Hello Roger,
?Thanks a lot for your useful advice, in my country there is an approved vendor, I will buy the small tinySA Basic and an analog multimeter, a Sanwa EM7000.?
You say with the Ultra version, cannot be made with the Basic one? The only difference I notice is the frequency coverage.
This canadian guy has made an alignment with the Tiny:
I do not know if I will able to align the Drake R4B tube? receiver is more complicated or send it to be serviced: (pages 31 to 43)
? ?
And a Drake SPR-4 transistorized but the alignment seems a bit complicated too, (page 22):
?https://www.wb4hfn.com/DRAKE/DrakeManuals/PDFDOCS/SPR-4_Manual.pdf
Kind Regards.