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Messages - Jon_Garfio

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1
Technical Corner / Re: Modding MTR4b for 13.8 volts..... possible ?
« on: May 22, 2018, 05:12:02 AM »
You need a voltage regulator or a step down.

Example:

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F162867196965

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2
Antennas / Re: Magnetic loop antenna.
« on: April 25, 2018, 02:08:01 AM »
I made this two months ago.
It is amazing how works into the floor.
The problem is found a good variable Air capacitor at low price.

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3
Antennas / Re: Ultralight dipole for 10 mhz
« on: April 12, 2018, 10:49:30 AM »
Here you are a dipole that I just made to bring It to mountain into the backpack.

I try to get performance with ligher weight.

The video is in spanish lenguage but if somebody needs any info I don't have any problem to share It.

https://youtu.be/c5g7npwVeXo

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Do you have YouTube automatic subtitles turned on for language conversion? Assuming YouTube does that?


Sent from my iPhone using Tapatalk
YT allows subtitles in the same lenguaje of the video.

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4
Antennas / Re: Ultralight dipole for 10 mhz
« on: April 11, 2018, 04:20:08 PM »
Very nice. I did buy a spool of that yellow wire from SotaBeams, very light indeed. I wish they put a BNC connector on that PCB. SotaBeams has some cool stuff, like QRPGuys, very light for SOTA. I understood quite a bit of the Spanish; lots of words similar to French!

Gil.
Tnx Gil. Perhaps if I speak in catalán lenguage you are going to understand better.

Yes, QRPGUYS and Sotabeams make good and cheap gear for mountain radio.

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5
Antennas / Ultralight dipole for 10 mhz
« on: April 11, 2018, 03:50:49 PM »
Here you are a dipole that I just made to bring It to mountain into the backpack.

I try to get performance with ligher weight.

The video is in spanish lenguage but if somebody needs any info I don't have any problem to share It.

https://youtu.be/c5g7npwVeXo

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6
Decathlon has fishing rods called "traveler" more compact than others. There is in 3,4,5 and 6m. 14,99€.

The last piece os too much thin, I retired It.

Spiderbeam HD 12m is a fabulous Rod for portable, not for hiking.

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7
Antennas / Re: Chameleon SPIKE mount.
« on: March 18, 2018, 06:33:06 PM »
50$ for a stainless stick with a screw thread is quite cheeky

Via TapaTalk
Amen

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8
Antennas / Re: Revisiting the EA3GCY MEF-1 EFHW Tuner.
« on: March 10, 2018, 02:22:07 PM »
Hello Jon,

Did you try it with different lengths of coax or a counterpoise? What was your wire length?
I haven't ordered yet, out of money, but it's next on my list...

Gil.
For 30m I use a radiator length of 14.23m and a counterpoise 4.74m.

Almost I used the recomended for Javier Solans from EA3GKY kits and the same.

The coaxial is a lead of RG-174, tested and working fine.

This week I made a picobalun from Sotabeams todo make a ultralight 30m dipole (winner Horse).

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9
Antennas / Re: Revisiting the EA3GCY MEF-1 EFHW Tuner.
« on: March 10, 2018, 02:11:20 AM »
I used the Ilertenna for 40m and 20m with good results.

 However for 30m the Ilertenna doesn't work fine and I use the Mountain tuner of Sotabeams.

I am waiting for. Shark 100 analizer from China...



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10
I have a 817 and during a two months a 897.

Both have the same menus and submenús etc.

I prefer the polivalence of 817.

Anyway, 817,857&897 are riggs designed 14 years ago. Today, 2018, I prefer SDRs like MCHF (or RS-918 chinnese clone) or Elecraft kx2/kx3.

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11
New To Radio / Re: Baofeng
« on: March 01, 2018, 06:53:13 AM »
I have UV5RA and UV3R+, both work Great.

Only the uv5r has a issue, It works with a negative gain antenna, and if you fit a better antenna the receiver saturate It and no Rx.

There is a post about it in a Spanish's has forum. The receiver was built to work with negative gain antennas.

However the new UV3R+ has not this problema, It works very fine with Retevis, Nagoyas and also log periodic antenna.

Note, the uv5r has as a option a USB cable to Charge throught solar pannel, the uv3r+ comes his cradle  with USB.

Anyway, 25€ for this kind of rigs id a crazy dream.



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12
Antennas / Re: Nagoya NA-771 antenna for Baofeng HT
« on: February 28, 2018, 11:13:52 AM »
I bought this Retevis antenna past month,  It runs really well.

Mira esto en eBay http://www.ebay.com.au/itm/302563853704

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13
Times are changing, Mbitx, mchf clon RS-918 (350€), etc.

I hope oriental market soon developes a SDR 100 whatts low cost.





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14
Morse Code / Activation "Vértice Geodésico"
« on: February 19, 2018, 12:12:11 PM »
Here you are my last activation past saturday. I enjoyed so much.

You can see in from of the summit Montserrat mountains, near Barcelona.

https://youtu.be/sqOY8bjD1qs

Tnx for watching.



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15
VHF and Above / Re: New Toy - TYT MD-380
« on: February 19, 2018, 10:42:12 AM »
Congrats for the rig.

If there isn't repeaters  near your home, you can built a Hot spot based in a Raspberry Pi.



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