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Recent Posts

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21
General Discussion / Re: Field Radio/SOTA Training Day
« Last post by Lumbertnut on January 08, 2018, 04:48:14 AM »
I want to go to training, what do I need to do to attend training?

22
General Discussion / Re: Crowd Funding The Perfect Survival Radio?
« Last post by Andywragg on January 08, 2018, 03:32:00 AM »
Thanks Bob.
Just out of interest, how much does it cost to print a box?
23
General Discussion / Re: Crowd Funding The Perfect Survival Radio?
« Last post by cockpitbob on January 07, 2018, 03:15:30 PM »
For what it's worth, there are two 3D printable cases for the uBITX on thingiverse
https://www.thingiverse.com/thing:2745287
https://www.thingiverse.com/thing:2732866

I've made a couple cases for RF stuff on my 3D printer.  For shielding I line it with copper tape.  This makes for a very light enclosure.  12feet of 1" copper tape is only $3 on banggood.com.
24
Radio Reviews, Questions and Comments. / Re: Hambuilder review? Anybody?
« Last post by cockpitbob on January 07, 2018, 02:58:39 PM »
That looks great for the price!  This really is the glory days of Ham Radio!

Give some thought to the uBITX.  It's an all HF band, 10W radio, except no box.  For $109 you get a fully tested set of boards you wire up in whatever box you want.
http://www.hfsignals.com/index.php/ubitx/.
If you know someone with a 3D printer, there's already 2 enclosure designs posted on thingiverse.com
https://www.thingiverse.com/thing:2732866
https://www.thingiverse.com/thing:2745287

If you're a builder like me, starting about a year ago I began feeling like a kid in a candy store with too much to choose from ;D
25
Morse Code / Re: cw on 2 meters
« Last post by Quietguy on January 06, 2018, 11:13:49 PM »
I have been having good luck doing 2 meter digital and CW through my comet vertical, to my friend about 25 miles away over rough terrain using a J-pole 25' up, here in Idaho.
[snip]
 Maybe we are just lucky?
No, you are both using vertical antennas so you don't see the mismatch.  The problem comes about when the antennas at each end are different - when one is horizontal and one is vertical.  That problem isn't present when both antennas have the same orientation. 

Historically, horizontally polarized antennas were preferred over vertical because they are quieter - most noise tends to be vertically polarized.  That's why weak signal operators tend to use horizontal polarization.  But when repeaters became common and vertical antennas were installed on vehicles, vertical became the polarization of choice for VHF/UHF FM.  Vertical antennas are much more convenient than horizontal to mount on a vehicle.  But that choice didn't carry over to weak signal work, so while you and your buddy are fine talking to each other you both will see significant losses if you try to contact weak signal stations with the more traditional horizontal polarization.

Wally
26
Morse Code / Re: cw on 2 meters
« Last post by lewisp on January 06, 2018, 07:59:08 PM »
Just saw this thread.
 I have been having good luck doing 2 meter digital and CW through my comet vertical, to my friend about 25 miles away over rough terrain using a J-pole 25' up, here in Idaho. He's impossible to get with FM simplex, but SSB seems to just laser through no problem. Even sending forms and such through FLDIGI using MFSK/FLAMP works surprisingly well. Maybe we are just lucky?
27
General Discussion / Re: Crowd Funding The Perfect Survival Radio?
« Last post by scarr on January 06, 2018, 07:36:06 PM »
That's great Andy! I have ordered one too. Over time I'm hoping to be able to put a tuner, NESCAF filter and battery in the case, so the only wires outside will be for the key, headphones and antenna

I've got an aluminium tin that came with a present, which I'm going to use as the test enclosure. If everything works and goes well with that, I'll look at getting something a bit more solid afterwards.

The tin is gold coloured, so it's going to look eh.... interesting...  even without my dodgy slicing and dicing for the display etc  ;D


28
General Discussion / Re: Crowd Funding The Perfect Survival Radio?
« Last post by Andywragg on January 06, 2018, 05:21:28 PM »
I just ordered the uBITX. It's on backorder so it will be a while before it arrives.

As for a case/enclosure.........

So of the builders  are using a cheap plastic case off Banggood for less than 10. I might get one of these and wrap it in Gorilla tape, after running silicon sealant over all the long joints.
29
General Discussion / Re: Bitcoins, Hosting, Voluntary Subscriptions and Donations.
« Last post by gil on January 03, 2018, 06:29:43 AM »
Quote
Well, despite my complete lack of literacy in the French language

It's still in French!? Darn, I thought I fixed that. There should be a way to change the language...

Thanks!

Gil.
30
General Discussion / Re: Crowd Funding The Perfect Survival Radio?
« Last post by gil on January 03, 2018, 06:28:09 AM »
The uBitx would indeed be a good candidate for boxing up in a military grade case.

Quote
Ideally I'd love stackable components what would click on to the case e.g. ATU/Battery/amp/empty cases to roll your own add ons.

Definitely. My PRC-320 works that way. You clip the battery on. Also the PRC-351, with a bolt-on tuner and the same battery.

Writing Farhan is a good idea, I will do that.

Gil.
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