| PA0SNY |
| This page covers only the conversion
of a MARC-set from 11 to 10 meters and a further use with a transverter
to operate it on 70cm. I removed too ancient and no more interesting
projects. I also give details on a Z-match tuner tha Maurice PA9H constructed. |
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MARC set conversion from 11 to 10 meters Since 1980, Dutch Gouvernment legalised the use of the 27 MHz band in FM modulation. These so called MARC-set became cheaper by the week. About 90% came from the same factory and had virtually the same interior (pcb). In these days Heino, PA2HKR (now HB9CVG) came up with a modification that was published in a magazine of one of the major Amateur Radio Leagues in Holland, with a follow-on article in March 1982, containing tips and tricks. The modification consisted in the replacement of a Xtal and the installation of an new Xtal oscillator containing the original 10.240 kHz Xtal to retain the 10 kHz grid. In our version, chanel 22 became 29.700. Chanel 1 was 29.440, and chanel 9 became the home frequency 29.540 kHz for the Project Group PG.540. As I had documented old paperwork in maps, I have retrieved the stencil and the publication for the modification. I scanned it and you will find it here. In Dutch. For the visual aspects I have made several photo's.   The
new oscillator print and
the view to the inside of the MARC set
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MARC set - transverter from 10 meters to 70 cm After the success of the MARC-set conversion, Heino, PA2HKR developed a transverter from 10m to 70cm. Professional drawings were made, and after the succesful project, it was published in Electron in August 1983. My own contribution was the addition of a VFO from 29 - 39 MHz, to use the transverter as a wide FM source on 70cm.  The
transverter: standard components, keeping the price low for beginning
radio amateures
 The complete
10m/70cm transceiver. Used until the FT-8900 came in da house
Here it is: by using 2 Xtals in the transverter, I could select between 430 MHz and 432 MHz: 44 chanels in total. But chanel 9 is a home frequency: ending with .540 MHz |
Antenna Tuner: the Z-match by Maurice PA9H
(so not mine!)
I have no real pictures of my own Antenna Tuners, although I have constructed various. See picture from my old Shacks and you'll see the prove.  Z-match
as by Maurice PA9H
Maurice PA9H built this version. here you will find some details (it is in Dutch but with great pictures on the construction) The reason why I publish this (with permission), is the beauty of the construction! |