Tested this magnetron on sperry marine S-band downmast transceiver. Found magnetron current good for short pulse, medium pulse and long pulse. Take down the magnetron current value as a gauge to predict the magnetron life span for 3-6 months usage. For ship owner who is budget constraint or vessel intend to sail to scrap yard. This magnetron would serve the purpose.
Monday, April 6, 2020
Tuesday, March 10, 2020
Kelvin Hughes MDP-A5 SVDR DAU convert to MDD Radar for testing Saab R4 AIS interface purpose.
Try to load MDD software into VDR system. Start up and found No MTI and system show slave mode. Connect AIS signal and was able to show on screen.
Then swap the Manta vdr interface pcb FSD-A202 with Manta Radar interface pcb FSD-A223, system detected this pcb and change from No MTI to Tx2. Run simulate mode, it shows very good simulated echo with real AIS targets on screen.
Sunday, March 8, 2020
Sperry tabletop ecdis vmft convert to Radar vmft V2.0.5.850
Previously use as vmft ecdis.
Now it can be use as a standalone radar connected as interswitch to other radar. As the specification of the motherboard is relatively low, run the most early software and connect to BME X-band. 3-4Arcs can be shown on display transmit with PM at 12 nm.
Monday, February 17, 2020
Sperry vmft/JRC 9110/Saab R4 AIS/KH VDR/ Furuno GP150/NSR AIS/Sperry dual Mk1 gyro with switch over unit.
If we can setup a workshop to simulate a vessel Navigation equipment and allow technicians who are not familiar with marine equipment to hands on and play with it, we can train out a very good technician in very short time. This is what we believe:-)
Wednesday, December 18, 2019
Sperry BME X-band PM unit water ingress
There are few occasions whereby PM unit ingress with water and after a prolong period, the PM unit causes system to behave abnormal due to system 12Vdc has been pull down.
Please see PM unit after dismantle.
Friday, December 6, 2019
Hatteland monitor JH23T12 FUD-AA1-AOAA Reason for failing
Hatteland monitor was one of the type approved marine grade monitor in the market. Why do hatteland monitor fail to work after few years of continuous operation on ship? One of the main reason was the HRX cable connect between the LCD screen and the control board, insulation breakdown causing shorting internally. Please see cable responsible for causing monitor to fail.

Tuesday, August 20, 2019
Dismantle sperry BME motor
Using hand to rotate the motor found not rotating smoothly. Dismantle the motor and found 6 pieces of bearing/gear inside.Top 3 pieces of bearing/gear, bottom 3 pieces of bearing/gear. Please see photos
below:
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