domenica 15 luglio 2018

Newfoudland - QRP QSO

This is not my best QSO, but with 2,5 watt (RIG is EGV40) and short dipole on a tree on 40 m, it is a QSO of 1931 kilometers per watt.



73 de IZ3AYQ

domenica 1 luglio 2018

QRP 14 MHz Transceiver of YU2TT



YU2TT, Vojijslav, sent me the schemas of his transceiver, ad i am happy to publish his work. So, every one  with some experience in electronics can  build his own transceiver ! In same ways it is inspired by the Toucan of F6BQU, but it has its own changes.



QRP 14 MHz TRANSCEIVER:



THE TX:



THE VXO:








THE "VOX" CIRCUIT:


















73 de IZ3AYQ

venerdì 29 giugno 2018

QRP QSO WITH YU2TT

Yesterday i was in QSO with YU2TT, Vojislav from Lapovo, Serbia.  Even if it is not one of the longest links, it is very interesting!

We were both in QRP; i userd a microBITX; he used a self made transceiver, a very very good job!

Here are the QSL and some images of his transceiver. There are still OM building their RIGS !!!


Some images of the self made RIG:










Many compliments to Vojislav !!! In the next post i will put some schemas.
73 de IZ3AYQ 

mercoledì 27 giugno 2018

QRP activity on 20 and 15 meters

This is my QRP soft activity on 20 and 15 meters, from the 2 of february to the 23 of june 2018: with a RTX  microBITX, and vertical dipole 6 meters from the ground; a QRP and very simple and small station !






73 de IZ3AYQ



giovedì 7 giugno 2018

Vertical L dipole for 20 meters (and 15 meters)

Here is details of a vertical dipole, L shaped and folded, for restricted space; i use it in QRP on 20 meters and on 15 meters, with microBITX.

SWR: 1:1.2 on 20m; 1:1.6 on 15 m.

73 de IZ3AYQ

sabato 2 giugno 2018

Testing QRP with microBITX

TESTING microBITX ON 20 m and 15 m

I am testing QRP CW with my microBITX: 5 watt and vertical dipole (better: L dipole):
using an old vertical antenna, cut for 20 m (5 meters sermivertical + 5 meters horizontal leg); SWR very low on 20 m (1:1.2) but also on 15 m (1:1.5).


Easy contacts with Europe, North America and Asiatic Russia, but also New Zeland in 15 m during the last contest.

Results:

- simple RTX
- very simple antenna
- interesting DX QSO in QRP!

73 de IZ3AYQ

mercoledì 28 marzo 2018

QRP GUYS

QRP Guys

In questo periodo non riesco a pubblicare posts, in quanto ho poco tempo, e quello residuo da lavoro e famiglia e scoutismo (quindi pochi minuti al giorno), lo uso per fare qualche collegamento con il mio microBITX.

Navigando in Internet, ho trovato un sito interessante, quello di QRP GUYS, che contiene progetti semplici, in kit e di basso costo, per chi non può spendere più di tanto per un hobby, ma ha altre spese prioritarie da sostenere.



All'interno del sito vi sono vari kit, tra cui interessanti:

Paraset transceiver 40 - 80

MMM 40m transceiver

End Fed Antenna Tuner for SOTA

Mi sembrano interessanti e ben spiegati, suscettibili di modifiche, con un basso tempo di implementazione, e la possibilità e l'incentivazione a fare modifiche.

73 de IZ3AYQ