Yaesu's classic, top of the line HF transceiver for contesters and DXers is
probably the only ham dual-receiver radio that does true diversity reception
|FT-1000D Synchro Mod by G3TKF|
If you have an FT-1000 with the BPF-1 option, and are into HF weak
signal DXing, this is for you. Although not for beginners,
it should be no problem for hams with some home building experience.
This simple 'no-holes' mod adds a lot of functionality, yet
requires little more than a DPDT
5V relay. It synchronizes the tuning
of both the main and sub receivers to the main tuning knob, making
antenna diversity reception so simple and painless that you will
wonder how you ever did without it. Diversity is a powerful technique-
the increase in
intelligibility and reduction in operator fatigue often border on
From the Yaesu FT-1000 Operating Manual, page 31:|
"...the vast potential for optimizing reception of different signals using diversity reception with the FT-1000 is largely unexplored. We invite you to experiment with these modes, and we hope you share your findings with others..."
|Schematic: The Main encoder connects directly to Control board connector J5031 as before- its MDØ1 and MDØ2 signals are also cabled to the relay N.O. contacts. The SDØ1 and SDØ2 signal paths from the Sub encoder are broken and the relay is inserted in series. Connector J5032 is normally switched onto the Sub encoder- when SPOT is pressed, the relay operates and J5032 switches onto the Main encoder in parallel with J5031. The relay coil can pick up 5V from either connector. Note that this is a 'no-holes' mod using added connectors, and is easily reversible!|
Synchro Mod User Tip:|
Slow day on the bands? Propagation not so good? You can monitor two different bands simultaneously. For example, enter 24.890.00 in the main rx and 18.068.00 in the sub rx and tune around both bands using the main VFO- or try 24.890.00 + 24.930.00- you can monitor both the phone and CW segments on a band.
Photos, Pictorials, and Parts List for the FT-1000D Synchro Mod
FT-1000D Diversity: Why DX in 'Stereo'?
This series still under construction- watch for changes and additions!
|Send Comments to K3KY||The Low Bands||PREV|
|HOME||K3KY's DX Toolbar||Synchro Mod Details||NEXT|