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Topics - gil

Antennas / Revisiting the EA3GCY MEF-1 EFHW Tuner.
March 09, 2018, 02:00:28 PM

A while ago I tested the MEF-1 but had some trouble adjusting the SWR. The problem was actually due to my MR-100 antenna analyzer. I tried again and this time got a perfect SWR, from 1.1:1 on 14MHz to 2:1 on 14.35MHz. That's a lot of bandwidth. My wire is 33ft long, or 10.1m. The Reverse Beacon Network report was quite surprising with quite a few spots from the United States! Now I need one for a 30m end-fed.

Technical Corner / I finished my Weber Soda Pop!
March 06, 2018, 05:09:36 PM

I finally got it all done!

  • Added an acrylic green screen.
  • Three 18650 cells in the case.
  • Inboard balanced charger.
  • Inboard MPPT solar charge controller.
  • Balanced port and lead for external charger.
  • Mini speaker.

I destroyed two acrylic screens and one speaker before getting it all packed up :o
The plug near the speaker is the balanced charging port.
Time to get my ass outside now  ;D


The FT-818 provides 6W of solid output power with external DC power source. The supplied Ni-MH battery pack (SBR-32MH) has been upgraded to now provide larger battery capacity - 9.6v/1900mAh. The recent launch of several new satellites is a certain indicator that the large global community of satellite enthusiasts are going to be a very delighted to learn that the FT-818 includes the build in TCXO-9 oscillator that gives the FT-818 fantastic frequency stability (+/-0.5ppm). 5Mhz band (WRC-15 frequency is also available on the new FT-818.

The FT-818 includes all the useful functions that are included in the FT-817ND: Dual VFO's, Split frequency operation; IF Shift; Clarifier "R.I.T"; IF Noise Blanker; RF Gain and Squelch control; IPO (Intercept Point Opimisation); AM Aircraft reception; AM and FM Broadcast reception; VOX; Built-in electronic keyer; Adjustable CW pitch; Automatic Repeater Shift (ARS); Built in CTCSS Encoder/Decoder; 208 memory channels with 10 memory groups; two antenna connectors; automatic power off (APO) and Time out Timer (TOT) functions; and so on.

Radio Features:

- Increased power output 6W(SSB, CW, FM) 2.0W(AM Carrier) *NEW!
- Improved frequency stability ±0.5 ppm : Built-in TCXO-9 *NEW!
- Larger battery capacity : 9.6V/1,900mAh (SBR-32) *NEW!
- 5MHz band (WRC-15 + UK frequency) Operation available *NEW!
- 208 Memory Channels / 10 Memory Groups
- Operates on 160-10m , HF, 6m, 2m and 70 cm Bands
- Ultra Compact and Portable
- Two Antenna Connectors
- IF Shift, IF Noise Blanker, IPO, ATT
- CW "Semi-Break-in", CW Reverse, CW Pitch Control
- Built-in Electronic Keyer
- Multi-Color Easy to see LCD
- Internal Battery Operation Capability
- ARS Automatic Repeater Shift
- APO Automatic Power Off
- Front Panel Key Lock Mode

Supplied Accessories:

Hand Microphone(MH-31A8J)
Battery (SBR-32 9.6V 1900mAh Ni-MH )
Battery Case (FBA-28) (Requires 8 "AA: batteries)
Whip Antenna for 50/144/430 MHz (YHA-63)
DC Cable (E-DC-6)
Shoulder Strap, Ferrite Core, Rubber Foot
Operating Manual
Battery Charger (PA-48)

Frequency Ranges: RX 100 kHz - 30 MHz
50 MHz - 54 MHz
76 MHz - 108 MHz
87.5 MHz - 108 MHz
430 MHz - 440 MHz
TX 1.8 MHz - 54 MHz
(5.2500 MHz - 5.4065 MHz) WRC-15 + UK
144 MHz - 146 MHz
430 MHz - 440 MHz (Amateur Bands only)
Circuit Type: Double-Conversion Superheterodyne (SSB/CW/AM/FM)
Single-Conversion Superheterodyne (WFM)
Modulation Type: A1A(CW), A3E(AM), J3E(LSB,USB), F3E(FM), F1D(PACKET), F2D(PACKET)
RF Power Output : 6 W (SSB/CW/FM), 2 W (AM Carrier) @13.8 V
Memory Channels: 208
Case Size(W x H x D): 135 x 38 x 165 mm w/o knob and connector
Weight: 900 g (w/o Battery, Antenna and Microphone)

Sent from my SM-G928F using Tapatalk

Morse Code / Watch me on the Reverse Beacon Network!
February 22, 2018, 06:02:45 PM

Morse Code / Old Footage, QRP Camping in Florida.
February 19, 2018, 06:14:54 AM

General Discussion / Video on bands and ranges.
February 14, 2018, 02:52:39 PM

General Discussion / Major Sheldon’s Last Watt.
February 08, 2018, 06:32:39 PM
Hello. Here is a short story sent to me by Wayne (N6KR) at Elecraft. The author is W. A Taylor.
Click on the attachment below to get the PDF file.

General Discussion / Merry Christmas!
December 24, 2017, 07:14:58 AM
And happy new year to everyone!

Morse Code / First Time Using a Vibroplex Bug.
December 06, 2017, 05:14:50 AM


General Discussion / Have you tried the 160m band?
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?

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

Get a few!


Antennas / Th Fabulous Moxon Antenna.
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.

Antennas / New Elecraft AX1 Antenna.
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...

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

QuoteI 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.