A little bit here, a little bit there

I have had a fantastic weekend, that is that its been busy but fun. enjoying the best of the Autumn weather with XYL out and about in the Dorset and Hampshire countryside.

Enjoying a day out with XYL following the steps of Jack Hargreaves

I even finally made it back to Hengistbury Head, sans radio, but thoroughly enjoyed the walk and exercise, as did Sweety.

Hengistbury Head mid October is still lovely

Later on that same day, we headed off around the New Forest, ending up in the beautiful Milford on Sea.

Milford on Sea looking over to the Needles at the IoW

Today I really wasn’t in the mood to be vocal on VHF/UHF, but another day I can see myself bringing one of my handhelds and operating GB3IW from here. Its a gorgeous location and would be great to have a QSO. I dare say that /M with the 705 so near the sea would also have benefits, so if anything I have found an exciting new location to potentially operate from. Parking was ample and with plenty of distance, plus a fantastic drive thu great scenery.

Back at the QTH all my antennas have been down for a few weeks, having been away celebrating and the pace of my day job plus getting back to speed with studying, I’ve not had the necessary time to really enjoy with radio, thankfully today I did get the 6BTV back up and the IC7300 back online. There is still quite a bit of work to do, but wanted to get back ‘on the air’, the most important thing is that i have managed to ‘lift’ the shelves on my operating desk to allow the boxes to go under. It may still look a mess, but its getting there, and trust me these things take time !

shelf moved, boxes can now be stored underneath !

I still have a fair bit to do as you can see, but am glad to make small amounts of progress. I’m hoping I will have things I really want them to by next week and then continue to tune and tweak the 6btv some more.

I’m glad to at least be producing WSPR data once more for the web technologies site and am getting some interesting reports in the DX10 reports. The SNR on 40m is looking particularly good post 6btv adjustments.

SMR Report with interesting results

Whilst I have strong SNRs in the list, the SNR of 1 to HE9FER over 853 miles away is particularly impressive on 1w of power.

Hoping for good signal reports in the coming week, will try to be active on SSTV early in the morning, hopefully the 20m band wont be quite so crazy full of contesters bleeding in the SSTV frequency !

Until then, take care and stay safe.

Alan / 2E0FWE

SSTV Update

Have had a great weekend on SSTV on 20m. Thunderstorms are incoming to QTH in IO90BS so have taken the antenna down for now, but will be back once they pass.

I’ve been able to setup an automated upload. The site is here and can also be found on the tabs of the main site. I’ve also subscribed to World SSTV cams, so other amateur radio users can see their reception at my site easily as well.

I’ll take you thru how I setup the Windows and Linux side.

On the Windows host I download and installed KE5RS FTP Widget which is available free with registration info of call/sign location. Run the setup and let it install in the default locations.

The next step on the windows host is to create the local SSTV directory – this is in *addition* to the SSTV images MMSSTV uses.

I opened a command prompt (Start / Run / CMD) and typed the following

cd c:/
mkdir sstvimages

I created a shortcut to the desktop for FTP Widget. This is useful as I found running it as administrator overcome any file permissions issues on the local side. This probably due to the mechanism and file permission settings that MMSTV uses to duplicate the files, running as administrator fixed this.

Create a desktop shortcut, put it next to your MMSTV shortcut if you have one for easy access 🙂

I then run as administrator from the desktop.

run as administrator to avoid permission issues
Select Properties to open the configuration settings
Configure the paths

Now if you have not used FTP in the past the cocent of local and remote paths will be new, and each FTP client will have its own interpretation of how to set it. Usually the remote system is a Linux/Unix system and the actual full remote path is typically /home/sstvimagesusename/images but the FTP Widget takes the login from the FTP Server and uses the short path name, in this case images.

You’ll need to set the local drive to the one created in the DOS prompt earlier. In image name properties, only change the name if you really must, this is important as the crude template i will provide below depends on the filenames matching. You’ll also want to keep the Image history to what ever you iike, by default its 3, I upped it to 12 as this gives a better log of the images.

On the Linux side I’m using vsftpd. I dont mind saying that running FTP in 2021 is slightly unusual, most file transfers are done over SSH / SFTP more recently, but FTP still has its purposes.

I would suggest running vsftpd as it has options for TLS/SSL as well as chrooting. ‘chrooting’ is a method of ‘jailing’ a user to their own location, so in the worst case the credentials are discovered, the only space they can easily access is that of their own home directory, not the ntire OS filesystem (old FTPs that allowed system access could easily be used to accessing /var/log/ and from there discovering other usernames and ‘brute forcing’ the credentials).

Here is the full example vfstpd.conf , you dont need all of this, but from the default you can see the deltas.

# Example config file /etc/vsftpd.conf
#
# The default compiled in settings are fairly paranoid. This sample file
# loosens things up a bit, to make the ftp daemon more usable.
# Please see vsftpd.conf.5 for all compiled in defaults.
#
# READ THIS: This example file is NOT an exhaustive list of vsftpd options.
# Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd's
# capabilities.
#
#
# Run standalone?  vsftpd can run either from an inetd or as a standalone
# daemon started from an initscript.
listen=NO
#
# This directive enables listening on IPv6 sockets. By default, listening
# on the IPv6 "any" address (::) will accept connections from both IPv6
# and IPv4 clients. It is not necessary to listen on *both* IPv4 and IPv6
# sockets. If you want that (perhaps because you want to listen on specific
# addresses) then you must run two copies of vsftpd with two configuration
# files.
listen_ipv6=YES
#
# Allow anonymous FTP? (Disabled by default).
anonymous_enable=NO
#
# Uncomment this to allow local users to log in.
local_enable=YES
#
# Uncomment this to enable any form of FTP write command.
write_enable=YES
#
# Default umask for local users is 077. You may wish to change this to 022,
# if your users expect that (022 is used by most other ftpd's)
#local_umask=022
#
# Uncomment this to allow the anonymous FTP user to upload files. This only
# has an effect if the above global write enable is activated. Also, you will
# obviously need to create a directory writable by the FTP user.
#anon_upload_enable=YES
#
# Uncomment this if you want the anonymous FTP user to be able to create
# new directories.
#anon_mkdir_write_enable=YES
#
# Activate directory messages - messages given to remote users when they
# go into a certain directory.
dirmessage_enable=YES
#
# If enabled, vsftpd will display directory listings with the time
# in  your  local  time  zone.  The default is to display GMT. The
# times returned by the MDTM FTP command are also affected by this
# option.
use_localtime=YES
#
# Activate logging of uploads/downloads.
xferlog_enable=YES
#
# Make sure PORT transfer connections originate from port 20 (ftp-data).
connect_from_port_20=YES
#
# If you want, you can arrange for uploaded anonymous files to be owned by
# a different user. Note! Using "root" for uploaded files is not
# recommended!
#chown_uploads=YES
#chown_username=whoever
#
# You may override where the log file goes if you like. The default is shown
# below.
#xferlog_file=/var/log/vsftpd.log
#
# If you want, you can have your log file in standard ftpd xferlog format.
# Note that the default log file location is /var/log/xferlog in this case.
#xferlog_std_format=YES
#
# You may change the default value for timing out an idle session.
#idle_session_timeout=600
#
# You may change the default value for timing out a data connection.
#data_connection_timeout=120
#
# It is recommended that you define on your system a unique user which the
# ftp server can use as a totally isolated and unprivileged user.
#nopriv_user=ftpsecure
#
# Enable this and the server will recognise asynchronous ABOR requests. Not
# recommended for security (the code is non-trivial). Not enabling it,
# however, may confuse older FTP clients.
#async_abor_enable=YES
#
# By default the server will pretend to allow ASCII mode but in fact ignore
# the request. Turn on the below options to have the server actually do ASCII
# mangling on files when in ASCII mode.
# Beware that on some FTP servers, ASCII support allows a denial of service
# attack (DoS) via the command "SIZE /big/file" in ASCII mode. vsftpd
# predicted this attack and has always been safe, reporting the size of the
# raw file.
# ASCII mangling is a horrible feature of the protocol.
#ascii_upload_enable=YES
#ascii_download_enable=YES
#
# You may fully customise the login banner string:
#ftpd_banner=Welcome to blah FTP service.
#
# You may specify a file of disallowed anonymous e-mail addresses. Apparently
# useful for combatting certain DoS attacks.
#deny_email_enable=YES
# (default follows)
#banned_email_file=/etc/vsftpd.banned_emails
#
# You may restrict local users to their home directories.  See the FAQ for
# the possible risks in this before using chroot_local_user or
# chroot_list_enable below.
chroot_local_user=YES
#
# You may specify an explicit list of local users to chroot() to their home
# directory. If chroot_local_user is YES, then this list becomes a list of
# users to NOT chroot().
# (Warning! chroot'ing can be very dangerous. If using chroot, make sure that
# the user does not have write access to the top level directory within the
# chroot)
chroot_local_user=YES
chroot_list_enable=YES
# (default follows)
chroot_list_file=/etc/vsftpd.chroot_list
#
# You may activate the "-R" option to the builtin ls. This is disabled by
# default to avoid remote users being able to cause excessive I/O on large
# sites. However, some broken FTP clients such as "ncftp" and "mirror" assume
# the presence of the "-R" option, so there is a strong case for enabling it.
#ls_recurse_enable=YES
#
# Customization
#
# Some of vsftpd's settings don't fit the filesystem layout by
# default.
#
# This option should be the name of a directory which is empty.  Also, the
# directory should not be writable by the ftp user. This directory is used
# as a secure chroot() jail at times vsftpd does not require filesystem
# access.
secure_chroot_dir=/var/run/vsftpd/empty
#
# This string is the name of the PAM service vsftpd will use.
pam_service_name=vsftpd
#
# This option specifies the location of the RSA certificate to use for SSL
# encrypted connections.
rsa_cert_file=/etc/ssl/private/vsftpd.pem
rsa_private_key_file=/etc/ssl/private/vsftpd.pem
ssl_enable=YES

#
# Uncomment this to indicate that vsftpd use a utf8 filesystem.
#utf8_filesystem=YES
#
force_local_logins_ssl=NO
force_local_data_ssl=NO

#
#
allow_writeable_chroot=YES

The important settings are

chroot_local_user=YES
chroot_list_enable=YES
allow_writeable_chroot=YES

And the create a vsftpd.chroot_list by echoing the username of the sstvftp user into the required config, i.e.

echo "sstvusername > /etc/vsftpd.chroot_list"

Obviously if you already have vfstpd setup and you should know about chrooting, so use >> rather than > as to not to truncate the chroot_list file.

Now create the Linux local sstv user, this will be the same as the username just echoed

sudo bash
useradd sstvusername -m -d /home/sstvusername sstvusername
passwd sstvusername
su - sstvusername
mkdir images

Be sure to keep a log of the password, of course you can always reset it, but it makes setting the FTP Widget properties easier.

You will then want to add the HTML template. Now i make no apologies for how awful this HTML is, but it will get you up and running, i’m planning to do redo this in HTML4, CSS and what ever JavaScript is necessary.

curl https://hamradio.knipmeyer.co.uk/sstv/ > index.html

You will then need to make your webserver (typically apache) serve home directory content. Rather than re-write the excellent tutorial already provided by Apache, follow this. You may have alternative configurations/different http servers, but Apache is simple and well supported.

With the Unix side complete, its time to finish off the settings for the FTP Widget and SSTV.

FTP Widget Settings

Follow the settings given above, putting in your FTP address, either the hostname or IP address. i.e. myftpserver.bob52.com, <n>.<n>.<n>.<n>. You don’t ned to put in the URI ( ftp:// ) .

The next step is to configure MMSTV to copy the received files into the FTP SSTVPics directory.

History tab, right click, Auto Copy, Assign another folder name

In SSTV goto the History tab and right click the image, select ‘auto copy to another folder’ and assign the folder name to the SSTV c:\sstvimages directory.

With that your received files will now not only be stored locally, they will be automatically FTP’d to your webserver ! If everything goes well, you’ll end up with a page whereby other SSTV users can see how their images are being received and a nice catalogue of recent images for yourself.

Your own SSTV reception page !

The next optional step is to setup registration with World SSTV Cams.

Complete the fields to add your site

Complete the fields to add your site, and with that your site will be added for the whole world to see with thumb-nail updates of the most recent reception of images !

Welcome to the World SSTV site !

I hope this gets you up and running with the exciting and interesting world of SSTV !

10m skip FT8

Having kept an eye on the Kiwi WebSDR I could see plenty of activity on the 10m band, a sure sign that the ‘skip’ from the ‘E Layer’ had picked up. For those ‘new’ to skip, there is an excellent write up here by VK3FS on the behaviour of this ionospheric band.

Here I’ll be showing over the course of just a few short hours how the E-layer built up, the collapsed.

10m skip at 18:04 UTC in IO90BS

Tuning to the 10M frequency for FT8, 28.074, there was allot of activity, transmissions from Europe where coming in the strongest, and even as far as Brazil in South America. It was incredble to see the band so ‘alive’

pskreporter on 10m transmitting 40w

I started transmitting on what had now become a very noisy channel, with plenty of DX around Europe coming in very strong. My own signal from the Hustler 6BTV and 40 watts of power resulted in the QSO’s started to roll in, with little to no reties.

Racking up the QSO’s on FT8

Grid Tracker really came into its own here, making logging to QRZ effortless so I was able to focus on QSO’s rather than uploading ADIF files. This resulted in 2 confirmed QSO’s almost immediately, with an impressive the furthest being 950 miles to IS0SLM in Dolianova.

Band conditions at 19:22 UTC showing the changed in the ‘E Layer’ propagation

Just as quickly the band and opened up, the conditions returned back to the regular behaviour for the E-layer, as seen in the 19:22 and 19:39 signal spectrum from WSJTX.

Band conditions at 19:39 – signals were getting much weaker in WSJTX Wide Graph

By 20:30 I could still be heard but the 6BTV, a vertical and with that being non-directional, wasn’t pulling in the weaker signals for a QSO to be completed.

10m reach at 20:33 with 40W

My reception reports via Pskreporter showed a big difference. I’d be interested to know if this was a phenomenon of the grey-line as the sun set or just the charge in the E-layer collapsing and limiting propagation again.

9 10m QSOs with some great reports and distances

I was still really happy in this ‘short’ time to get so many FT8 QSO’s via 10m. It really is a fascinating band, and one I will do more research with as I continue to improve the performance of the 6BTV and also work 6m with my Yagi antenna

The ‘coolest’ FT8 contact yet ?

Was one of those nights when I couldn’t get my head down after a great Easter bank holiday weekend, so had a little play on FT8 in the small hours. Having used WSJT-X for quite some time I wanted to experiment with other FT8 software, and gave JTDX a try. I followed the setup documents and was soon transmitting and receiving. Some say JTDX has better decode than WSJT-X – I think time will tell.

Tonight (Or is that very early this morning) I had what must be the coolest FT8 contact yet tho

DT8A – 8482 mi on the South Shetland Islands

I have never heard of the “South Shetland Islands” until they appeared in the JTDX log – I was quick to click and respond, then patiently wait in the hope my call got responded to. Sure enough, with a few minutes and on 20 watts of power DT8A responded and my signal report was received. What I do with all FT8 contacts is to check the QRZ page and read up to add a little more ‘this is more than just a signal report’ to the QSO, I was amazed at DT8A’s page and the fantastic photos !

In particular as my good lady is South Korean, I found it very interesting that Mr Lee was stationed in such a remote part of the world !

So glad to have reached Mr Lee and I hope his work/research in the South Shetlands goes really well !

Tidying the shack

Was feeling a bit under the weather (aka sick) this weekend, nothing serious, but not well enough to think that working outside in the cold would help me feel any better.

Undettered I looked at what can be done in the shack (aka my home-office) and there is always plenty to do ! With the Nebula build the tidyness got a big neglected and mutliple things stated but not really progressed in a considerable way.

If any of you rememeber, or care to look back at earlier posts, you can see my ‘shack’ has really evolved. All the synths have move next door to their own mixing desk and imac just for running music related apps, so that has allowed me to fully expand one side of the room with other computer equipment

I am using a smaller ZMX862 mixer into a Yamaha A-S201. I take the line-out from the dual-line BHI noise canceller into the mixer, then into the amp. The sound quality is amazing (should record something when i get time). The down side to this setup is the absence of an integral USB interface that is on the larger mixing desk now used for the synths. To overcome this I’ve ordered a Behringer UCA222 USB Audio interface which will allow me to both record and take sound from the mac (why did they ever remove the optical line out ?!?!).

I’ve also setup my build bench used for kits and linux raspberry pis & servers to faciliate the use of the various SDR’s I have. My aim is to have a number of SDRs setup, ideally I will a full band SDR available over the internet. OpenWebRX is available from github whilst based on Python 2, looks good for the job for now.

A slightly tidier shack, more to be done, but progress !

I also had a ‘play’ on other frequencies over the weekend and was amazed to make contacts on the 10m band. I had always thought that 28Mhz would be pretty much line of sight, so was amazed to make make contacts in Israel and Spain !

FT8 Contacts on 10m – Spain, Israel and England

Was making endless contacts on 80, 40 and 30m over the weekend as my QRZ page will show !

Whilst taking the doggo out for a walk i noticed the 80m wire was ‘flapping’ somewhat, and on closer inspection, 20m wire had snapped completely ! I had probably done these too tightly, so for now have taken the mast down. With my health not at the best today, i just got the antenna down so i could inspect it more closely, thankfully 20m had just snaped (easily replaced) and a clip-carabina out of place on 80m had made it very loose.

I still have some fetttling to do on all the bands, so this will provide a good opputnity to get the vertical wires installed better thant he initial delviery.

I’m hoping i will feel somewhat better next week and can continue my exterior projects, esp the UHF/VHF 2m/70cm yagi, but will get the Nebula back up again as soon as possible, weather and my health permitting !

Take care & stay safe – Alan 2E0FWE

DX Commander – Build activities

It has been a lovely sunny down here in Bournemouth and have been able to take full advantage of the good weather by getting on with assembling and tidying the gardens.

First off i set about extending the Nebula as far as I could on my own. With much twist I managed to get it to 17m32cm, which is what the docs say is ok to use.

DX Commander Nebula – 17m32cm

I dont mind saying it took me a few times to get the antenna out fully, the first attempt with trying to get it to lock from the bottom-most sections didnt work out, so i put it all back down, then carefully took out the furthest (top) sections carefull and locked each section. There is a fair amount of flex, but I’m stil careful as the top looksl like it could snap if careless exertion took place.

Once extended, i set about putting electrical tape on each joint of the mast, to give additonal support and minimize any tension scratching from the jubilee clips.

Electrical tape was appliedto each joint (some had to be corrected, but mostly ok)

with the mast now ready for the plates, i headed back in and started work on those.

Building the radial and element plates was straight forward. The bolts, washers and wingnuts fitted perfectly with little or no resistance going into their thread – good manufaturing process there. The plates themselves look great and built to last. They are considerably bigger than the ‘classic’ plates, the amount of radial mounting points is great – and its those raidals which really helpin with the direction and ability to ‘push’ the transmission out.

I’m going to follow Callum’s advice and start with 3 elements, namely, 80, 40 and 20 – as those are the bands i use the most. When i have all the SWR for each band as good as they should be i will add all the elements for more band coverage, but walk before I can run so to speak!

Alignment by using the documentation provided was easy enough and one less job to do outside. I dont like littering and despite my best attempts previousy the label-backs have flown off after sticking on, theres a fair bit of nature (birds,insects,etc) and I dont want to ruin their habitat with sticky label backings (what a hedgehog makes of an 18m mast has yet to b eseen.. I did have a robin visitor earlier this year tho !).

With the spreaders in place i was able to take the measurements of the heights to calculate the length of the guy wires. I’m going to use (as per doc) 1, 2 4 spreader points for guying, but will start with #1 first to ensure my measurements and cutting are accurate. All values are cm

SpreaderHeightTime Selfx=(h*h)+(d*d)sqrt(x)total rope
131096100346100588.302
2580336400586400765.767
41134128595615359561239.336
7780.221
Diameter500
Guy rope length in sqrt(x)

I will double check these measurements again, so if your planning to do this between now and tomorrow morning – please do check your measurements as mine havent been applied yet!

I then set about tidying everything up and removing the existing end-fed wire. This took quite a bit of time and the end fed got caught in the tree – thankfully the tree wasnt damaged and a good ‘yank’ set it free ! Here is my video of the tour of the QTH after removing the end fed and the nebula work-in-progress.

Nebula Day one progres

And with that I then moved the nebula to the side garden where it will be erected. It was a real handful to move but i got it around the corner of the house from the front garden to the side eventually and have safely mounted it above ground height.

Tomorrows weather doesnt look as good as todays, so progress may be limited, however I’m pleased with what i have acheived so far, and as ever, am greateful for all the hard work Callum has put into creating what I’m sure will become a legendary antenna.

Stay safe and hope to publish more progress tomorrow !

Alan/2E0FWE

IC-705 – 2E0FWE/M kinda

So having not only being able to listen to G5TM on air today, he published yet another fantastic mobile operating video.

G5TM – Another excellent Mobile session on 15M

I was mulling over what to do today, I always have enough to do, but Tim’s video made the decision for me that I will at least try out my 20M antenna which I had purchased from Thunderpole.

As ever, there was a light drizzle, but i was determined to at least try out the IC-705. My Mazda Bongo already had a fitting for an antenna on it, which hasnt seen much action at all in ove ra year I suspect, but thought I would give it a try.

Mazda Bongo in the New Forest today (no antenna, but a cracking picture with the rainbow!)

I headed out with the the Rig Ex[ert AA-55 and started to read results off the antenna. First reading was ok

First reading off the 20m vertical on the bongo, not bad, but should be better

I took the anntena down and readjusted the bolts, simple enough, especially compared to putting a great big mast/vertical up and cutting/adding lengths each time.

Second attempt – far more reasonable results

The second adjustments brought very good results with almost less than 1:2 SWR across the band, with a very nice low in the morse area (more motivation to learn morse now !) with the SWR at 1.5 to 2.1 on the telephony side of the band I think this is acceptable, ideally i’d like to get it down further across the whole band but for 30 minutes fiddling, this was good enough to start with.

a bump in CW, but <1:2 on the upper half ot the 20m band

I continued my fettling and got the SWR down to 1.03 and less than 1:2 on the SSB telephony range. For a £19.99 antenna, i think this is a satisifactory result. I then went about attaching the IC-705 !

IC-705 in the bongo attached to a 20m whip

So i was very happy with the reception across the 20m band with the whip antenna, apologies for the quality of the video with putting my phone down,etc – i’m not even an ‘amateur’ when it comes to making videos like this, but I will get better 🙂

I tried a test transmit but the SWR was way off the readings the rig-expert had given me, which was slightly disappointing, but if everything went perfectly the first time of trying, it would make it the interesting hobby that it is.

As i said, the mount has been on the bongo for quite some time, and the metal around it has got quite corroded.

Removing the antenna mount from the Bongo revealed more rust

So i have brought in the antenna mount and intend to rub-back the rust and treat it before returning the mount to see if the SWR improves.

Rust on the interior of the clamp

I still am very happy that the intial experience was generally positive and am very much looking forward to operating mobile.

I’ve ordered an ATU kit from america, but that will take some time to come (Jan 2021), but am looking forward to building and trying it out!

Until next time, stay safe and 73

2E0FWE

Nebula update

Fantastic news is that my shipping label notification for the DX Commander Nebula arrived in my inbox. I am really looking forward to this antenna – hopefully it will be with me for this weekend.

I have measured a 5 meter guying radius ready for the whopping 18 meter tall antenna.

18 meter tall !

I reckon the build will take some time, everything is quite scaled up. So now I’m waiting for that big package to come.

Exciting – yes – alot of work to do, VERY MUCH SO !

73

Alan, 2E0FWE

Storm Alex. QRM

I can report that all the rigging and daily inspections insured that the end-fed antenna stayed up well despite storm alex lashing down wind and rain of epic proportion !

Whilst I have been enjoy several QSO’s on other digital modes (SSTV, BSPK) other than FT8, id thought I do an update on the next steps for the End-Fed antenna.

Whilst my signals are not bad, there is a noise floor present. Whilst I have largely removed alot of sources of QRM from ‘the shack’ (see earlier posts on QRM) my end-fed antenna seems particuarly good at picking up ‘noise’. Maybe its good to state what I think noise is as well.

When I tune the radio, I should be able to, ideally, hear all stations on that frequency (and mode). What noise brings is either man-made or remote interference to a weak signal. For noise that is ‘local’ the weak signals hide in a ‘noise’ band, this can be upto S9 for thinks like washing machines/VDSL/construction equipment.

With the ‘local’ noise its possible to use the an external antenna (lets call that a receive antenna) and transmit on the existing antenna, then between the two ‘phase’ the noise until it is no longer present.

I am going to use the MFJ-1028 noise canceller as I was using this already with my Kenwood and DX-Commander multi-band vertical, but as both a send and receive antenna making using of the ‘T/R Delay’ – The Icom 7300 doesnt come with its own ‘receive only’ port unlike its ‘bigger brothers’ in the Icom range, but is easily adapater to have one via the a plug-in kit from Inrad.

The installation looks simple enough as shown in the video below. I face the challenge that I am also using an external ATU (MFJ-993B) so getting both ports in will mean doing the install slightly differenty.

INRAD RX7300 mod

I have a number of antennas i could use as a receive only, but a recommended ‘noise gather’ is the ‘mini-whip’. I picked mine up off ebay and it arrived in a bout a week.

I have yet to install the miniwhip, but have all the necessary parts, including a rather impressive 4th ground pole ! I will be following the guidance from the following video

I will first try using the mini-whipa and end-fed combo and feedback on results !

Hopefully there will be less bad weather in the coming week allowing more ‘build’ work outside, for now i’m glad my masts have stayed up and we are all staying safe at home !

Until next post – 73 !