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21
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
22
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?
23
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


24
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.
25
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.
26
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.
27
General Discussion / Re: Bitcoins, Hosting, Voluntary Subscriptions and Donations.
« Last post by rah on January 03, 2018, 12:46:28 AM »
Well, despite my complete lack of literacy in the French language I managed to muddle through the process and I now have a one year subscription. Once I figured out where the pay with PayPal button was - actually I sort of accidentally stumbled onto it - it was back to English which I at least have a passing knowledge of.  :o  The core group of us regulars will no doubt make the effort to figure it out but it might just put some people off and they decide it's not worth the trouble. Although honestly it will probably only be us regulars subscribing anyway. Just my two cents worth.
[/q
it looks like, from the French format, that regular credit card subscription is allowed.  As I have no Pay Pal account, will it work to enter just my card information?
28
General Discussion / Re: Crowd Funding The Perfect Survival Radio?
« Last post by scarr on January 02, 2018, 05:15:48 PM »
Farhan is an RF wizard - he'll design and build the magic circuitry, but it's probably for another enterprising soul to make rugged aftermarket cases - there are nice desktop cases made for other members of the BitX range: https://amateurradiokits.in/store/metal-enclosures/

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.

As others here have found out - loose wires are a pain in the butt and prone to failure in the field/backyard.
29
General Discussion / Re: Crowd Funding The Perfect Survival Radio?
« Last post by Andywragg on January 02, 2018, 07:01:53 AM »
How about approaching Farhan (of BITX40 and UBITX fame) with regard to 'hardening' the UBITX for the/our intended use? As far as I can tell, the UBITX fulfils most of the radio specific goals, with the exceptions being the enclosure and battery.

For me having an internal battery is a negative attribute, as typically I'd want a number of battery packs that are easily swappable. No point having a radio you can't use cos the battery is flat (in the field away from charge facility or in the middle of the night when there's no sun to solar charge).
I speak from experience here as a former military signaller, experienced in pretty much all the PRC 3** Clansman range. Whilst these are bombproof radio's I wouldn't want to lug one (HF Variety) around as a civvy due to the weight of the pack and the cells.

When funds allow I shall be getting hold of a UBITX and looking to source a suitable field style case in which to install the guts of the radio.
30
General Discussion / Re: Crowd Funding The Perfect Survival Radio?
« Last post by gil on January 02, 2018, 06:36:42 AM »
I don't dislike the 817 mind you... I might yet buy one, if only for the 2m and 70cm bands in SSB.

Gil.
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