DG1JAN 🇪🇺Looks like there is sufficient space in the outdoor case ☺️ power supply for 28V,12V and 5V will be mounted on the backside of the aluminum plate. Question: LTE filter after bias-T or before? (Seen from Pluto). #qo100 #latetothegame
Gary @N8DMT@DG1JAN LTE filter may not pass DC. (Check with ohmmeter). Suggest Pluto RX —— LTE filter —- Bias-T. Have fun! 73
@n8dmt thx, yes haven't checked yet. Maybe I will go and get a 75Ohm Bias-T instead. Like to have only one 50/75Ohm junction
@DG1JAN I typically do not worry too much about 50/75 ohm differences (1.5:1 VSWR impact) as long as there are not too many of them - and if not trying to cover too broad of a frequency range. That looks like a great setup there. Wish we had a geo bird here in North America! 73
P.S. Have ADALM Pluto here as well for both test equipment (w/SATSAGEN) and misc. ham radio use.
P.S. Have ADALM Pluto here as well for both test equipment (w/SATSAGEN) and misc. ham radio use.
Ingomar dl9ET@DG1JAN Pardon my ignorance but what's the purpose of the 4G filter?
(I am already vaccinated, if that context helps :-))
@DG1JAN found this https://www.darc.de/fileadmin/filemounts/distrikte/o/ortsverbaende/38/Bilder_für_die_HP/Projekte/Empfangsverbesserung_QO100_Bericht_1.1.pdf and since these filters are dirt cheap I ordered one as well and will give it a try.