Jim's review, http://k9yc.com/BandpassFilterSurvey.pdf Is pretty much the seminal work on switched bandpass filter selection. Well worth the read. Unfortunately I think the super 5B4AGN filters are n
Thought I would ask here to see if I can get some ideas for system upgrades. Disclaimer: I am involved in a project professionally though I take a lot of this into my amateur radio activities and I'm
Many thanks for all the useful thoughts on weather sealing, I learned a few things too. Martin, HS0ZED Thought I would ask here to see if I can get some ideas for system upgrades. Disclaimer: I am in
Well here's another vote for groups.io. As some have said it works just like any other email list reflector, for me that is through my Thunderbird email client which is running continuously, handles
I've been soldering coax connectors for years, mostly N type and BNC clamp type. I've probably done several thousands of both as well as PL259 and SMA, SMB types. The iron is absolutely key in all of
The only thing missing from this plan is the use of a Yaesu G400 to turn the antenna and RG58 coax to feed it. Martin, HS0ZED There is not a single thing about this installation that I like or would
That sounds like the difference between a mechanical switch and a basic relay. Martin, HS0ZED Measured a few switches I had laying around. Old B&W round switch. 70 dB @ 3.5 MHz, 60 db at 28 MHz. Not
Adding a bit here, there are some simple ways to make a good switch using relays. Use two relays so the contacts are in series. Arrange the layout for good physical separation, a central common point
This recent Orion thread, specifically the weak mast clamp got me to thinking. Does the Prosistel PST61 still have the bad seal issue?. I recall an on-line resource some time back but cannot locate i
Hi, I have most of a Wilson SY36 3 element triband yagi which has the same trap arrangement for the driven element. Martin, HS0ZED On 23/11/2019 02:15, Tom WA9WSJ via TowerTalk wrote: Thanks Steve! T
I have had an AA-230 Zoom for a couple of years, pretty much since it was first available and I rate it as excellent. The screen is not huge but it is reasonably bright. If I choose the right colour
Hi, I have a couple of large suitcase sized Pelican cases, the real thing. I am wondering how weather proof they might be? Have read suggestions they are not necessarily guaranteed to be submersible
Thanks for all the useful information. The cases I have are about 30"x20"x11" they have the breathable vent and a back plate with pull handle and wheels. The back plate is held on by 12 large Roberts
I plan to add a couple of silica gel bags inside but I cant see condensation being too much of a problem with the vent. Temp variation here is not much, across a year night time minimums vary from ab
Just be aware of the T2X rebuilders law. There are people who in the course of a T2X rebuild have had ball bearings go everywhere with the great possibiity of some never be found again. Then there ar
PSTrotator by YO3DMU does a lot of different things for a lot of rotators. It doesn't handle multiple rotators in one instance but does allow you to create multiple instances, up to 8 I think. I woul