CQ-DATV now available
Posted: Mon Jun 22, 2020 7:08 pm
The summer solstice, otherwise known as the longest day of the year, is here, marking the return of brighter evenings and what more could brighten up your day than CQ-DATV, Issue 85 is now ready for download In this issue of CQ-DATV Jim Andres KH6HTV explains how to measure your ATV receiver’s sensitivity, the key to a successful measurement is preventing RF leakage from the test signal source, getting into your receiver, except via the desired RF path. This is particularly important if you are using home constructed test equipment.
Jeffrey Borinsky thinks Television is far too easy. Anyone with a smartphone can shoot footage of high technical quality and send it, live or recorded, anywhere in the world. Jeffrey goes on to explain it was not always that way and looks back on the early days of Television Outside Broadcasts.
Ed Joy K0JOY Has come up with a new 23cm antenna. This is a modification of a 2.4 GHz, BBQ grill, parabolic dish antenna normally for on 1.25 GHz (23cm band). Ed has kept the BBQ grill parabolic reflector intact but modified the dipole feed element to work on 23cms.
Trevor and Mike have written another column on the GVG mixer conversion and this one explains the history behind why they started the project and then goes on to investigating, implementing control of the faders and mixer pots in Vmix. Even if you don’t have a GVG panel there is a simple programme in Annex BASIC that will let you test the i2c interface using just the ESP and Arduino micros. If you are spinning your wheels looking for panel this might be something to get working in the meantime.
On behalf of the locked down CQ-DATV production team, sit back and enjoy this issue of CQ-DATV and remember electronic magazines are 100% free of Covid 19.
The download site as always is https://www.cq-datv.mobi/85.php and back issues are available from the CQ-DATV library site at https://www.cq-datv.mobi/ebooks.php. No passwords or subscriptions are required CQ-DATV is a free magazine
Jeffrey Borinsky thinks Television is far too easy. Anyone with a smartphone can shoot footage of high technical quality and send it, live or recorded, anywhere in the world. Jeffrey goes on to explain it was not always that way and looks back on the early days of Television Outside Broadcasts.
Ed Joy K0JOY Has come up with a new 23cm antenna. This is a modification of a 2.4 GHz, BBQ grill, parabolic dish antenna normally for on 1.25 GHz (23cm band). Ed has kept the BBQ grill parabolic reflector intact but modified the dipole feed element to work on 23cms.
Trevor and Mike have written another column on the GVG mixer conversion and this one explains the history behind why they started the project and then goes on to investigating, implementing control of the faders and mixer pots in Vmix. Even if you don’t have a GVG panel there is a simple programme in Annex BASIC that will let you test the i2c interface using just the ESP and Arduino micros. If you are spinning your wheels looking for panel this might be something to get working in the meantime.
On behalf of the locked down CQ-DATV production team, sit back and enjoy this issue of CQ-DATV and remember electronic magazines are 100% free of Covid 19.
The download site as always is https://www.cq-datv.mobi/85.php and back issues are available from the CQ-DATV library site at https://www.cq-datv.mobi/ebooks.php. No passwords or subscriptions are required CQ-DATV is a free magazine