan, 198x-198x (Discontinued) |
| Additional info: | Tube hybrid |
| Related documents: | User manual (3 MB) 12BY7A driver Two 6146B finals |