Here is the installation manual, which you probably already have. https://www.dnd.hu/uploads/termek_doc/Sirio_SY_27-4.pdf <https://www.dnd.hu/uploads/termek_doc/Sirio_SY_27-4.pdf> Just not sure how to make things add up.
> On Feb 13, 2021, at 12:50 AM, Mark Brantana <[email protected]> wrote: > > Checking the conversions. I think 1/16” accuracy is sufficient, and is about > as close as you are going to be able to possibly guarantee with a hacksaw. I > might use a dremel tool instead, but ok: > A 653mm is 25.71” or 25 11/16” [As labeled] > B 396mm is 15.59" or 15 9/16” [As labeled] > C 338mm is 13.31” or 13 5/16” [As labeled] > L1 848mm is 33.39” or 33 3/8” [*Not labeled but L1 must be the inside sets] > L2 520mm is 20.47” or 20 1/2” (+/- 5mm is 3/16”) [*Not labeled, but L2 must > be the outside sets] > Separation 1 1440mm is 56.69” or 56 11/16" > Separation 2 1240mm is 48.82” or 48 13/16" > > Some of these conversions I just noticed also appear on the right side, so > they all appear correct. > > *I do not know what the connectors are, and I am not sure if I am making the > right assumptions about what L1 and L2 are, so let’s check: > > 2*(A+L1+L2)=4052 OAL using the data for the [neglecting the connectors] and > this is not close to the indicated OAL of 5942mm using data from the 1st row. > Not even close. I am sure the connectors do not take up 74.80”, so this is > curious. > 2*(653+848+520) > > I suspect you must have additional information. What is there does not appear > correct. The key measurement is the one in the middle, the driven component. > The other two are the reflector and the director. They do not appear > proportionally correct, but maybe? It appears that the tubing diameters are > stated elsewhere, as are the other hardware. > > It also appears that these are the tuning lengths, and not the cutting > lengths. My guess is that this is made using some sort of reducer, allowing > you to slide the lengths in and out for tuning. > > I’m confused, too. Could you send the whole plan? This looks like an > interesting design, but it doesn’t make sense to me. > > Mark > N5PRD > > >> On Feb 10, 2021, at 9:42 PM, Gayle Dotts via BVARC <[email protected] >> <mailto:[email protected]>> wrote: >> >> Gayle Dotts WB5DOT...I talked on Ten-Ten last night, first time I had gone >> on the air in over a year. My problem in HF is a Imax200 20 feet up that I >> could only reach out 6 miles and a Siro SY 27-3 beam maybe 15 feet up and am >> having problems with my measurements as to why I am not getting out. Could >> i get someone to look at it my element measurements for me?? I think I have >> got then screwed upI really need that beam to work for HF. I am confused >> with the plan sheets Siro sent me relating it to the beam for 10 Meters! >> >> I really do appreciate it!! >> Gayle Dotts WB5DOT >> 713-203-3992 >> <20210210_213447.jpg>________________________________________________ >> Brazos Valley Amateur Radio Club >> >> BVARC mailing list >> [email protected] <mailto:[email protected]> >> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >> Publicly available archives are available here: >> https://www.mail-archive.com/[email protected]/ >
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