OBJECTIVE: For amateurs around the world(DX) to contact JA stations in
as many JA prefectures + JD1 islands as possible.
For amateurs in Japan to contact DX stations in as many DXCC entities
and CQ Zones as possible.
In light of the invasion of Ukraine by Russia and Belarus, we will not
accept entries in JIDX CW contest by Russian and Belarusian.
Logs submitted by these stations will be accepted only as check logs.
** No paper logs will be accepted from 2023-CW in April.
2022-02: M2 (Multi Operator 2TX) category was added from 2022-CW.
2016-02: Awards for USA, 10 districts to each CQ Zones(03,04 & 05).
Awards for UA9(Asian Russia); One to 3 CQ Zones(16/17, 18 & 19).
Open log; all the logs will be opened after the log deadline.
1. CONTEST PERIOD
CW Start Sat. 0700 -Sun. 1300UTC 2nd full weekend of April
PH Start Sat. 0700 -Sun. 1300UTC 2nd full weekend of November
PH 2022-11-12 0700 - 2022-11-13 1300 UTC
CW 2023-04-08 0700 - 2023-04-09 1300 UTC
** The band allocation for 1.8/3.5MHz were expanded as follows;
1800-1875 & 1907.5-1912.5KHz
CW 1.8/3.5/7/14/21/28MHz (Recommend 1800-1830KHz)
PH 1.8/3.5/7/14/21/28MHz (Recommend 1845-1875, 3535-3580/3599-3612/3662-3687/
Except for the WARC bands.
3. ENTRY CLASSIFICATIONS:
**** CHOOSE ONLY ONE! ****
3-1.Single Operator(*1) High Power(*2)
Abbreviation = category
AB = SINGLE-OP ALL-BAND HIGH-POWER
28 = SINGLE-OP 28MHz SINGLE-BAND HIGH-POWER
21 = SINGLE-OP 21MHz SINGLE-BAND HIGH-POWER
14 = SINGLE-OP 14MHz SINGLE-BAND HIGH-POWER
7 = SINGLE-OP 7MHz SINGLE-BAND HIGH-POWER
3.5 = SINGLE-OP 3.5MHz SINGLE-BAND HIGH-POWER
1.8 = SINGLE-OP 1.8MHz SINGLE-BAND HIGH-POWER
3-2.Single Operator Low Power(*3)
ABL = SINGLE-OP ALL-BAND LOW-POWER
28L = SINGLE-OP 28MHz SINGLE-BAND LOW-POWER
21L = SINGLE-OP 21MHz SINGLE-BAND LOW-POWER
14L = SINGLE-OP 14MHz SINGLE-BAND LOW-POWER
7L = SINGLE-OP 7MHz SINGLE-BAND LOW-POWER
3.5L = SINGLE-OP 3.5MHz SINGLE-BAND LOW-POWER
1.8L = SINGLE-OP 1.8MHz SINGLE-BAND LOW-POWER
3-3.Multi Operator (*4)
MOP1 = MULTI-OP SINGLE-TX ALL-BAND
MOP2 = MULTI-OP TWO-TX ALL-BAND
MM = MARITIME-MOBILE
# We do not have a QRP category, it is included in Low-Power category.
So do not use "/QRP" in your callsign.
# All categories, except Multi Op, only one transmitted signal is
allowed at any one time.
# All stations can use the spotting network(like DXsummit).
# No SELF-SPOTTING of any form is allowed in all categories.
Self-spotting is defined as generating spots for your contest
callsign by yourself.
# All stations, except Maritime Mobile, must not change the operating
location in entire contest period.
# Anyone may only submit one entry in spite of the callsign used.
Submission of check logs for operation on other bands or other
callsigns are encouraged.
Any operators at MULTI-OP category can NOT enter the contest with
your own callsign.
# JA stations must sign their call area as "/#" if they operate from
different call area against their callsign.
*1 Single operator must do all contest related things by himself.
+Single-Operator can change bands at any time.
+Multiple Single-Operator entries from the same location must use
*2 High Power: Output power 100w over
*3 Low Power: Output power 100w or less (including QRP)
*4 MOP1: (Multi-Operator-SingleTX) RUNNING station must remain the same
band at least 10 minutes when they make the contact on that band.
MULTIPLIER station can transmit one other band simultaneously only
when the station worked is a new multiplier.
The above 10 minutes rule will be applied to each RUNNING station and
MULTIPLIER station separately.
The log must indicate which station (RUNNING or MULTI station) made
MOP2: (Multi-Operator-TwoTX) A maximum of two transmitted signals on two
different bands may be used at any time (Two Running stations). Each
station/signal may make a maximum of 8 band changes in any clock hour
(00 through 59 minutes).
The log must indicate which station (station 1 or 2) made each QSO.
All transmitters of the station must be located in a circle
of 500m diameter.
*5 All Maritime Mobile stations must sign "/MM" after the callsign.
They will send CQ-Zone number for exchange with JA stations only.
Please send the same CQ-Zone number during the contest.
Their scores will be listed in the result but not eligible for the
4. CONTEST EXCHANGE:
JAs : RS(T) + Prefecture number(01 to 50)
Others: RS(T) + CQ Zone number
You can download the Prefecture number= jidxmult.lst
Only contacts between JA and DX(+/MM) are worth contest points.
(DX-DX, DX-/MM or JA-JA contacts are no point and no multi)
3.5/3.8MHz ............ 2 points
7MHz, 14MHz and 21MHz.. 1 point
28MHz.................. 2 Points
The same station may be worked only once per band.
No cross mode, cross band nor repeater contacts are allowed.
JAs :The number of different DXCC entity (except JD1) and CQ
Zone worked on each band.
QSO with /MM stations is worth for Point and Zone multi but
no Entity multi.
Others:The number of different Japanese Prefecture plus Ogasawara
Is.(JD1), Minami-Torishima Is.(JD1) and Okino-Torishima Is.
worked on each band. Maximum of 50 (See the jidxmult.lst) per band.
The final score is the result of the
(Total QSO points) multiplied by (Total multiplier).
Ex. 100 QSO points x 59 multi = 5,900
8. LOG INSTRUCTIONS:
** Only one log is accepted for the result regardless of the callsign used.
** We strongly recommend you to submit the CABRILLO LOG format **
1. ASCII/Plain Text characters must be used.
2. All sent and received exchanges are to be logged.
**DO NOT FORGET TO RECORD YOUR ZONE/PREFECTURE ON EITHER LOG or SUMMARY**
5. Electronic Log:
Please follow the ELECTRONIC LOG instructions. You can send your log
EMAIL LOG: send the Log file as email attatchement.
The instruction [jidxelog-e.html] is here.
send your email logs to
---- the following instructions are for Paper logs ---
3. Indicate the new multiplier only the FIRST TIME it is worked
on each band.
4. Duplicate contacts on same band must be clearly shown and
marked as 0 QSO point.
8-6. Use a separate sheet for each band.
Use a separate sheet for Multi Op, RUNNING and MULTI station.
8-7. Each entry must be accompanied by a summary sheet showing all scoring
information, class of entries, name and address in BLOCK LETTERS, and a
signed declaration that "All contest rules and regulations for amateur
radio in the entity of operation have been observed. JIDX Contest committee
decision is final"
8-8. All entrants, except Electronic Log submittion, are required to submit
dupe-check sheets (an alphabetical list of calls worked) for each band if
200 or more QSOs were made on that band, or for all bands if a total of 500
or more QSOs were made.
Plaques will be awarded to the winners which have donnors.
[ The plaque program will be listed here in a month or so]
The Single Op/Sigle band plaques will be awarded to the highest
scorer regardless of the High/Low power category.
++ If you wish to be the Plaque Donor, please contact
Tack, JE1CKA (je1cka ## gmail.com). You can pay
the charge by PayPal. (Please change ## to @ for email)
First(plus 2nd & 3rd, depending on number of entries) place
certificate(s) will be awarded in each class in every entity,
in each CQ Zones in the USA(03, 04 & 05) and 3 CQ Zones in Asiatic
Russia UA9(16/17, 18 & 19) if the station got =SUFFICIENT= score.
*What is sufficient? Depending on the band conditions, activities
etc, judged by the committee.
The certificate will be prepared by PDF file. You can download the
file for print. (revised at 2018-02)
Web Log Submission
You can Upload your log file to the following URL;
Web Log Submission
CW : email@example.com
(Above addresses are Log submissions only)
The Receipt notification will be sent in a few minutes
when the email log is accepted.
Email Log Submission Guide is available here.
CABRILLO FORMAT is recommeneded.
JIDX "PHONE/CW" Contest
P.O.Box 22, Mitaka,
Tokyo 181-8799, Japan
No later than ONE month after the end of contest.
Email log submissions will be judged with the time stamp of the email
The deadline will be extended up to 2 weeks if the JIDX contest committee
accept the request with the reason by email prior to the deadline.
Violation of the contest rules.
False statement in the report.
The decision of the JIDX contest committee is final.
13.Information on the Internet
You'll be able to get JIDX related informations at the
JIDX Official HomePage.
JIDX contest committee chairman
Tack Kumagai JE1CKA/KH0AM