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Re: Some thoughts on cases for exterior loop antenna amplifiers
Simon, very useful info. What size is your "tiny hole" ? Michael 2E0IHW - near the Atlantic...
By Michael.2E0IHW · #20017 ·
Re: Some thoughts on cases for exterior loop antenna amplifiers
Well a tiny hole is certainly the least expensive and if he's switched from Hylec vents to tiny holes, perhaps I need to rethink my options. I will say the CCW dual polarity H/V active antenna with
By wn4isx <wn4isx@...> · #20016 ·
Re: Some thoughts on cases for exterior loop antenna amplifiers
For what it's worth, here is Chris Molding's post in CCW group about box venting: /g/CrossCountryWireless/message/9179 I've got CCW Experimenter's amp in February this year and it
By rfsam · #20015 ·
Re: Good Morning from Rural VA
Hi Guy, Of that would be of any help here is a list of parts I used: PVC IP67 box: https://www.amazon.com/dp/B09NTWZTDD (different sizes available) Cable glands:
By rfsam · #20014 ·
Marconi XG189 Goniometer
I wonder if anyone here has had any experience of the XG189? I recently bought one and it seems to work in a lashed up table top experiment using a sig gen and a dual channel scope.. I am particularly
By Pete_G4GJL · #20013 ·
Re: Schematic & PCB design software
Altium was recently acquired by Renesas Electronics. https://www.renesas.com/us/en/about/press-room/renesas-completes-acquisition-altium 73, Scott AK5SD
By Scott Dupuie · #20012 ·
Re: Some thoughts on cases for exterior loop antenna amplifiers
The only sintered filters I ever saw were the ones on the small compressors that drove the air bearing heads on an Ampex Quad machine. https://en.wikipedia.org/wiki/Quadruplex_videotape The heads
By wn4isx <wn4isx@...> · #20011 ·
Re: Some thoughts on cases for exterior loop antenna amplifiers
I've seen some that also have a filter material within them, some multiple layers, screen, sintered material, a fibrous material, what looks like blotter paper, I think some are designed for oil, or
By Facility 406 · #20010 ·
Re: Some thoughts on cases for exterior loop antenna amplifiers
Ah the joys of dyslexia and fatigue, I mean 2003. I had to write the final notes in our FCC log, "Satellite dish moved to lowest elevation, power has been removed and the system should be considered
By wn4isx <wn4isx@...> · #20009 ·
Re: Some thoughts on cases for exterior loop antenna amplifiers
I'd be a bit concerned over the size of the "holes" in the sintered brass, they might be large enough to allow water ingress. I've spent the day searching for how the big boys protect their exterior
By wn4isx <wn4isx@...> · #20008 ·
Re: Some thoughts on cases for exterior loop antenna amplifiers
I've seen the stick on, now I know what those are! In recent projects, I've been using brass, or stainless steel "breather" vents. Here is an
By Facility 406 · #20007 ·
Re: Schematic & PCB design software
Hi Henry, Unfortunately, I suspect Altium may fall into that category at some point, it's just too tempting a prospect to avoid acquisition by a competitor. Autodesk being one I can immediately think
By Martin - Southwest UK · #20006 ·
Re: Some thoughts on cases for exterior loop antenna amplifiers
My CCW dual polarity H/V antenna, https://www.crosscountrywireless.net/dual_pol_active_antenna.htm has never had condensation. Chris used a Hammond RP1060 with a Hylec vent and wire glands of
By wn4isx <wn4isx@...> · #20005 ·
Re: Schematic & PCB design software
A modern PCB design Software can handle metric als well as medieval imperial measures in parallel. :-) The challenge is more with the user, not for the Software. Footprints and pitch of most
By Fred M · #20004 ·
Re: Schematic & PCB design software
If Sprint is too simplistic then in my view? use Altium? if you want to invest in a future proof solution. Even if you can find a old version of Protel 98SE? it can do just about everything and all
By tardivat@... · #20003 ·
Re: Some thoughts on cases for exterior loop antenna amplifiers
Whith a simple hole, sometimes small insects get in and the IP-class of sealed cases is lost. Thus instead of a simple hole, i prefer protective air and moisture vents. There are two versions, cheaper
By Fred M · #20002 ·
Re: Some thoughts on cases for exterior loop antenna amplifiers
No mater how good the box is, if you don¡¯t drill vent holes in it you will get water in eventually. Everett N4CY Sent from the all new AOL app for iOS
By Everett N4CY · #20001 ·
Re: Some thoughts on cases for exterior loop antenna amplifiers
Clever idea on the GoreTex tape and good find on the Honeywell vent. FWIW, I just deployed my LZ1AQ in a sealed ABS box with one of these for a
By Dan Clementi · #20000 ·
Some thoughts on cases for exterior loop antenna amplifiers
Some thoughts on cases for exterior loop antenna amplifiers. This equally applies to any electronics in exterior service. The top of the line cases are polycarbonate, Hammond probably manufactures
By wn4isx <wn4isx@...> · #19999 ·
Re: Good Morning from Rural VA
Good read! I think your Miss Marsh could be related to my grammar school physics teacher :-) Michael 2E0IHW
By Michael.2E0IHW · #19998 ·