Testing Converter Functionality: DIY Methods & Evaluating Parameters, Analog Tuner Inspection

the question is how to check the converter whether it is functional (can it be done at home without any special equipment) or, for example, by comparing some parameters, it is possible to find out if it is not burnt, and the second question is whether you can check the analog tuner somehow. e.g. by buying it on the stock exchange (so as not to get on the roller and buy a broken one


Thank you in advance for your help
greetings
Cuba

never buy equipment without demonstration - the lack of demonstration results in a price reduction of 50% ... but who needs a pile of scrap metal ... even for 5 zlotys.

Okay, what about the converter, I have two and I do not know how to check them, and I do not have a tuner from everybody and I do not want to buy a tuner as converters do not work
Greetings

CONVERTERS are probably not needed anymore - after all new equipment - full bandwidth -

Added after 3 [minutes]:

why buy a tuner with an old band-
one out of 10/20 / it is possible to tune well - converters bring noise -
pity such pretty ears for these noises ..

Added after 2 [minutes]:

I'm sorry -it's about SAT -MY WTRETY ARE WITHOUT ANY AGENCY-
I'm sorry Cuba.

Added after 11 [minutes]:

You must have an antenna - a dish and some simplest reception. sat- used
analog ones cost PLN 20 - the risk is always there, but if it is a set, it's worth checking.

This is a lamentation - because the progress is very big - and those converters that were good yesterday - today are invalid - just because of noise and other properties.

I would not insist on satellite TV - it would be interesting
direct to receive digital terrestrial TV - on one channel 10 stations - each without reflections - satellites are above us 100km above the ground ...

If you still have your roof, you can look for something in the sky -
from the balcony it's a bit worse .....

Thanks for your help, if there is anything else wrong, I'll talk to you
thx again