Quick Login

Recent Posts

Pages: [1] 2 3 ... 10
1
Welcome to the Club / Re: Hello to all
« Last post by vu2nan on September 22, 2019, 05:26:46 UTC »
Hi OM Julio,

Welcome to the club!

Have fun, now that you are back!

73,

Nandu.
2
Mike's Tavern / Re: Is the QRP Club still alive?
« Last post by GM0LVI on August 24, 2019, 06:59:47 UTC »
Quote from: Kw4wa on August 13, 2019, 17:30:25 UTC
I posted my introduction spiel this morning, and just noticed that the most recent post in this forum before mine was back on June 20.
Did everybody moved to another forum? or is QRP moribund?

Very little being posted for the past year. I used to look in frequently and tried to keep things going with the odd post, but it's starting to look rather dead now. Rather a shame as it was a very active and intersesting group when first established.
3
Builder's Corner / A Chance Crystal Radio Project
« Last post by vu2nan on August 19, 2019, 16:26:18 UTC »
A vintage unmarked inductor/transformer had been lying neglected in my junkbox for decades and I had to resurrect it.

Resistance checks showed that 2 windings, with a tap each, are terminated in its 6 pins. One measured 70 Ω with a 5 Ω tap and the other less than 1 Ω. A threaded core, with a movement of 5 mm is situated at the top of the unit.

The 70 Ω winding appeared to be suitable for a crystal radio. It was wired up as per the schematic shown below.

More details at

https://nandustips.blogspot.com/2019/06/a-chance-crystal-radio-project.html

73,

Nandu.
4
Builder's Corner / Tarnished Silver as a Crystal Radio Detector
« Last post by vu2nan on August 19, 2019, 16:05:36 UTC »
A fully tarnished, shiny black silver artefact was tried out as a detector in place of the germanium transistor in my series-tuned, shunt-fed crystal radio.

More details at

https://nandustips.blogspot.com/2019/08/tarnished-silver-as-crystal-radio.html

73,

Nandu.
5
Builder's Corner / Carbon Microphone as a Crystal Radio Detector
« Last post by vu2nan on August 19, 2019, 16:01:59 UTC »
A vintage telephone carbon microphone, which possesses multiple contacts between carbon granules and metal, was tried out as a detector replacing the germanium transistor in my series-tuned, shunt fed crystal radio.

More details at

https://nandustips.blogspot.com/2019/08/carbon-microphone-as-crystal-radio.html

73,

Nandu.
6
Mike's Tavern / Is the QRP Club still alive?
« Last post by Kw4wa on August 13, 2019, 17:30:25 UTC »
I posted my introduction spiel this morning, and just noticed that the most recent post in this forum before mine was back on June 20.
Did everybody moved to another forum? or is QRP moribund?
7
Welcome to the Club / Hello to all
« Last post by Kw4wa on August 13, 2019, 11:43:15 UTC »
I retired last week and decided to come back to ham radio, QRP to be specific.
I found out my CW is a little rusty at 20 wpm (used to good at 25 wpm). but will catch up soon.
Using a Heathkit HW-9 and a Vibroplex Champion bug.  The  antenna is a Butternut HF-6V and it isn’t quite tune in yet.
73 to all
8
Telegraphy / Even More Homebrew Keys
« Last post by VE4AKI on July 20, 2019, 14:30:25 UTC »
Well I have been busy making more homebrew keys [ you think I have too many ! ]
The straight key has a plastic base and p.c. board for the lever.
The single lever paddle is built into the plastic enclosure from a phone charger. Thanks for looking
-------------Tom
9
QRP / contact with 3,5 watts
« Last post by f5gsk on May 17, 2019, 19:23:21 UTC »
hi all,
My Flex-1500 is dead....sniff ....qso are done with my mfj-9020 ,power out :3,5 watts and antenna L (2x8,31m) qth nr Toulon - jn23wc :

7030 08:11 localtime -15/3/2019 - G4YBU - Tim - Epson - England 
7013 21:39               - 18/3/2019 - LZ1Q1- Petkov - Sofia - Bulgaria
14040 17:25             - 20/3/2019 - LZ1WR - Tudor - Karlovo - Bulgaria
14058 17:37             -21/3/2019 - RU3KJ - Victor -Varonez - Russia
14022 11:31             -22/3/2019- GS8UL -  Radio Club - Scotland
14023 15:24             - 22/2/2019 -OY1CT - Carsten - Feroé island - Denmark
14060 21:51             - 14/5/2019 - UR3VZ - Nikolai - Listopodovo - Ukraine
14058 17:03             - 17/5/2018 - G4GZG - Larry -Torquay - England
72/73 Pierre - F5GSK
10
Welcome to the Club / Intro
« Last post by K4MHC on March 25, 2019, 13:36:44 UTC »
Hi. New here. Been a ham for about 4 years now. Rig is a Yaesu 897 dialed back to 5 watts into a random wire antenna about 60 feet up in a tree at its highest point.

I am totally CW...but still keep a mic handy if needed.
Pages: [1] 2 3 ... 10