CAPTAIN ELECTRIC HOLLAND
your partner for product development
Our services
Innovative Creations
Crafting special designs for electronic applications, we take projects from concept to final production. Our expertise extends to developing HW prototypes, serving as a platform for embedded software developers.
Generic Electronic Designs
More than 5o years experience in the design of electronic equipment and total solutions.
Over the last decades in cooperation with the software
industry, New applications in this fast changing domain becoem the nature of these services.
Medical Electronics
Electronic engineering became more and more a major component in the medical domain. Various products and applications has been developed in the domain of Neurology. Conversion of existing knowledge is converted into tele medical treatment..
Maritime Electronics
Integration of good functioning vintage control equipment with modern navigation applications is often a blind spot in the process of refitting pleasure craft. Various special designs was developed for market leading nautical suppliers.
HAM Radio Designs
Despite state of the art SDR HAM radio equipment, There is always a missing part for specialized use of this out of the box products. Missing pieces not honored by the manufacturers of ths equipment.
HAM-Portfolio
HAM Radio Designs
Special designs for the HAM radio Community
Even a standard product like a HAM Transceiver like an ICOM 7300 or a QRP-Rig 705 needing a special adaption to the use.
Interfaces, special audio adaption or an extension to place where the backside of the RIG is not accessible. This is the situation for an ICOM 705. This transceiver has only one general multi band antenna connection. This is a problem when building in this rig in the dashboard of a car or in a carry on enclosure like the products of W2HVH.com. In this case a Diplexer is required.
With antenna cabling sometimes only one coax cable is available for the required two antenna's.
For these specific requirements are this solutions designed and produced. With the use of high quality materials able to withstand the high reqy=uirements of the antenna signals.
Product HAM-01
Special designed for the with an ICOM 705 QRP radio,
The small size, the positioning of the BNC connectors at one side is this the ultimate solutions for connecting the two different antennas with this QRP.
Made with high quality double sided PCB board, in a strong aluminium casing. The use of High voltage (1 kV) capacitors guarantees a good protection against damage of static discharge or mismatching the antenna. Made in the USA
Generic Specs: 50 Ohms, 30 Watt max.
Loss HF bands. < - 0,1 dB, SWR < 1,05 (average)
Loss VHF band < - 1,8 dB, SWR < 1,8 (average)
Dimensions: 1,5'' (2'') x 2,8'' x 1''. Weight: 2,5 OZ.
On Stock. Price USA, incl. Postage COTUS, $ 75,- *)
Payment Zeyye or PayPal to jan@vanderloos.com
*) postal options and pricing outside US on request
Diplexer DLD-24-6
(ICOM 705 Compatible)
A smaller version of the DLD-24-6
The maximum capacity is 10 Watts. When running the QRP on a lower than 10 Watt output, this may be a good solution.
Lile the DLD-24-6, this Diplexer is also equipped with High Voltage Capacitors. Contrary other manufacturers, delivering Diplexers for the VHF/SHF bands, SMD components are a No-Go. The max Voltage is 100 Volts. Similar devices with standard brown ceramic capacitors in the RF output environment are also a No-Go.
The locations of the connectors makes this Diplexer suited for the use as a coxa-antenna combiner
Made in the USA
Generic Specs: 50 Ohms, 10 Watt max.
Loss HF bands. < - 0,1 dB, SWR < 1,05 (average)
Loss VHF band < - 1,8 dB, SWR < 1,8 (average)
Dimensions: 1,9'' (2,5'') x 1,8'' x 0,75''. Weight: 2,2 OZ.
Dimensions: 49 mm (74 mm) x 45 mm x 19 mm. Weight: 63 Gramm.
On Stock. Price USA, incl. Postage COTUS, $ 60,- *)
Payment Zeyye or PayPal to jan@vanderloos.com
*) postal options and pricing outside US on request
Diplexer DLD-24-5
(ICOM 705 Compatible)
Diplexer explained
A Diplexer is a 3-port passive device that allows two different frequencies to share a common communication channel. It consists of two filters (Low Pass and High Pass)
tuned at different frequencies connected to a single antenna. Both the signals need to be at different frequencies by a significant value, so that filters can easily split them.
Duplexer explained
A Duplexer is a 3-port device that allows the transmitter and receiver to use a single antenna, while operating at the same/similar frequencies. It is a device that allows two-way communication over a single channel by isolating the receiver from transmitter while transmitting. In a duplexer there is no direct path between the transmitter and receiver
Despite this clear difference even well-known manufacturers and even dealers are using the term Duplexer for a Diplexer. Leaving behind confusion about the functionality of the device.
On demand of the users of transceivers with a single mixed (HF & VHF/SHF) antenna output, like the ICOM 705, or the Yaesu FT-818, this TRI-Band diplexer is designed and produced.
When these radios are built in, like in a car of POTA-GO-PACK, it’s evident that plugging and unplugging the antenna is not a feasible option.
On request of W2HVH, specialized in manufacturing these specialized GO-Packs, Captain Electric Holland, WØJWL, developed and manufactured this very needed Diplexer in small dimensions and weight. Resulting in Model DLD-24-5 and 6. Products capable to serve the required split in frequencies and, important, dealing with the high voltages when antennae are out of tune. What often happened in a POTA situation. Therefore, High Voltage 1 kV capacitors are mandatory. This instead of cheap brown and even SMD capacitors with a max. 100 Volts limit, as observed in other available diplexers, are for this application a no-go. And of course, the lay-out (traces) of the printed circuit board is important to deal with these high voltages.
Model DLD-24-5 is capable in transferring 10 Watts and has the connections at two different sides.
Model DLD-24-6 is more equipped for higher power, up to 30 Watt.
Connections at one side. For easy positioning in the GO-Bag.
The DLC 24-5 and 6 can also be used to combine two different transmitters over one coax cable and split the signal at the antenna’s location. (Not tested for 430 MHz)
Specifications:
Diplexer Model DLD-24-6
30 Watt Max. Imp. 50 Ohms. BNC (F)
Loss figures and SWR
Loss SWR
7 MHz = < - 0,05 dB < 1,02
14 MHz = < - 0,19 dB < 1,06
28 MHz = < - 0,26 dB < 1,15
50 MHz = < - 0,30 dB < 1,60
145 MHz = < - 0,87 dB < 1,80
430 MHz = < - 1,02 dB < 1,40
ISOLATION HF <> VHF @ 7 MHz = - 67 dB
HF <> VHF @ 144 MHz = - 46dB
Dimensions: 1,5’’ (2,0’’) x 2,8’’ x 1’’
40 mm (53 mm) x 70 mm x 25 mm
Weight: 2,5 oz (70 gram)
Diplexer Model DLD-24-5
10 Watt Max. Imp. 50 Ohms. BNC (F)
Loss figures and SWR
Loss SWR
7 MHz = < - 0,04 dB < 1,01
14 MHz = < - 0,06 dB < 1,05
28 MHz = < - 0,18 dB < 1,00
50 MHz = < - 0,30 dB < 1,60
145 MHz = < - 0,79 dB < 1,80
430 MHz = < - 1,10 dB < 1,41
ISOLATION HF <> VHF @ 7 MHz = - 68 dB
HF <> VHF @ 144 MHz = - 46dB
Dimensions: 1,9’’ (2,9’’) x 1,8” x 0,75’’
49 mm (74 mm) x 45 mm x 19 mm
Weight: 63 oz 2,2 oz (63 gram)
Jan W. van der Loos
The creator of this product
Active since I got a shopping bag with a collection of components to build a crystal radio at the age of 9 years. Got infected by the electronic virus. Starting my career. Witnessed and contributed to the development of the electronic era. Spent some time on the Technical College, various universities, cherry picking the knowledge I needed for my career. Was a HAM from the age of 12 to 21. Migrated to digital electronics. In 1972 to the world of Microcomputers. Worked many years in the utility sector, moved to the world of system design and later general IT project management. Leading the innovation R&D projects like Smarcards, MMI, AI, SCADA, Avionics, Banking and even HIPAA implementation in medical IT scene. Multidisciplinary knowledge.
The last 10 years developing medical devices for neurologic applications.
In the maritime sector I designed and implemented a various set of interfaces for the refitting of luxury yachts.
Lived in The Netherlands, worked all over Europe, and became Internet Nomad in Portugal and Spain. Now also active in the USA. Collected my FCC licenses up to Extra. ARRL VEC and ARES. Call Sign WØJWL.
Electronic Designer