Hello!
the most porblem here,some dvb t package and dab+ package,using the same freqency,means,the signal will be blocked each other,and in dab reception of only one package its posible!
from the time before satellites was avalible in beginning of 1987,our cable operator have still installed a real big terestial antenna system on 2500 meter see level,to transmited radio fm channels,from the exposinal postion,and tv channels,to the cable Hq down in the valley,before dvb t was coming was very intresting ,to look,the analog tv,always when swiss tv number 2 sf2 swtich off the signal,and the weather,change to from good to bad athmosphare deep preasure,it was posible to see a signal of nederland 2 test picture on this freqency,on sf1 after channel swtich off in the night,was posilbe to look rtr terestrial from luxembourg!,now all analog channels swiched off!
there are difffrent ,sending charaktieristics of each dvb t transmiter,most of them have a speread "wide "signal,with a large distance,in more direction,but there also some,that is only focused in one direction,with lower transmit power!
the the situation looks that the dvb t signal,from zurich,on 2500 m seelevel ist higher of a distance,of 130 km,then signal,from a sender,locared only 50 km away.because signal focused more in other direction,the funny thing,in the test,we got also the complete dvb t package from nürnberg germany,with a distance,of 700 km!!
when,you have free view,and no object between,then the dvb t faraways reception can begin,at its best
in normal conditions,with outh the use of big external antenna systems,and signal boosters,its nearly imposilbe to catch signal from far away!
near the german boarder where my sister live,a 10 indorr booster antenna is enough to catch 27 channels from austria germany and switzerland at one time!