| |
DJ7ST > QRP 29.06.04 08:30l 170 Lines 7553 Bytes #999 (0) @ EU
BID : I01BGLDB0ABZ
Read: GUEST
Subj: 5th QRP-Minimal-Art-SESSION
Path: DB0FHN<DB0FOR<DB0SIF<DB0SON<DB0ERF<DB0ABZ
Sent: 040628/2002z @:DB0ABZ.#NDS.DEU.EU [Salzgitter JO52FD] DP6.00 $:I01BGLDB0A
From: DJ7ST @ DB0ABZ.#NDS.DEU.EU (Hartmut)
To: QRP @ EU
X-Info: Upload without password authentication
From DJ7ST@DB0ABZ.#NDS.DEU.EU
QRP-CONTEST-COMMUNITY (qrpcc) 28-June-04
c/o Dr. Hartmut Weber, DJ7ST
Schlesierweg 13
D-38228 SALZGITTER
Germany
Dear qrp-minimalists,
these are the
Results of 5th QRP-MINIMAL-ART-SESSION (qrp-mas) (20-May-2004)
==============================================================
CLASS A TX+RX or TRX < 100 components
------- ------------------------------
CALL PTS COMP QSO Rig description
1 DL7FZ 153,30 A54 30 12 MHz-IF-TRX; 2-pole xtal filter, Mosfet-PA-TX
2 DL1ARH 91,76 A52 17 TRX 43 kHz IF; 3,5W (3xKP902A at 24V)
3 DL6KWN 66,70 A85 16 VFO-BU-DR-PA 4.5W ; DC-RX (RF-ampl.,select. AF)
4 OK1DZD 65,00 A99 17 HB-TRX; "100MAS" with "blooper"-Rx
5 DL1JGA 64,96 A88 16 VFO-BU-BU/TR-PA; DC-RX (RF-ampl.)
6 OZ9KC 64,64 A99 16 DC-RX; VFO-BU-PA (2N2907A); 1w
7 DL1SAN 50,17 A27 11 pixie funk with VRO, only 1 af-stage, 400mW
8 DL1HTX 44,40 A89 10 VFO-BU/DR-PA (2SC2078), 4w ; DC-RX (RF-ampl.)
9 OK1DLY 34,08 A58 6 DC-TRX, (Dual-Gate Mosfet), 3w
10 DL3AKF 8,08 A99 2 The99er (HB9XY; QRP-Report 1/2003)
CH OK1IF A69 2 DATEL-TRX (1991) (sorry, no circuit diagram)
CLASS B TX < 50 components
------- ------------------
1 DJ9IE 208,80 B13 36 CO-solo (EL 508); 250V, 5w
2 DL7VEO 150,88 B18 23 CO-PA (2SC1969)(DJ9IE "special") 2,5w
3 DK5RY 115,60 B15 17 VRO-PA (CQ-DL 9/02, p.674; DJ1ZB)
4 DK0LA 111,36 B13 20 "Mittelvolt-MAS-TX" VRO-PA (BC548-BD139) 3w/30V
5 DJ6FO 110,88 B37 22 OXO-VFO, JBS-TX, PA 2SC2166; 3W
6 DL4FO 109,34 B29 20 VXO-BU-PA (BD135), 3,5w
7 DJ1ZB 103,70 B15 17 VRO-PA (CQ-DL 9/02, p.674; DJ1ZB)
8 DK0VLP 88,00 B12 14 Piccolino npn-version (BD106)(DJ1ZB, SPRAT '85)
9 DL9GWA 84,80 B20 14 VXO-PA (trans.)
10 SP6LV 84,18 B31 16 VFO-BU-PA (ECC82-6P17M), 5w
11 DK0SZ 84,00 B44 22 TX80/1 (Hari); PA 2N2219, 900mW
12 DL9QM 82,36 B29 16 ECO-PA ( 2 tubes ), 9w in
13 DG3WB 75,60 B16 12 VXO-PA (2N2222A-VN10KLS) 1,5w
14 OK2BTT 70,40 B20 11 ECO-solo (EL83)(Amat. Radiotechn. 1954, OK1BMW)
15 DL2AWA 69,96 B34 14 VFO-DR-PA (EF80-EF14-EL12N)
16 ON4ATZ 65,80 B30 17 VFO-BU-PA (IRF520); 3w
17 DF2AP 60,80 B24 10 VFO-BU-PA (PA 2N3553) 1,5w/13V
18 DJ7ST 56,16 B22 9 VXO/TRPL-PA (EF13-EF14); 400mW
19 OE8GBK 54,12 B18 9 VXO-solo (RL12P10), 5w
20 PA3AFF 45,92 B18 7 CO-PA (2N2905A-BUZ21) (3579 kHz); 3w in
21 DL2MFP 34,80 B13 5 Hartley-solo (1 tube TM 15 , France~1920) 2,5w
22 DL8GN 32,80 B18 5 VXO/PA (VN10KM MosFet), 1.2W (ARRL "QRP POWER")
23 DL0ARN 27,84 B13 4 VFO-PA (3xKP902A); 9W in
24 DJ5KZ 19,92 B17 3 ECO-PA (EF80-E(C)L86); 500mW
- - - - - - - - -
The minimalists' voice:
----------------------
The QRN wasn't too bad this time, but the contest activity from G somehow
confusing. Only a few OM were patient enough up to the end but then were
richly rewarded by a lot of late QSOs. For the first time participated with
"splitted mind", i.e. also using the club call DK0LA (DJ1ZB/DK0LA)
I was satisfied with the RX part of my "100MAS". I wasn't disturbed by the
G-contest (OK1DZD)
My tests with an audion (trf) haven't been too encouraging. Perhaps it
would help to include the tx-xtal into the rx-selectivity. QRN has been
not too strong this time, thus weak signals had their chance, too (DJ9IE)
All parts & valves over 40 years old (SP6LV)
Extreme QRN here in southern DL smashed some QSO... (DL8GN)
Reactivated my Hartley ..though there were problems with keeping the
frequency stable.....no doubt one could hear that... (DL2MFP)
Unfortunately a very high QRN level, so participation limited (DL1ARH)
Much fun in my first MAS, but 80m-QRN was tiring out... (DF2AP)
A first class "menu" after a beautiful Ascension Day : QRM/QRN, G-QRM and
nearly no space.... making QSOs under these circumstances - that's really
something...was getting better later around midnight (DL1JGA)
Tnx for monitoring also 3579 kHz to allow my QSO's (PA3AFF)
Working conds were good, only a little QRN around 2030 UTC (OZ9KC)
Without MAS I never would have built this kind of equipment- go on that
way! It may work without sidetone, but not really without VFO! (DL1HTX)
Finally...found the time for homebrewing something for MAS...an old
Philips receiver provided valves and power supply... (DJ5KZ)
QRM from G was tremendous, unfortunately...modified my pixie radio a little
bit ... found one af-stage sufficient with an 40m long antenna... (DL1SAN)
Taking part for the first time for only two hours. QRN, a G-contest and a
small tx-tuning range made it difficult... will try a two stage TX next time
(DL4FO)
High QRN level during the first two hours...(DK5RY)
The homebrew TX would have hold out till the end - not so the OP! Fighting
until giving up because of weak signals and QRN, QRN....(DL9QM)
Agn vy QRN...cuagn in QRP-MAS 2005 (OK1DLY)
Sorry, only short-time participation (DL3AKF)
Nice contest, have a lot of fun...congratulations with your website, it's
very easy now to find the rules (ON4ATZ)
QRN, QRM by G-Contest, tired from Ascension Day's walking...(DL2AWA)
Beeing forced into a very small freqency range I had to call cq very often.
But the few QSO have been fun nevertheless... MAS has been SUPER... (OE8GBK)
- - - - - - - - - -
The manager's voice:
--------------------
Compared with previous years there is a downward QRN tendency though some
OM especially in southern DL and OK again had to suffer. It's for sure:
sooner or later we'll have a MAS absolutely free of QRN!
In northern aereas the G-QRM breaking out suddenly and violently was the much
bigger problem. A problem in future, too? Fortunately not! The QRM was caused
by the RSGB-Club-Championship which is a weekday activity (laudable in view
of decreasing activity on our amateur bands!) So the collision was more by
accident, not planned.
Those who struggled through or paused for a time were rewarded richly: there
were quite satisfying condx for milliwatting in the second half of MAS with
lots of QSO. The hours around midnight on 80m are THE minimalists' hours!!
In case of trouble a small PA in reserve could help over QRN and QRM by
making 4-5 watts out of your milliwatts. A suitable design has been published
in the June issue of CQ-DL. Willi, DK6SX presents a design with negative
feedback thus preventing instabilities and too much gain violating the QRP-
limit. (Minimalists will do it without the integrated rf-vox).
"Doyen" DJ1ZB and DL1ARH, too, acquired a taste for a "double-existence" on
the band: owning more than one rig meeting the MAS criteria and wishing to
use them both they did it by lending a club call for this event.
A pleasant change for all though reducing the chances for the individual
call. But winning is not really the main intention of MAS...
Hpe cuagn all minimalists next weekend (03/04-Jul) in the
16th O R I G I N A L - Q R P- C O N T E S T
---------------------------------------------
73/2 Hal, DJ7ST
Read previous mail | Read next mail
| |
