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Topics - gil

Pages: [1] 2 3 ... 23
2
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.

3
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.

4
Antennas / The Marvelous 10/20/40 Half-Wave End-Fed Antenna.
« on: October 30, 2017, 02:30:52 PM »

Gil.

5
Antennas / Th Fabulous Moxon Antenna.
« on: October 23, 2017, 04:33:03 PM »

I really wanted to make one video, but had nothing for this week so there will be a part 2.

Gil.

6
Antennas / New Elecraft AX1 Antenna.
« on: October 20, 2017, 11:56:08 AM »
Hello gang.

I received a PDf from Wayne about the new Elecraft AX1 antenna, a dual-band 17/20m telescopic antenna. The whip collapses to 6". A tuner is required. It seems this antenna is mainly for HT type operations but also works for tabletop operating. I would put it in competition with the MFJ-1820T.



The PDF file is attached... No precise release date or price available at this time... I hope to get one for testing...

Gil.

7
Technical Corner / New Steve Weber Project.
« on: October 17, 2017, 05:38:10 AM »
From the AT_Sprint Yahoo group:

Quote
I just ordered proto boards for a SSB reversion of the Soda Pop, tentatively named "slop bucket".

It's based on the Survivor SSB rig design, but with a Si5351 VFO and of course, mostly SMT parts. It is slightly bigger then the soda pop board, but not by much.(92 x 100 mm). It includes a VOX circuit so it can be connected directly to a sound card for digital mode operation.  I decided not to board mount the jacks this time for two reasons. 1) to keep the board smaller then 100 x 100 mm and 2) it allows more flexibility of enclosure choices. 

My plan is to initially offer just 50 kits, all of the same band and only to US address. I know this will disappoint a lot of people, but it makes my life easier.  ETA is before Christmas.

The main reason for offering just one band is because the IF frequency is different depending on the band to keep unwanted mixer products well away from the operating frequency.

A 20 M version will use a 9 MHz IF and a 40M version will use a 11.059 MHz IF. The 20M version will likely require a more expensive PA then the 40M version to get decent power output and that could impact the price of the kit, but probably not by too much. The price will be in the ball park of the Soda Pop kit.

Gil.

9
VHF and Above / England on 2m SSB.
« on: October 02, 2017, 02:44:27 PM »

Gil.

10
Morse Code / Morse Code en Provence.
« on: September 26, 2017, 04:24:23 AM »

Gil.

11
Net Activity / Radio Vacation and Update.
« on: September 12, 2017, 03:22:54 PM »
Hello  :)

This might have been better in General News but I do hope some of you guys will be able to contact me next week on the air! This week I am working near Paris for a famous car manufacturer which will remain nameless, so no radio for me. I'm writing Python code all week. Friday however I am leaving for the South of France, Provence, North of Marseilles, to catch a few days of sun before the winter. I think I will take my KX2 along with my 6m fishing pole and 9:1 UNUN.

BTW, I had to post a "backup" video on the YouTube channel, and schedule another one for this Monday. These videos aren't my best so I was keeping them at hand for such cases. I also haven't been feeling great lately and used my spare time to rest. Though, I did manage to get back to flying on Sunday and took my girlfriend up in a "Moto du Ciel" ultralight, equivalent to a U.S. LSA light plane... Hopefully this vacation will do me some good, or it's back to the doctor's.

Your best bet at a contact is to check the RBN for my call:

http://www.reversebeacon.net/dxsd1/dxsd1.php?f=0&c=F4WBY&t=dx

There won't be anything there of course before Saturday the 16th.

I might try some SSB too, but good luck finding me :o

Gil.

12
Morse Code / Elecraft K1 Discontinued!
« on: August 31, 2017, 03:52:17 AM »
Sad sad day today as Elecraft removed the K1 from its products line.
I wish they would make a surface-mount version...

 Gil.

13
General Discussion / Crowd Funding The Perfect Survival Radio?
« on: August 22, 2017, 01:51:20 PM »
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.

14

Gil.

15
Technical Corner / New QRP Labs 5W CW Transceiver Kit.
« on: August 21, 2017, 07:13:54 AM »
http://qrp-labs.com/qcx.html

Impressive list of features! I have one on order for 80m.



  • Easy to build, single-board design, 10 x 8cm, all controls are board-mounted
  • Professional quality double-sided, through-hole plated, silk-screen printed PCB
  • Choice of single band, 80, 60, 40, 30, 20 or 17m
  • Approximately 3-5W CW output (depending on supply voltage)
  • 7-16V recommended supply voltage
  • Class E power amplifier, transistors run cool… even with no heatsinks
  • 7-element Low Pass Filter ensures regulatory compliance
  • CW envelope shaping to remove key clicks
  • High performance receiver with at least 50dB of unwanted sideband cancellation
  • 200Hz CW filter with no ringing
  • Si5351A Synthesized VFO with rotary encoder tuning
  • 16 x 2 blue backlight LCD screen
  • Iambic keyer or straight key option included in the firmware
  • Simple Digital Signal Processing assisted CW decoder, displayed real-time on-screen
  • On-screen S-meter
  • Full or semi QSK operation using fast solid-state transmit/receive switching
  • Frequency presets, VFO A/B Split operation, RIT, configurable CW Offset
  • Configurable sidetone frequency and volume
  • Connectors: Power, 3.5mm keyer jack, 3.5mm stereo earphone jack, BNC RF output
  • Onboard microswitch can be used as a simple straight Morse key
  • Built-in test signal generator and alignment tools to complete simple set-up adjustments
  • Built-in test equipment: voltmeter, RF power meter, frequency counter, signal generator
  • Beacon mode, supporting automatic CW or WSPR operation
  • GPS interface for reference frequency calibration and time-keeping (for WSPR beacon)

Better hurry on this one guys, there is a limited number available...

Gil.

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