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Topics - gil

Pages: 1 [2] 3 4 ... 25
Antennas / Revisiting the EA3GCY MEF-1 EFHW Tuner.
« on: 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!
« on: 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


Antennas / Extend Handheld Radio Range With a Yagi-Uda Antenna.
« on: March 05, 2018, 01:02:32 PM »


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!
« on: February 22, 2018, 06:02:45 PM »


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


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


General Discussion / Major Sheldon’s Last Watt.
« on: 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.


Technical Corner / The Resurrection of the Small Wonder Labs SW+ Radio.
« on: January 22, 2018, 04:47:18 AM »


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


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


Military Radios / Pedestrian Mobile Radio With The PRC-320.
« on: November 27, 2017, 01:57:09 PM »




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?


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