Antennair Quadrant DVBs transmitter DTX1

Digital ATV - The latest generation, cutting edge ATV - Please discuss it all here.
Forum rules
This forum is run by the BATC (British Amateur Television Club), it is service made freely available to all interested parties, please do not abuse this privilege.

Thank you
Post Reply
User avatar
Pd0hni
Posts: 42
Joined: Thu Feb 12, 2009 10:20 am

Antennair Quadrant DVBs transmitter DTX1

Post by Pd0hni » Tue Feb 20, 2024 2:40 pm

Hello all,
A few years ago I bought the Quadrant DVB transmitter from Antennair.
The transmitter works fine on 70cm DATV here in Holland.
But now I have a question that I can't quite figure out.
There was also a second print that could be placed on the board
but I don't know what this is for.
Can someone explain to me what the second print is for? ?

Kind regards Jan
Attachments
1-0.jpg
1-0.jpg (38.59 KiB) Viewed 609 times
IMG_20240219_092403X.jpg
IMG_20240219_092403X.jpg (108.15 KiB) Viewed 609 times

User avatar
G3GJA
Posts: 339
Joined: Sun Nov 20, 2011 3:44 pm

Re: Antennair Quadrant DVBs transmitter DTX1

Post by G3GJA » Tue Feb 20, 2024 3:23 pm

Jan

It allows you to run two separate programmes simultaneously in the same RF output.

Selection of the programme would be by changing the PID numbers in the receiver, sou you would use something other than the usual Video 256 and Audio 257 to get the second programme.

The bitrate/symbol rate needs to be at least double that of a single channel.

Clive, G3GJA

User avatar
Pd0hni
Posts: 42
Joined: Thu Feb 12, 2009 10:20 am

Re: Antennair Quadrant DVBs transmitter DTX1

Post by Pd0hni » Tue Feb 20, 2024 3:42 pm

Okay Clive,

Thank you for the explanation.
I had no idea what I could use it for.
Also because the manual states that it can also be used on other frequencies.
Such as P1 / for 70cms - P2 / 1248Mhz and P3 / 1275Mhz
But I must have misunderstood that.

Jan / Pd0hni

Post Reply

Return to “DATV - Digital ATV”