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CZECH AMATEUR RADIO STATION
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Last update 21-7-2003. Copyright OK1RP & OK1-35506. |
My
latest QRP QSOs with MIZUHO MX-21S…
IT9, EA6, UN8, OY ( I heard P29, YB0 and also YC7 from Borneo but no QSO...) ...all with MX-21S Mizuho tcvr into the 1.7m long mobile whip with magnetic base on the cars roof connected thru transmatch, SWR meter and powered by DC-DC home made adapter from cars battery. The best 2-way
QSOs with MX-21S transceiver 1.5W output into the vertical HF6V located in
Kostice, locator JO60XJ, county ELO, Czech Republic : ZL, W5,
3B8, OX, YV, TR, PY, 3V8. Technical
news… I am working on the user
friendly DC-DC converter for MX-..S series of the MIZUHO handhelds
for all of the users they are need it for external DC power supply
operation higher than 10V. Small black box with simple function, cheap and
usable displacement for original equipment PM-1 from Mizuho. At the moment
it is under development and testing. Latest
DC-DC
converter for MX-..S series
ver. 1.2. works great and building is really cheap. I
am preparing small kit of the DC-DC converter for sale ! I
am still testing the another
beta ver. 1.2. Bandpass filter for MX-21S
cause last one had too much insertion loss. I am also working on simple option
for easily CW operation without necessity to use original CW-2S kit
from Mizuho. I
have arranged very simple kit which makes the same functions as the CW-2S
and works very nice. Now under beta tests... Latest project is mini PA
excited by Mizuho MX-..S for 100W output power when used in fixed QTH
only for $80 only ! Another
developments will be soon ! I
am able to repairing your Mizuho MX..S handhelds from now ! If
you have any troubles with Mizuho (mainly in EU) then contact HOT Line ...
New
HOT
Line:
Click here to [email protected]
for asking directly if you have any questions, requests, orders or
technical troubles.
Thanks. Petr, OK1RP |