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Messages - gil

Pages: 1 [2] 3 4 ... 173
16
General Discussion / Have you tried the 160m band?
« on: October 31, 2017, 06:42:16 PM »
Hello. I never have... Wondering about its utility in a prepping context...

Have you tried the 160m band? What is your experience? What do you think about it?

Gil.

17
Digital Modes / Re: FT8 digital comms mode
« on: October 31, 2017, 01:04:19 PM »
There are much better modes for chat than FT8.
Those "chatless," time-dependent modes are useless for prepping.
FSQ or Olivia come to mind, much better. I should be testing them soon.

Gil.

18
CB / Re: Palomar Digicom 100 SSB transceiver
« on: October 31, 2017, 05:05:45 AM »
Photos or it doesn't exist!  ;D

Gil.

19
General Discussion / New Shirt & Mug.
« on: October 31, 2017, 05:04:38 AM »
By popular demand:

https://teespring.com/stores/radio-preppers


Get a few!

Gil.

20
General Discussion / Re: Crowd Funding The Perfect Survival Radio?
« on: October 31, 2017, 03:44:18 AM »
Hello,

You know I've been thinking about the perfect survival radio for a while, first proposing a CW-only transceiver. Only fools never change their mind, so here is what I have come up with now:
  • Quad band, 20, 30, 40, 80m transceiver.
  • CW and DSB modes.
  • Keyer optional but real CW with full QSK.
  • 3kHz and 400Hz filters.
  • General coverage receiver.
  • 10W output.
  • Low current draw on receive.
  • Watertight case and connectors.
  • Battery in the case.
  • Built-in battery charger (3x 18650?).
  • Military handset or speaker-mic.
  • SWR indicator.
  • High SWR protection.

The choice of DSB is dictated by the need to interoperate with military radios which use USB only. I am thinking of a minimalist concept, less is better.

I wonder if a radio designer could be hired after a crowd funding campaign... What are your thoughts on this?

Gil.


i think its a great idea. but would the ability to atleast monitor the air bands or marine bands be important? offering an ability to know if someone who may not be on hf could be close enough to see a visual signal or close enough to keep your eyes open to avoid being found if thats is needed.
Yes, that's what a "General coverage receiver" does. Air band would be difficult to do but no problem for marine HF.

Gil

Sent from my SM-G928F using Tapatalk


21
General Discussion / Re: Lost at sea 5 months without comms
« on: October 30, 2017, 05:32:14 PM »
Quote
they state to have an ssb and an amateur radio on board but lost comms by loosing their antenna...

If you have a tuner, anything made of metal and a tad long can become an antenna, but maybe they did not have the technical knowledge to rig something up, the same way they couldn't rig a sail with what they had...

Maybe it wasn't a lack of preparation after all, but a lack of education and creativity in the technical realm.

Gil.

22
Antennas / The Marvelous 10/20/40 Half-Wave End-Fed Antenna.
« on: October 30, 2017, 02:30:52 PM »

Gil.

23
General Discussion / Re: Lost at sea 5 months without comms
« on: October 30, 2017, 06:54:41 AM »
Thanks for the recommendation Steve.

Quote
There are advantages to each but people MISS the disadvantage on sat-phones,

They also might not work in heavy rain, which of course is a time when you more likely might have to call for help. For a broke sailor on a long trip they might also prove too expensive, and there is no contest between eating and paying for a sat phone...

Gil.

24
General Discussion / Re: Lost at sea 5 months without comms
« on: October 29, 2017, 04:04:47 AM »
I only saw the CNN article which didn't have any details. I think we all agree that it was a failure to prepare as far as communications go...

Gil

Sent from my SM-G928F using Tapatalk


25
General Discussion / Re: Lost at sea 5 months without comms
« on: October 28, 2017, 07:33:04 AM »
http://edition.cnn.com/2017/10/27/us/women-lost-at-sea-rescued-navy-trnd/index.html

The article says:
Quote
Then the ship lost its communications capabilities.
No details...

Losing all communications, like Steve says, means you were not prepared adequately. I also don't want to be sexist here, but given the gender inequality in our hobby, it is clear that women have no interest in radio, which is surprising given that women like to communicate more than men, but of course, there is little communication going on on the airwaves today. So I am not surprised that they would have only the minimum gear and little inclination to maintain it or have backups.

On my boat I had nine HF radios, four VHF radios and a satellite communications system (Delorme Inreach), not to mention 86W of solar power with redundant controllers. There was no way I could have ended up in the same predicament. When I go back to sea I'll have probably at least three HF radios, and the Inreach, which I still have. I would even have an HF handheld like a Mizuho to use in a life raft, or better yet, one of my PRC-320s in manpack configuration. Not only do you need HF for safety but also for human contact and morale.

Unfortunately there are countless people at sea who have no business even taking a canoe out on a river, much less sailing out of sight of land. Yet they end up there, and don't always come back... Those two were very lucky, didn't even have to eat the dog :o

Gil.

26
Technical Corner / Re: New QRP Labs 5W CW Transceiver Kit.
« on: October 26, 2017, 03:12:38 PM »
Quote
In any case a lot of people are having the 1.6 watt output problem and Hans needs to get to the bottom of it.

Darn, I hope I don't have that issue... We'll see. I wonder if Hans got the idea of using three BS-170 transistors as finals like Steve Weber does for his MTRs... Why reinvent the wheel... Steve has no trouble getting 5-6W out of those little guys though...

Gil.

27
Technical Corner / Re: New QRP Labs 5W CW Transceiver Kit.
« on: October 26, 2017, 11:43:13 AM »

It seems that my low power output is because of the output LPF caps, so now I have to find some higher voltage caps that will fit in the existing holes on the board. I'm not really happy about this, the right caps should have been included in the kit.

Hi Joel, Which caps are those?

Gil

28
Technical Corner / Re: New QRP Labs 5W CW Transceiver Kit.
« on: October 26, 2017, 07:32:29 AM »
Gil

Liked what I found,  I have ordered one from Moonraker in the UK just now, so will take a week or so to get here.
Will try it out with my FT 817. And report back here.  Thanks for the recommendation.
Also the little speakers, Veho 360 arrived and working out fine wid the MTR 5 B.  Thanks
Steve
Great. 17ft of ladder line plus 67ft of wire is all you need for a W3EDP...

Gil

Sent from my SM-G928F using Tapatalk


29
Technical Corner / Re: New QRP Labs 5W CW Transceiver Kit.
« on: October 26, 2017, 07:05:28 AM »
Hello Gil
Mine will be for 80 metrs

Need to work out a decent antenna for 80 , while I wait for the radio,
Did have a dipole, but that was not very successful.
So will try with an end fed, and use my ZM 2 atu to begin with

73 Steve
A W3EDP would work great with the ZM-2...

Gil

Sent from my SM-G928F using Tapatalk


30
Technical Corner / Re: New QRP Labs 5W CW Transceiver Kit.
« on: October 26, 2017, 04:35:48 AM »
I just ordered an AVR programmer, super cheap on Ebay:

https://www.ebay.com/itm/USBTiny-USBtinyISP-AVR-ISP-programmer-for-Arduino-bootloader-Meag2560-uno-r3/400368767664

Unfortunately, the missing C17 has to be 39nF, so Hans is sending me one..  :(

This postpones my video unfortunately, but then I will be able to add a bit on upgrading the firmware.

Gil.

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