[MAMS] 47 GHz

[Zack Widup]

Yeah, I looked at their selection. For my purposes 1 foot of the
rectangular bras tubing was plenty. I did get the aluminum stock from
McMaster-Carr and it was delivered the day after I ordered it.

Probably for the circular waveguide the nearest English unit size of brass
tubing (also available in most of the hardware stores around here) will do.
Since these transverters I'm making are one-up assemblies and don't have to
mate with anything commercial, they should do fine. One of the joys of ham
radio.

73, Zack W9SZ


On Mon, Oct 31, 2011 at 10:24 AM, Dr. Gerald N. Johnson <geraldj at weather.net
> wrote:

> McMaster-Carr also carries those brass parts, and some in 3' lengths to
> save on splices for longer runs. www.mcmaster.com. Look for miniature
> brass tubes. They also have round metric brass tubes that can be handy
> for replicating European yagi designs on microwave. They don't admit
> they are K&S Engineering products that you find in hardware stores and
> hobby shops.
>
> 73, Jerry, K0CQ
>
> On 10/31/2011 8:41 AM, Zack Widup wrote:
> > I believe I have everything I need to make my 47 GHz system now. I made
> > duplicates of the DB6NT boards and I'm basically trying to put it
> together
> > without having or making a milled out case. I took the first steps in
> > building it yesterday. I cut some aluminum pieces 0.25 inch thick X 1.25
> > inch wide X 3.5 inches long. Next step is to make some square holes in
> the
> > aluminum pieces to hold the WR-34 waveguide pieces that act as a
> high-pass
> > filter for the 22 GHz LO. Pyrojoe KI4NPV pointed out to me that the 3/16
> X
> > 3/8 inch rectangular hobby brass most of the hardware stores carry around
> > here is an acceptable waveguide replacement for WR-34, having almost the
> > same inside dimensions.
> >
> > Once I get it built I just have to figure out how to tune it up. I'm
> hoping
> > that by making two systems I can use one to tune up the other. Plus I'll
> > either have a loaner station or can use two separate transverters to be
> > used with two separate dishes, one for transmit and one for receive.
> Don't
> > know which way I'm going to go on that yet ...
> >
> > 73, Zack W9SZ
> > ______________________________________________________________
> > MAMS mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/mams
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:MAMS at mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> >
> ______________________________________________________________
> MAMS mailing list
> Home: http://mailman.qth.net/mailman/listinfo/mams
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:MAMS at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>