AmateurRadio.com

The following blog was originally published four years ago and with the ever-growing number of new 630m stations, some may find the information helpful.

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Amateurs and and U.S. experimental licence holders operating on the LF and MF bands, are limited in the amount of power they are legally able to run. Unlike the HF bands, where maximum power limits are expressed in either DC power input or PEP output, LF and MF operators are required to observe ERP or EIRP limitations. Canadians operating on 2200m are limited to 1W EIRP and to 5W EIRP on 630m.

Although this doesn't sound like much, mustering this amount of effective power can be quite a task on either band, especially on 2200m. This is due to the very poor efficiencies encountered when using antennas that are so small in size compared with what would be considered 'normal'. For example, a typical 1/4 wave vertical used on 40m is about 33' high and with a good radial system can achieve efficiencies in the 80% range, while the equivalent antenna for 2200m would be 550m or about 1800' high ... a little large for most suburban backyards!


The equivalent of a normal 2m 'rubber-ducky' antenna when built for 2200m would be over 600' tall, while one designed for 630m would be around 170' high! A 2" stub used on your 2m hand-held would be the same as a 56' vertical on 630m. Consequently, most LF / MF backyard antennas will realize efficiencies of less than 1% and likely, quite a bit less.

In order to reach the maximum radiated power levels allowed usually requires several hundreds of watts, especially on 2200m, where near kilowatt levels are needed. These small radiated power levels might seem discouraging but they don't account for radio's great equalizer ... propagation. More than anything else, RF loves to radiate, and at times, what can be achieved on these bands with such low effective radiated powers is stunning

It would seem that Industry Canada did us no favors when they stipulated LF / MF power levels to be measured in EIRP and not the, much easier to calculate, DC power input level ... or perhaps they did. I think that, unlike on HF, imposing EIRP rather than DC input power limits puts everyone on an even playing field. Amateurs with lots of real estate and room for a larger, more efficient LF antenna, will be required to run much less power to reach the allowable EIRP and 'stay legal', compared to someone with a small backyard in the suburbs ... the latter can legally generate the higher level of DC input power required to reach the EIRP limits since their smaller antenna is operating at less efficiency. However, determining EIRP is not as cut and dried as measuring input power.

With some fairly sophisticated (ie. expensive) field strength measuring equipment, not typically found in amateur radio operations, ERP / EIRP can be readily determined. This means that for most amateurs,  alternate methods must be used.

Neil, WØYSE in Vancouver, Washington, who runs an experimental 630m station under the call of WG2XSV, has produced an excellent treatise on calculating your station's EIRP level, providing a step-by-step procedure to follow.

In order to determine your ERP / EIRP, you must first determine your antenna's radiation resistance. Two methods of calculating the antenna's radiation resistance for both verticals and top-loaded verticals (inverted L's or T's) are demonstrated, using the physical size of the antenna in relation to the frequency of operation. Once this value is known, the antenna current is measured while transmitting. These two values allow the Total Radiated Power (TRP) to be calculated. The TRP is then multiplied by 3 to yield the EIRP or by 1.82 for ERP. Roughly speaking, 5W EIRP is the equivalent of 3W ERP. Thanks to Neil for this helpful resource.

An alternate method of roughly determining ERP / EIRP values is an interesting new online 'antenna simulator' at the 472kHz.org site. Using known physical sizes along with your ground quality description, the calculator will indicate what total power output is required to produce various levels of ERP and EIRP as well as expected antenna currents, at 472kHz. It's a good starting point if you are either planning a new antenna system or perhaps, repurposing an HF antenna such as an 80m inverted-L or an HF center-fed dipole for use on 630m.

Neil has also sent the following comments that will be of interest to those planning a sloping-wire tophat:

Hi Steve,











There are also a number of online calculators that will indicate your ERP / EIRP value when you plug in your antenna's 'gain' figure along with your TPO value. Some of the better antenna modelling programs can produce estimates of your antenna 'gain' at 630m and from there it is a simple matter of calculating what power is needed to reach the legal level.

I'm sure there will be a lot more information and discussion about this topic once the LF and MF bands are released in the U.S.A. but in the meantime, calculating your ERP / EIRP levels is not as hard as it might initially seem ... and is likely accurate enough for most agencies overseeing amateur radio activities.

CLE 256 will be held this coming weekend and will be somewhat different than normal.






'CLE's are 'Co-ordinated Listening Events, and NDB DXers around the world focus their listening time on one small slice of the NDB spectrum ... but this one is a little different.

This event has been organized around the Maidenhead Locator system and will challenge hunters to log beacons based upon the beacon's FIELD designation. Listeners should seek to log a maximum of five NDBs in each GRID FIELD.

The grid field is actually the first two letters of the grid locator, such as 'CN', 'FN', 'DM' etc., as seen in the map above. Each field itself is divided into 100 GRID SQUARES, but individual grid squares are not relevant for this CLE ... only the fields.

Most amateurs that operate on the VHF bands are very familiar with the 'grid square locator' system and many VHF operating awards and events are focused on working different grid squares. This may all be a new adventure for many non-VHF DXers but it does present a whole new way of keeping track of your catches.

I have always kept track of the grid square locator for all NDB signals that I hear and often find that a signal being heard from one particular square will lead to other beacons being heard (often new catches) from adjacent squares, while propagation is spotlighting that region ... it often pays to keep a grid square map handy while you search the band!

If you are not familiar with the grid square system, it's all pretty simple and this CLE only focuses on the largest part of the system, the FIELD. The first thing you should do is determine your own grid FIELD location, which, for North America, can be found very easily from the map above or anywhere in the world on K7FRY's locator map.

When tuning for NDBs, put your receiver in the CW mode and listen for the NDB's CW identifier, repeated every few seconds. Listen for U.S. NDB identifiers approximately 1 kHz higher or lower than the published transmitted frequency since these beacons are modulated with a 1020 Hz tone approximately.

For example, 'AA' near Fargo, ND, transmits on 365 kHz and its upper sideband CW identifier is tuned at 366.025 kHz while its lower sideband CW ident can be tuned at 363.946 kHz. Its USB tone is actually 1025 Hz while its LSB tone is 1054 Hz.

Often, one sideband will be much stronger than the other so if you don't hear the first one, try listening on the other sideband.

Canadian NDBs normally have an USB tone only, usually very close to 400 Hz. They also have a long dash (keydown) following the CW identifier.

All NDBs heard in North America will be listed in the RNA database (updated daily) while those heard in Europe may be found in the REU database. Beacons heard outside of these regions will be found in the RWW database.


From CLE organizer Brian Keyte:

===============================================
Hello all

Here are the Final Details for this weekend's special DX Listening Event.
We'll be listening for up to 5 NDBs in as many Locator FIELDS as we can.
Fields are the first 2 letters of the 6 character locators ('Grid Square').

A World map of all the locator Fields is shown below:

(click map to expand)

You can see, for example, that Field IO includes most of the British Isles.


    Days:     Friday 22nd May – Monday 25th May

    Times:    Midday on Friday to Midday on Monday, LOCAL time at the RX

    QRG:      Normal LF/MF frequencies (190 - 1740 kHz)
    Target:     UP TO 5 NORMAL NDBs IN EACH LOCATOR FIELD (see below)
                    (not DGPS, NAVTEX, Amateur or UNIDs)

    Please also log YOUR NEAREST ACTIVE NDB - that will probably be one
    of the five in your own Field.

Please post your CLE log to the List in a plain text email if possible, with
'CLE256 FINAL' at the start of its title and showing on each log line:

    The full Date ( e.g. 2020-05-22, etc., or just the day number 22 )
    UTC  (The day changes at 00:00 UTC).
    kHz - the NDB's nominal published frequency
    The Call Ident.

As always, put those FOUR MAIN ITEMS FIRST on each log line, with any other optional details such as location and distance LATER in the same line.
There is no need to show the locator Fields (the harvester program will work out all of them and the nearest NDB you logged).

Your log will be easier to read if you group your loggings by Locator Field
and leave a blank separator line between the groups of up to 5 lines for each Field.  If you wish, you could add the 2-letter Field ident (NOTHING ELSE) at the start of each of the separator lines.

UNIDs that you come across may also be of interest - in a SEPARATE part
of your log please.

If you send interim logs, please make sure that you also send a 'FINAL' log
showing ALL your loggings for the CLE.

We will send the usual 'Any More Logs?' email to NDB List at about
19:00 UTC on Tuesday so you can see that your log has been found OK.

Do make sure that your Final log has arrived on the list by 08:00 UTC on
Wednesday 27th May at the very latest.

Joachim and I hope to complete the combined results within two days or so.

PLANNING YOUR LISTENING

It will really help you to plan your listening if you go to the excellent
Rxx Database  https://www.classaxe.com/dx/ndb/reu  (Europe)
(Replace the 'reu' by 'rna' if you are in North America, 'rww' elsewhere)

THE KEY PLACE to start entering details of what you want is 'Signal
Locations - GSQs'.

Put a 2-letter FIELD id in that box to see all the NDBs in that Field that
have been logged from your part of the World (i.e. EU or NA or other).
You could choose to alter the resulting list in lots of different ways:
 
 Select 'Only active' (bottom right).

 Enter your own Country or State in 'Heard Here'.

 Select a specific listener (yourself?) in 'Logged by' – BUT you might then miss a beacon that you haven’t heard so far.

  Add extra locator Field(s) in the 'GSQs' box, separated by blanks.

   - In ANY of the above, you can select 'Map' instead of 'List' (top right)

  Add your own full locator (6 characters) in 'Distance - From GSQ' to see the distances and bearings from your location.

  In 'Sort By' (bottom line) select GSQ.

Getting cleverer (!) you could use the wild card _ (an underscore) to see
details of all Fields with the same column of Longitude or row of Latitude
e.g.  I_  selects all of locator column I (0  to 20 degrees west),  _O would give all of row O (50 to 60 degrees north).

Good Listening

73  

Brian
----------------------------------------------------------------------
From: Brian Keyte G3SIA                ndbcle'at'gmail.com
Location: Surrey, SE England          (CLE coordinator)
----------------------------------------------------------------------

  As usual a few of us may choose to listen via a REMOTE RECEIVER,
  with permission if required - its own location will be their temporary
  home Field and its nearest active NDB should be logged, if known.

  A remote listener may NOT also use another receiver, whether local
  or remote, to obtain further loggings for the same CLE.


===================================================

The upcoming ‘BR’ will be upon us shortly (more details later), but the pending activity brought back some of my early ‘bug memories’ and the good times as a young ham.


I first learned CW in Boy Scouts at age 12 and was pretty excited since I had been shortwave listening by then for about three years ... finally I was going to know what all those dots and dashes I had been hearing were all about!


Unfortunately, to no fault of our well-meaning Scoutmaster, we all learned it the wrong way ... from ‘flashcards’. This made the learning curve a lot harder but in a few months I was copying code off the air and discovering the exciting new world of amateur radio.

By the time I was old enough to legally get my licence (age 15), I could comfortably copy 40wpm and had no trouble with the required 13wpm test.

Having taken the test day off school for the exam and to travel to downtown Vancouver on the bus, there was nobody in the city happier than me when I walked out of the almost five hour exam as ‘VE7ANP’!

Back then, in ‘63, the exam consisted of five parts and a ‘pass’ was required for all of them or you were sent packing for 30 days. The CW receiving test required 100% copy at 13wpm, with the same speed for the sending test. I think it was for three minutes. Next was a multiple choice test on regulations that consisted of about 50 questions. The fourth section required the (unaided) drawing, in schematic form, of a crystal controlled two-stage transmitter, a simple superhetrodyne receiver, an A.M. modulator, a full-wave power supply, some form of over- modulation indicator and a key-click-filter. The final section was an oral exam, as the examiner made you explain your circuit drawings while he probed with questions that were designed to trip up innocent kids that had foolishly ventured downtown.                                                                                                                                                                
There were two radio inspectors in the office back then, but getting one of them in particular, was the equivalent of drawing the proverbial short-straw ... ‘old man Baxter’.

He was a giant of a man, standing well over six feet tall, suspender-laden with a jowly face and saggy pants ... along with the growl of a drill sergeant. I quickly realized that I may have been better off staying in school that morning, as OM Baxter was sitting behind the desk, waiting for me, when I shakily opened the door marked ‘RADIO EXAMINATIONS’.

As it turned out, the OM loved CW and when I breezed through the CW tests with no glitches and speed to spare, his rough edges vanished as he seemed to warm up to me. I learned later that almost all prospective examinees failed the CW test miserably on their first go and were given a 30 day time-out ... it seemed that my Boy Scout days were paying-off in spite of the numerous mid-winter rain-soaked Scouting equivalents of the Bataan Death March, that put me off of camping for the rest of my life.

For the first several months on the air, I used my venerable old brass handkey that I was very comfortable with. I only wish that my hand-sent CW was as good today as it was back then ... something I should really work on again. Although I could send at a fairly good clip, it wasn’t long before I was working a lot of guys that were sending even faster, with their bugs. Back then, electronic keyers were just starting to dribble onto the scene and most CW diehards were using a Vibroplex, and boy did they sound great!

One of the popular radio-joints of the era was ‘R-P’ (Rendell-Parret Electronics) on 4th Avenue, started by Hedley Rendell, VE7XW and Bill Parett, VE7AM, who lived above the store. For many years on Tuesday nights, Hedley hosted the Vancouver Amateur Radio Club’s ‘Code and Theory’ class in his basement rec-room. The class was taught by a very kind and gifted teacher, Al Erdman, VE7AQW, the radio engineer for local AM powerhouse, CJOR, in Vancouver. Over the years, between Al and Hedley, dozens of new hams realized their dreams thanks to their their weekly commitment for which I will be forever grateful.

Now Saturday mornings at ‘R-P’ was a ‘whose-who’ of local hams, all dropping by to see what gear had popped-up in the trade-in section of the store, usually adorned with various Hallicrafters, Hammarlunds or Collins rigs ... stuff I could never afford but could at least touch and turn the dials before they found new homes. There were usually a few guys from the, ‘by invitation only’, Vancouver DX Club. To their credit, most were gracious enough to treat a new 16 year-old ham like one of their own and it didn’t take them long to convince me that I really should get a ‘bug’ if I was going to climb the DX-ladder and get into the pileups ... hmmm, pileups with my DX-20?

It seemed clear that a bug was in my future and the most affordable for a 16 year old was this one coming from Japan.





Although they were all likely manufactured in the same factory, the ‘BK-100’ was sold throughout North America under several different names. Back then, most of the affordable radio toys in Vancouver were coming from Japan ... and for a 16 year old radio nut, their stuff was a lot cheaper to buy than anything from the states.

RP imported a pile of these nice inexpensive BK-100s so I doled out some of my hard-earned cash to get my foot precariously planted on the DX-ladder’s bottom rung. I soon became fairly adept with it and after putting up a full size 40m groundplane on the roof of my parent’s very high house, I was actually able to work Don, W9WNV, at one of his exotics South Pacific stops ... with the bug ... in a pileup ... with the DX-20!




Eventually I had enough saved to buy a real Vibroplex, costing twice as much as the BK-100 ... which unfortunately saw very little use thereafter.

For the upcoming 'BR', I’ve decided to use the BK-100 along with my crystal-controlled 20 watt 'RK-39' power oscillator on both 80 and 40m, but in the  meantime  I’ll be practicing as much as possible on 7050 with the bug.





Here are all the details for the spring 'BR':


The Samuel F. Morse Amateur Radio Club, a Sacramento, California based CW enthusiast club wanted a special time to bring bug operators together on the air. In the same spirit as ARRL's Straight Key Night, participants are encouraged to make simple, conversational, “chewing-the-fat”, "Rag Chew" QSOs using their bug type key. This is an opportunity to exercise, share and exhibit your personalized fist. This is NOT a contest. Simply Call "CQ BR" so folks know you are a Bug Roundup Participant. Grab that bug, clean those contacts, and let’er fly! Let’s hear that “Banana Boat / Lake Erie Swing" or that commercial KPH/WCC quality fist.

Reserve the day! Friday May 15th - Sunday May 17th, 2020
5 PM  PDST (LOCAL) Friday - 5 PM PDST Sunday or May 16-18 UTC (0000 - 0000 UTC)
 
For more information, to register your station and key for participation, and to help assist in spotting, potentially increasing QSOs, an On-line chat window link can be found near the bottom of Bug Roundup home page located at https://w6sfm.com/bug-roundup/ We hope to hear you all on the air!

It looks like a fun event and might make another good opportunity to spark-up your old boatanchor on CW once again. As well, it seems you can keep track of activity and possibly set up skeds via their chat-window page during the BR. I'll be watching for you with my BK-100!

It's another CLE weekend!

During these stressful times, the CLE might hopefully provide some peaceful relief for you.




'CLE's are 'Co-ordinated Listening Events, and NDB DXers around the world focus their listening time on one small slice of the NDB spectrum.

This time the hunting ground is the 15kHz slice from 385.0 - 399.9 kHz. kHz

A good target for this one is little 'OO' (391kHz) in Oshawa, Ontario, shown above. 'OO-391' has a measured output of just over 7 watts yet is heard consistently all over North America including the west coast as well as in Europe! Hearing 'OO' is a very good test for your receiving system!

Listen for 'OO's' upper sideband on 391.402kHz with your receiver in the CW mode.

From CLE coordinator Brian Keyte (G3SIA), comes the following CLE info:

Hello all,

Have you tried one of our Co-ordinated Listening Events yet?
Whether short logs or long ones, making them is enjoyed by
beginners and experts alike - and reading them is enjoyed by all.

Our 255th Coordinated Listening Event starts this Friday.  We
should have plenty of NDBs to find in this 15 kHz frequency range.
Even the Pacific region (Oceania) is quite well supplied this time.

     Days:    Friday 24 April - Monday 27 April 2020
     Times:   Start and end at midday your LOCAL time
     Range:   385 - 399.9 kHz

Please log all the NDBs that you can identify with nominal (listed)
frequencies in the range - it includes 385 kHz, but not 400 kHz
 - plus any UNIDs that you come across there.

Send your final log to the List (no attachments please and ideally
in a plain text email) with 'FINAL CLE255' in its title (important).

Show on each line:
    #   The Date (e.g.  '2020-04-24', etc.,  or just '24' )
    #   The Time in UTC (the day changes at 00:00 UTC).
    #   kHz  - the nominal published frequency, if known.
    #   The Call Ident.

Please show those main items FIRST.  Other optional details
such as Location and Distance go LATER in the same line.
As always, of course, tell us your own location and give brief
details of the equipment that you were using during the Event.

We will send the usual 'Any More Logs?' email at about
19:00 UTC on Tuesday so you can check that your log has
been found OK.
Do make sure that your log has arrived on the List by
08:00 UTC on Wednesday 29 April at the very latest.
We hope to complete making the combined results within
a day or two.

You can find full details about current and past CLEs from the
CLE page http://www.ndblist.info/cle.htm   It includes access
to the CLE255 seeklists for your part of the World, prepared
from all the previous loggings in Rxx.

Good listening
- enjoy the CLE and take care.
      Brian and Joachim
------------------------------------------------------------------
From:      Brian Keyte G3SIA      ndbcle'at'gmail.com
Location:  Surrey,  SE England     (CLE coordinator)
------------------------------------------------------------------

  (If you would like to listen remotely you could use any one remote
  receiver for your loggings, stating its location and owner and with
  their permission if required.  A remote listener may NOT also use
  another receiver, local or remote, to make further loggings for the
  same CLE)

The following blog was originally published in 2016 but is still relevant today.


Utilitech Pro Soft White LED Bulb

A recent posting by Phil, KO6BB, to Yahoo Group's ndblist, described his recent search for some LED lamps to replace the CFL's in his shack / radio workbench area. If you have been wondering how much RFI that LED lamps might be producing, you may find Phil's findings of some value.








"Recap  

I had a 60W equivalent CFL in the floor lamp directly over my operating position. I'd tried a 100W equiv one but it was extremely noisy! Also a couple CFLs in the ceiling lamp.

This is a floor lamp with a crookneck at the top and a triangular metal
shade reminiscent of the old style desk lamps, bulb is horiz to the
floor. I've used it for years and like it because it places the light
directly over the operating position work area (keyboard, radios etc).
The actual bulb was about 4.5 inches from the front of the Softrock SDR
receiver (in a plastic case), with the base of the lamp (where the
electronics are) about 7.5 inches (somebody asked about the distances).

This coupled a LOT of RFI directly into the SDR, visible on the
waterfall. For best results when recording and having the light on I'd
slip a 60W incandescent lamp in place of the CFL. The lamp is also
about 16 inches above the operating table, and when listening to ANY
portable radio on the table, if it was in the AM or Longwave band and
using the built in loopstick antenna, got a LOT of RFI from the lamp
(unless the lamp was off ;-)

So today I went down to Lowes (we have a Costco, but I don't have a
card) and looked at their LED lamp offerings. As I expected they had a
large variety of them, from a low cost 3 pack for ~$9.00 for 60W units
to about $18.00 or so each (Sylvania). From what I read here I wanted
to avoid the REALLY cheap ones as some reported them to be 'noisy'.
Also, I wanted to put a 75W equivalent unit in the one over the
operating position, and a pair of 100W equivalent units in the ceiling
lamp. All three had CFLs, and if I walked around the radio room with a
portable radio and the ceiling lamp on I could hear it's 'hash' anywhere
in the room. . .

The ones I settled on were a brand I'd never heard of, "UtiliTech Pro"
soft white, 75W for the bench and 2 100W ones for the ceiling. They
were what I'd call "mid-priced", $8.98 for the 75W and $9.98 for the
100W ones.

Specs:

75 W one draws 12W and gives 1100 Lumens.
100W one draws 16.5W and gives 1600 Lumens (the pair in the ceiling
should then be 3200 Lumens if I calculated right).

How low is the RFI to my Radios?

75W one over the bench:
NO trace from the lamp electronics visible in the SDR waterfall at
all. With a portable radio on the bench-top, NO audible RFI. Put a
portable radio up to the "bulb" part (light area) and with no station
tuned in can't hear ANY RFI. Move the portable to the base area of the
lamps there is SOME RFI, but I won't be putting the radio that close to
the lamp, move it a couple inches away and the noise disappears.

100W ones in the ceiling lamp, NO audible RFI in the portable when
walking around the room, RFI just barely perceptible right next to the
light wall switch that turns the lamp on, again, audible IF I put the
radio right up to the base of the lamps, not a likely real-world scenario!

Upshot? 

Based on the sample of three that I bought and the almost
non-existent RFI from them I'd consider the UtiliTech Pro lamps to be a
good product and suitable for use in the radio room. I consider them
good value for the ~$30.00 I spent for three."

If you have tested anything similar (other brands / models), please let me know and I will add it to Phil's helpful information.

KO6BB's website can be found here, along with some of his homebrew equipment.

Once again it's a CLE weekend.

During these stressful times, the CLE might hopefully provide some peaceful relief for you.






'CLE's are 'Co-ordinated Listening Events, and NDB DXers around the world focus their listening time on one small slice of the NDB spectrum.

This time the hunting ground is the 20 slice from 400.0 - 419.9 kHz. kHz

A good target for this one is MOG (404kHz) in Montague, California, up near the border with Oregon. It gets out very well and has been logged from Finland to Hawaii. Its been on-and-off of late so maybe you can catch it while it's on again!

Listen for MOG's upper sideband on 405.027kHz with your receiver in the CW mode.

From CLE coordinator Brian Keyte (G3SIA), comes the following CLE info:

Hello all,

Our 254th Coordinated Listening Event starts on Friday.
This frequency range is not packed with signals for any of us, but if conditions are OK there should be some nice surprises.

Do join in, whether you have days to spare, or only an hour or so over the weekend.  Staying at home seems to be essential advice for most of us at present - this could be a great way of spending time there!

    Days:    Friday 27 March - Monday 30 March 2020
    Times:   Start and end at midday your LOCAL time
             (Many of us will be changing our home clocks this weekend -
               however UTC time continues unaffected)
    Range:   400 - 419.9 kHz

Please log all the NDBs that you can identify with nominal (listed) frequencies in the range - it includes 400 kHz, but not 420 kHz - plus any UNIDs that you come across there.

Send your final log to the List (no attachments please and ideally in a plain text email) with ‘FINAL CLE254’ in its title.

Show on each line:
    #   The Date (e.g.  '2020-03-27', etc.,  or just '27' )
    #   The Time in UTC (the day changes at 00:00 UTC).
    #   kHz  - the nominal published frequency, if known.
    #   The Call Ident.

Please show those main items FIRST.  Other optional details such as Location and Distance go LATER in the same line.
As always, of course, tell us your own location and brief details of the equipment that you were using during the Event.

We will send the usual 'Any More Logs?' email at about 19:00 UTC on Tuesday so that you can check that your log has been found OK.
Do make sure that your log has arrived on the List by 08:00 UTC on Wednesday 1 April at the very latest.
We hope to complete making the combined results within a day or two.

You can find full details about current and past CLEs from the CLE page http://www.ndblist.info/cle.htm   It includes access to CLE254 seeklists for your part of the World, prepared from the previous loggings in Rxx.  (Thanks, Martin and Alan, for your help with that)

Good listening
 - enjoy the CLE and do take care of yourself and your family.
      Brian and Joachim
-----------------------------------------------------------------
From:      Brian Keyte G3SIA      ndbcle'at'gmail.com
Location:  Surrey,  SE England     (CLE coordinator)
-----------------------------------------------------------------

  (If you would like to listen remotely  you could use any one remote
  receiver for your loggings, stating its location and owner and with their
  permission if required.  A remote listener may NOT also use another
  receiver, local or remote, to make further loggings for the same CLE)