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FM5GB Martinique flag Martinique

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Beaming US west coast

 

Antennas :

-Cushcraft log periodic ASL 2010 (20 thru 10 m)

-Cushcraft 5 elements 6 meter beam

-Quarter wave sloper (80 m)

-Fritzel FD4 windom (40 m)

-B & W folded dipole (30 m).

-Loop ALA 1530 and ALA 100LN (21 m loop)by Wellbrook (for VLF & LF DXing)

-On roof mounted 2.3 kw solar panel array.

I was first licenced in France in 1980 (call was F6GOC). When I moved to the Caribbean in 1991 I got my actual callsign FM5GB but I have'nt been active until 2010 when I changed the hobby : I stopped most of my scuba diving activities (I'm still an **CMAS instructor) and came back to Ham radio. I operate mainly phone and digital modes, but my strongest interest is LF and VLF dx-ing. I have a great log filled with Airport beacons and DGPS stations ranging from Northern Canada to Southern Brazil and few Europeans.

I'm currently active on JT65 using HB9HQX super software. My max power in this modee is 15 (fifteen) watts.

Please note  : I only confirm JT65  complete QSOs. Report confirmation is mandatory from both sides. (R-dB, RR73 or even RRR if you live on the moon) I will send your card back if you're not in the log for some reason.

Please don't call on my frequency if you're not the one I'm coming back to; it makes it just more difficult and long. The Code of Conduct is also valid in JT65 mode.

 

QSLing : Direct only  (no more eQSLs no buro membership)

SWL reports welcome & don't need return postage.

Sorry no bureau membership !.

Please include Self adressed Envelope and return postage (my local post office does not accept IRC's).

Answering CQ calls is the way I operate most of the time.

73's to everybody, hear u soon or see u on my waterfall !

Another view of the 50 foot-15 meter tower (CTA self supporting, tilt over & crank up made in France) which I had to crank down because of a wind damage; and the solar panel mounted on the roof.

 

Big multiple weekend project : reboxing  the Anan 200D into a home made enclosure...

 

Finished SDR transceiver

Rear panel with the current sensor module in its diecast aluminum box.

The 100 w PA unit sitting on its new heat sink with double fan cooling underneath.

Two fans for the 100 w PA and one for the power supply unit.

 

The modules (all home made except the 10MHz reference) installed in the box  : power supply unit, PTT buffering & balanced to unbalanced line in circuit, GPSDO module (BG7TBL), front plate interconnect module with reference switching and the small bootloader switch with led status indicator. The rear panel has all in and outputs from the transceiver including a coax relay for Pure Signal crosstalk/sample switching.

Flat ribbon cable with ferrite clipon from Orion board to interconnect board. The transformer on the latter is for balanced-to-unbalanced line in from the mike preamp. Upper relay is for speaker out switching, lower is PTT relay. The connectors bring all IO from the Orion board to  adapting circuitry or to back panel.

Orion board in its shield with dedicated fan for the FPGA. The small module on top with the two transformers picks up the two balanced audio channels on J8 and J9 on the Orion board and provides a stereo ouput for the front panel phone jack : the audio quality is superb !

Power supply, GPDSO, LED and font panel board with 10 MHz reference coax relay switching, Shielded Orion board. Bootloader switching board.

Internal layout

The power supply with low noise regulators providing 12, 5 & 3.3 V to the Orion board.

Front panel after modification and (Anan !) Blue painting (has changed slightly from the first design)

A portion of the original Anan 200D back panel was cut out including the most difficult to achieve drilling. Note : the small jack socket (former balanced left speaker out) at the left of the power supply socket is now used to input the shunt voltage from the positive line to the front panel ammeter.

Rear panel. You notice the Anan blue. PS is the Pure Signal sample input from the amplifier(s). GPS antenna input at left. At upper-middle is the balanced line input from the the mike preamp.

Left side warm air exhaust

 

Finished ! Mike signal goes thru DBX balanced preamp. No more birdies from any switching power supply, no more RFfeedback even with a kW ouput into the antennas which are just over the shack ceiling. Note : the bootloader switching on the lower middle; the switch is only accessible thru a hole with a plastic stick or dental stick and has a led status indicator.

 

The equipment presently :

- EX-Anan-200(D) SDR transceiver from Apache Labs made in India transplanted in a new home made aluminum box, with new linear power supply; balanced line input, PTT buffer circuitry, GPS DO module, lots of shielding and improved cooling for the final amplifier.

- Expert 1K-FA linear amplifier from SPE Italy (fully automatic amp, antenna switch and ATU)

- Perseus direct sampling SDR receiver from Microtelecom Italy (0-30 MHz).

- Excalibur G31DDC direct sampling SDR receiver from Winradio Radixon Australia (0-30 MHz)

The SDR, the 1K-FA linear, the Perseus receiver and all digital decoding  and logging programs follow the frequency thru DDUtil ( http://k5fr.com/ddutilwiki/index.php?title=Main_Page). Rotator is controlled thru EA4TX interface with a mouse click in HRD rotator.

The computer is Intel I7-4770K quad core @4.0 GHz (slightly overclocked); 8Gb ram 0.5Tb SSD  Win7 64 pro. It will run all SDR gear simultaneously (<30 % processor use) with no dropout even when watching a HD movie simultaneously !

Best  73s  from  FM5GB   !

8096304 Last modified: 2017-05-14 23:18:58, 8763 bytes

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