cavity filter part 1
hello part 1 of mechanical construction of a filter for 433mhz enjoy or how do you make one with a lot of head aches
hello part 1 of mechanical construction of a filter for 433mhz enjoy or how do you make one with a lot of head aches
Пікірлер: 20
Good job
the rsgb vhf uhf manual from 1990 ish will be posting an update soon the bandspread is close to 7-8 mhz hope this helps
Where can I find the pictures of the scheme that appears in the video?
hola ese libro donde lo consigo gracias ce4ule ricardo chile
Hi Steve, nice work. Do you have any background on the relationship between filter 'Q' and filter volume? I know the greater the volume, the greater the Q, but could do with the maths to link the two!
@steveedwards90
4 жыл бұрын
Sorry don't have access to the maths but you are correct the greater the volume the higher the Q these did not quite work needed an extra cavity on both to achieve 1.6mhz seperation as they stood 7.6 mhz was easy
3 жыл бұрын
@@steveedwards90 hi Steve, thank you for these videos. So, you HAVE succesfully used 3 of theese cavities on each side for the 1.6MHz repeater shift? With the actual repeater?
@steveedwards90
3 жыл бұрын
@ no I only ever made 4 2rx 2tx my tests showed for 1.6mhz 3 a side would be needed for 7.6 2 a side would be effective sorry I did not pursue this project as diagnosed with throat cancer so all on hold be safe
hi ! good video! I just found it... question.. could you share the name of the book that you are showing ?
@steveedwards90
Жыл бұрын
Read the comments it's in there
@AlienRelics
Жыл бұрын
RSGB (Radio Society of Great Britain) VHF-UHF Manual.
i need to know the name of that book
@in3elxroberto155
2 жыл бұрын
Steve says it's "Vhf manual, circa 1992", but I couldn't find anything. It would be interesting to find a photo of the cover to figure out exactly what version it is.
What Is the name of this Book?
@steveedwards90
5 жыл бұрын
Vhf manual rsgb radio society Great Britain circa 1992
@in3elxroberto155
2 жыл бұрын
@@steveedwards90 I'm looking for it, but can't find it. More info or photo PSE TNX.
@in3elxroberto155
2 жыл бұрын
@@steveedwards90 What color is the cover? Do you have a picture? Thanks
@steveedwards90
2 жыл бұрын
@@in3elxroberto155 white with red writing
@in3elxroberto155
2 жыл бұрын
@@steveedwards90 Thanks. I have only found the orange or blue one on ebay. Red none.