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There's a delay before newly submitted reviews are Approved and posted in eHam's reviews. eHam's Product Reviews are a personal opinion database of ham radio related products and services.Ģ. Keeps it's own with the Drake SPR-4 and the Panasonic RF-2200!ġ. The DX-390 is a strong performer on the AMBCB. With the Antenna Tuner feeding the External Antenna Jack I'm able to reduce the overload an clearly receive DX Stations on the AMBCB. The Antenna Tuner is a Godsend here in Portland due to the strong overload from Many local radio stations. I've got the DX-390 attached to my 80 foot Random Wire Antenna, through my SGC-230 Antenna Coupler, and finally through my MFJ Antenna Tuner. Finally I performed the Anti-chuffing MOD. This protects both the Whip Antenna and External Antenna inputs, to the RF Transistor, from Static Discharge. I added 1N4148 Diodes from the Antenna Input AFTER the External Antenna Jack. The difference is that the "PO" Terminal goes to Ground rather than to Vcc on the KDA5A. I added a Bistable Flip Flop Circuit, from China, to turn the LED continually ON or OFF with a single button press. I removed the incandescent Dial Lamp and installed a White LED. I completely disassembled the radio to perform the MODS.
Homebrew rfx 150 update#
UPDATE : I just completed three MODS on the DX-390. The Realistic DX-390 will be my new Outdoor General Coverage Receiver! I'm apprehensive to bring the Panasonic RF-2200 out in the field due to its rarity, and replacement cost.
Homebrew rfx 150 portable#
Very handy, unlike the Panasonic RF-2200, my other AMBCB Portable DX Hound. Lastly, I'll replace the defective Dial Lamp with a LED that can be turned On/Off indefinitely.Īpparently the AM Ferrite Antenna is disabled when the EXT ANT Jack is used. I will also disable the mute function, used when tuning. Instructions are available on the Internet. It's really important to protect the 1st RF Amp FET from Static Discharge. MW reception is solid with the Built-in Ferrite Antenna. SSB, CW, and even DATA Modes such as FT8 are stable enough to be easily decoded. Sensitivity is excellent and the radio has a Adjustable BFO.
Homebrew rfx 150 full#
This is a solid portable, with full coverage from 150 kHz through 30 mHz and the US FM Broadcast Band. The going rate for a working DX-390 in 2021 is about $80. Otherwise, everything is intact and electrically perfect. Has a light rust stain on the speaker grill from a spill, a set of dead D cells, and a burned out dial lamp. It came from the estate of a local, well known ham. : I just picked up a RS DX-390 on eBay for $25.
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