Tuesday, 31 March 2020

Ham Radio-Ham Radio-The Airspy Youloop is a freaking brilliant passive loop antenna

Ham Radio-The Airspy Youloop is a freaking brilliant passive loop antenna




Click here The Airspy Youloop is a freaking brilliant passive loop antenna


Before I start talking Youloop, I have a little confession to make upfront:
At the Winter SWL Fest when I gave a presentation about Portable SDR DXing, not only did I give attendees the wrong name of the Airspy Youloop antenna, but I also configured it incorrectly, hence the poor performance via my Microsoft Surface Go tablet PC.
I had assumed the crossover component of the antenna was the transformer component. I realized the mistake I made when I saw some of the first promotional photos of the Youloop antenna a few weeks ago.

The crossover connects both sides of the loop while the tee junction contains the transformer.
Doh! I’m trying to forgive myself for making such an obvious mistake, but in my defense–and in the spirit of full disclosure–my antenna was a very early sample prototype without instructions, diagrams, etc. so I set it up imagining it being similar to the homebrew loop Vlado and I built(FYI: When I say “Vlado and I built” it, I really mean, “Vlado built it.”) 
So obviously I made a poor assumption.
Once I assembled the antenna correctly? Wow. Just. Wow!

You loop: The ideal travel antenna for high dynamic range SDRs


The Youloop, Airspy HF+ Discovery, SDRplay RSPdx, and all cables easily fit in my Red Oxx Lil Roy pack.
The Youloop is truly the travel antenna I’ve always wanted for portable SDR DXing. Here’s why:
  • It’s incredibly portable and can be rolled up to fit in a small travel pouch
  • It has all of the low-noise characteristics of other magnetic loop antennas
  • It’s wideband unlike many passive loop designs
  • It requires no variable capacitor or tuner
  • It’s made of quality components
  • It requires no external amplifier nor power source
  • It takes one minute to assemble
  • It’s affordable (~$35 USD shipped)
  • The Airspy Youloop is a freaking brilliant passive loop antenna

Ham Radio-Ham Radio-DX news KL7RRC/p NA-210 Sledge Isl., Alaska

Ham Radio-DX news KL7RRC/p NA-210 Sledge Isl., Alaska


Video KL7RRC/P Sledge Island






Amateur Ham Radio Video KL7RRC/P Sledge Island, Alaska

Ham Radio-DX news KL7RRC_p NA-210 Sledge Isl., Alaska



Monday, 30 March 2020

Ham Radio-Ham Radio-Whistler Scanners Tutorial 6 Trunk Tracking P1 - AIRSHOW WORLD

Ham Radio-Whistler Scanners Tutorial 6 Trunk Tracking P1 - AIRSHOW WORLD






Review: Whistler TRX-2 Digital Scanner

Tim Kirby takes an in-depth look at the Whistler TRX-2 Multi-System Adaptive Digital Trunking Scanner in the UK Band Plan technical configuration supplied by Moonraker





It was another of those emails from our dear editor. Would I like to have a look at the Whistler TRX-2 desktop digital scanner, with the setup as supplied by Moonraker? We’ll come to the difference that means shortly. 


I’d heard great things about the Whistler scanners from various friends and I was keen to try it. 
So, what basic information is available online about this radio? Here is an excerpt: 
‘Moonraker have worked with Whistler to customize a UK band plan for the scanners! This ensures the radios cover UK bands in the correct steps and the correct mode. When a user performs a service scan, this will search in the correct steps for the selected band ensuring maximum received stations. The radios will receive both amateur and commercial DMR transmissions, because – apart from the frequency – they are fundamentally the same mode. The radio is supplied with the software, and users can select mode when writing memories or select auto, and the receiver will work out the mode itself.

This multi-system adaptive digital trunking scanner supports Motorola P25 Phase I, X2-TDMA, Phase II, and DMR, making it capable of monitoring the following unencrypted channels/systems:
-    Conventional DMR (Entered as a DMR trunked system)
-    Hytera XPT 
-    MotoTRBO™ Capacity Plus 
-    MotoTRBO™ Connect Plus 
-    MotoTRBO™ Linked Cap Plus systems

Key Features and Specifications: 
-    Frequency: 25-54MHz, 108-136.99MHz, 137-174MHz, 216-379.97MHz, 380-512MHz, 764-781MHz, 791-796MHz, 806-960MHz (excluding cellular), 1240-1300MHz
-    Simple Zip Code programming 
-    Preloaded UK MicroSD card included. 
-    Easy updating via the Internet 
-    APCO P25 Digital Phase I & II
-    The removable magnetic head can be operated remotely 
-    Scanning at up to 70 channels/second 
-    CTCSS and DCS sub-audible decoder
-    Dedicated SKYWARN®/Weather button 
-    IF Discriminator Out 
-    User upgradable CPU firmware 
-    Spectrum Sweeper 
-    Tuning Steps: 2.5, 3.125, 5, 6.25, 7.5, 8.33, 10, 12.5, and 25kHz. 
-    Clock / Calendar 
-    Store Favorites Scan List


Ham Radio-Whistler Scanners Tutorial 6 Trunk Tracking P1 - AIRSHOW WORLD

Ham Radio-Ham radio-FT-818ND list of accessories

Ham radio-FT-818ND list of accessories



Ham radio-FT-818ND list of accessories.  I have received a number of emails asking for details of where you can buy accessories for the very popular FT-818ND transceiver by Yaesu. Recently I have joined amazon associates to help bring you to sources of accessories for not only FT-8181ND ham bands transceiver but other popular Ham brands, please consider using my links to amazon for your accessories, I make a little amount of commission which helps keep this website running.

This is an article about:-   The Yaesu FT-818ND  

If you wish to purchase the transceiver you can find it here on amazon:- FT-818ND    using this link allows you to purchase the rig as a bundle. see below whats included.

  • Bundle Includes:
  • Yaesu FT-818 HF/VHF/UHF All-Mode Portable QRP Transceiver
  • LDG Z-817 Automatic Antenna Tuner
  • Ham Guides TM Quick Reference Card


https://johnallsopp.blogspot.com/p/home-page.html

FidgetFidget 2018 DIY Kits 100W SSB Linear HF Power Amplifier for YAESU FT-817 818 kx3 IC-70














Ham radio-FT-818ND list of accessories


Ham Radio-Ham Radio-"BBC to provide free DAB radios to over-70s"

Ham Radio-"BBC to provide free DAB radios to over-70s"

(Source: IBC via Tony Robbins)

https://johnallsopp.blogspot.com/p/home-page.html

Ham Radio-"BBC to provide free DAB radios to over-70s"


  • BBC Radio to provide free DAB radios to over-70s
  • Radios to be given away due to isolation caused by coronavirus
  • Broadcaster partners manufacturers, retailers and charity for giveaway
The broadcaster’s local radio unit will give away free DAB radio units to over-70s nominated by local listeners, as part of the BBC’s Make a Difference campaign.
The project is running across all 39 of the BBC’s local radio stations in England, with partners – including Argos, Currys PC World, John Lewis & Partners, Pure and Roberts Radio – setting aside thousands of radios to give away.
The radios will be distributed by loneliness charity Wavelength, while manufacturer Duracell has agreed to provide batteries for free for the radios.
Tony Hall, the outgoing director-general of the BBC, said: “Local radio is a lifeline at this time and has never been more important as a source of trusted local news and information, and also as a companion for people who are isolating.
”Make A Difference is already having a huge impact right across the country with 28,000 thousand calls in just five days. It is offering support and practical solutions to people who have nowhere else to turn.
“We want everyone who needs access to the radio to have it, that’s why we’re giving away DAB radios. I’m proud we’ve been able to coordinate this initiative with our partners who have been so generous in offering their resources.”[…]


Ham Radio-Ham Radio-some interesting books for the radio ham

Ham Radio-some interesting books for the radio ham


Books on ham radio are essential learning tools listed below are some which I have read over the years and found to be very interesting.






Ham Radio-some interesting books for the radio ham.  Thank you for your continued support for this website, your comments about ham radio, in general, have been interesting many have suggested area's where they would like to see a page or two. The FT-818ND transceiver is a great QRP self-contained lightweight portable transceiver, I get a lot of mail about this transceiver and have written a page about it which you can find here:-


https://johnallsopp.blogspot.com/2020/03/ham-radio-choosing-your-first.html

FT-818ND transceiver from Yaesu, HF VHF, UHF all mode

Ham Radio-some interesting books for the radio ham


Ham Radio-Ham radio-choosing your first transceiver for HF bands

Ham radio-choosing your first transceiver for HF bands


https://johnallsopp.blogspot.com/p/home-page.html

YAESU FT-857D HF VHF UHF all mode transceiver



Ham radio-choosing your first transceiver for HF bands.  Choosing your first transceiver for the ham radio HF spectrum boils down to deciding on what you want to do on the available short-wave allocations, I have listed three possible options to help you decide where to go.

Transceivers come in a number of designs from portable rigs that are self-powered using the internal battery packs, to moble transceiver for those who wish to operate from their car or truck, etc. The last  HF rig category is those who fall into the base station type using an external power supply or having the benefit of working directly from the mains outlet.

If you choose a self-contained HF rig I would consider the:-

FT-818ND from Yaesu,    I have one of these rigs and they work very well giving 6 watts output. Location on HF plays its part I try to get up as high in the hills as possible when running QRP or very near to the sea's edge, salt water is a superb ground plane.

Click here for the FT-818 manual under files.

  A good portable aerial you can use for the Yaesu FT-818 can be found by clicking this link:-


If you intend to use HF mobile there is no better rig than the FT-857D it's one of Yaesu's best products ever, covers all bands all modes very compact if you intend to use it in your mobile, although many use this transceiver as a base station.

This link will take you to page on my website describing the transceiver:-


If you are looking for a base station for your first HF ham radio, look at the FT-450D it's very easy to use rig all band all mode rig which has been used on many DX-peditions.

I have a video describing this transceiver by Bob Allison from the ARRL click below:-


If you are in the United States please consider buying from the trusted Amazon website here:-

Yaesu Original FT-450D HF/50MHz Compact Amateur Base Transceiver - 100 Watts, IF DSP Technology   I make a little on commission which helps this website going.  

Thank you 73 de John G4YDM.



Sunday, 29 March 2020

Ham Radio-Ham Radio-portable aerial for the HF bands

Ham Radio-portable aerial for the HF bands



Ham Radio-portable aerial for the HF bands. Thank you for many in the USA who have kindly commented on many of my pages, I have received a number of requests for information on the buddipole or a similar portable aerial system, a lot of ham radio operators use this portable aerial, this video seems to prove by listening to the commentator that the buddipole differs little from a dipole. I have trawled the internet and come up with a few interesting pieces of equipment which seem to fit the problem many have regarding portable HF operation.

I have seen the MP1DXMAX here in the UK, it may be the ideal aerial assembly for your portable work.

The system comes with a convenient bag and tripod and light enough to be carried up to the top of a hill, an ideal product for SOTA.  Using a similar portable set up I have enjoyed many DX contacts across into the United States from high advantage points throughout the North of England. The Pennine chain is near to where I live, its called the backbone of Britain and offers many high spots operate from.

Your requests have also included links to products for Ham radio use, I have added Amazon to my website, a trusted supplier throughout the British Isles and I am sure many will shop on Amazon in the USA, please consider using the links below for your ham radio purchases.  


Ham Radio-portable aerial for the HF bands




Ham Radio-Yaesu FT 857D: one of the best radio ever




Yaesu FT 857D: one of the best radio ever

Yaesu FT 857D: one of the best radio ever

YAESU FT-857D Transceiver HF, VHF, UHF All mode

Full review here


Download user manual from here

Ham Radio Yaesu FT 857D: one of the best radio ever.   The Yaesu FT 857D was my buddy during several solo-DXpedition around the world.

 I operate a Yaesu FT 857D also during many SOTA holidays, climbing and trekking.


I really think Yaesu FT 857D is the most versatile radio because this ham radio rig is ideal for vacation, camping, field day, living room table, DXpedition, IOTA operation, and DXing.



The FT-857D is the world’s smallest HF/VHF/UHF mobile transceiver, and it is fully equipped with everything you need in your base station and is simply perfect for an ultra-compact package for pedestrian and mobile operation. 

The Yaesu FT 857D has also an external battery pack to work without the comfort of the electrical power.


With one RTX you will cover all your needs

The Yaesu FT 857D will let you operate on HF, 50 MHz, 144 MHz, and 430 MHz Amateur bands. The Yaesu FT-857 receives also on 100 kHz to 56 MHz, 76 to 108 MHz, 118-164 MHz, and 420-470 MHz.
Why I love this radio? Because I can operate almost every ham radio banc while I’m making SWL on public safety services, along with weather networks, AM and FM broadcasts, aviation communications and many others.

Versatile Memory System and easy programming

The Yaesu FT 857D offers up to 200 “Main” memory channels, each one of them you can name as you prefer with an Alpha-Numeric label of up to 8 characters.

DSP is an optional

I suggest buying the DSP for superior interference rejection and transmitter “talk power” for the Yaesu FT 857.
The FT-857’s DSP Unit is produced with a 24-bit high-tech D/A chip for signal processing. Included are Auto-Notch, Bandpass Filter and Noise Reduction filters, along with an equalizer for the microphone.

FT857D has a superb ergonomics

Ease of operation of the FT-857 is enhanced by the large-diameter (1.7”) Main Tuning Dial, similar in size to the tuning knob of many base station rigs. Selectable tuning steps of 2 kHz/4 kHz per revolution allow easy navigation around your favorite bands, while important keys and switches are strategically placed around the front panel for quick access.

My experience with the Yaesu FT 857D: excellent low-cost radio

Well, I am still exploring this little Radio because I’m always discovering some features that I was not using. I’m a DX-ER there was a time where I had UHF and VHF. Now, I’m getting older and I think that a radio able to everything is a must for every complete operator and beginner.

 I said for the novice because with less than 1.000$ the beginner will have all the main possibilities of the hobby at his disposal. So it especially indicated as a budget radio for young operators that can expand their knowledge from QTH Dxeinf operation to field days to SOTA…

I worked  300 countries with this tiny radio. Today I’m going to fit it into a car using an ATLAS 125 as an antenna but every time I’m going to prepare all the setting I leave it in the shack. I just love this small Yaesu FT 857D.

                                                                              Full review here



Yaesu FT 857D: one of the best radio ever

Home page

Ham Radio-Ham Radio-books for the keen radio amateur

Ham Radio-books for the keen radio amateur

https://johnallsopp.blogspot.com/p/home-page.html

Yaesu FT-1000D Ham Radio Transceiver.




Ham Radio-books for the keen radio amateur.  Thank you for your comments about Ham radio pages on my website, they are there to help and educate you in electronics and the world of ham radio. I have recently joined with Amazon to bring you the convenience of shopping directly from this website, please consider using the links for your purchase, I make a little amount of commission from your orders. 

Thank you, John G4YDM 



This is the book you need if starting off in Ham radio Foundation Licence Manual: for Radio Amateurs

Foundation Licence Now   Another excellent publication for the newcomer to ham radio
















Many of these Ham radio titles may be from a few years ago nevertheless they still contain a lot of Ham radio information including the fundamental aspects of radio communications including operating procedures, aerial building, and formulas you will need to help you understand the fascination g world of ham radio.

Ham Radio-books for the keen radio amateur


Click here for a number Ham Radio Pages







Saturday, 28 March 2020

Ham Radio-Ham Radio-Yaesu FT-450D Walkthrough a very good piece of equipment

Ham Radio-Yaesu FT-450D Walkthrough a very good piece of equipment
A great review by Bob Allison ARRL












Source:- Yaesu FT-450D: honest review and user manual


Ham Radio-Yaesu FT-450D Walkthrough a very good piece of equipment.   Yaesu Ft-450D is a super-compact HF & 6 meters transceiver able to fulfill all your portable needs.

Dxing and even DXpedition are the most popular part of operating on HF and looking for affordable radios, the Yaesu FT-450D is a really interesting choice.

It could be the case, for may reason to avoid purchasing as a low-cost radio a Chinese Transceiver. 
They work pretty well, for example, the XIEGU X-108G is excellent but the supplier is ofter poorly reliable.           And as a first radio, it could be better to opt for a well-known brand.

  • FM-USB-LSB-AM-CW, 100 Watts of Transmit output on 6-160M Amateur Radio.
  • Receives 30Khz to 54Mhz continuous including All Shortwave & AM broadcast.
  • Built-In Automatic Antenna tuner, CTCSS, 500 & 300 Hz CW Filters.
  • Fast 400 MHz IF DSP (Digital Signal Processing) technology.


Review of Yaesu FT450D

yaesu FT-450D antenna tunerTo review the Yaesu FT-450D, I have to say that I have been using this RTX daily for less than one year and I said is worth the value for its performances.
I have to said that Yaesu Ft-450D is an ultra-compact HF & 6 meters transceiver able to fulfill all your portable needs.
Dxing and even DXpedition are the most popular part of operating on HF and looking for affordable radios, the Yaesu FT-450D is a really interesting choice.
I have had nothing but good reports about the Yaesu FT-450D sound quality and my signals on SSB, AM and digital were very good.
Even 50 MHz FM had the same good reports.



Ham Radio-Yaesu FT-450D Walkthrough a very good piece of equipment


Thank you to all in the USA who have kindly supported my website with constructive suggestions and very complimentary comments about my artwork-Thanks & 73 de John G4YDM




Ham Radio-Ham Radio-FT-818 accessories for this popular QRP transceiver

Ham Radio-FT-818 accessories for this popular QRP transceiver


https://johnallsopp.blogspot.com/p/home-page.html

Ham radio QRP Transceiver FT-818 (Used)

Operating Manual


A review of the FT-818ND



I use this a lot as an avid Ham radio QRP operator, it's a lightweight compact and very versatile ideal 

rig for portable operation, including SOTA operation.

I have listed below a number of popular accessories for the Yaesu FT-818 Transceiver.









Zinniaya DIY kits 100W SSB linear HF Power Amplifier For YAESU FT-817 818 kx3 IC-70 Power Amplifier Module Board

Click the links below for information on a great HF portable aerial for the ham Radio-bands, there's also a review on the FT-857D a very versatile compact all band all mode Ham Band transceiver. I have listed a review of the Yaesu FT-450D transceiver, a great performer for newly licensed or experienced Radio ham.
Collection of  Ham Radio books



MP1DXMAX an ideal portable aerial for the Yaesu FT-818




Ham Radio-FT-818 accessories for this popular QRP transceiver




Ham Radio-Ham Radio-Multiband End-fed 80-10m antenna

Ham Radio-Multiband End-fed 80-10m antenna



Trawling the internet I found this interesting article for a multi-band aerial from VK3IL, I am indebted to him for supplying this article!

Ham Radio-Multiband End-fed 80-10m antenna



I’ve been generally happy with the performance of my 5 bands trapped EFHW antenna and have used it on many SOTA activations. However, every time I use it, I have to be quite careful not to break any of the joints to traps or get the traps snagged in trees, etc. Consequently, I’ve been looking around for a simpler antenna that will still achieve multi-band coverage. 
I came across the following antenna which covers the 80-10m bands with no traps and just one loading coil. It is called EFHW-8010. It is simply a half-wave end-fed on 80m which will resonate on all multiples of that frequency, loaded with a small inductance near the feed end. This inductance has the effect of bringing the resonances a bit lower, particularly on the higher bands and thus improving the match.
The commercially available version of this antenna is intended for permanent installation and is way too large and heavy for portable ops. So I decided to model it using 4nec2 and re-design it optimized for portable use. The NEC2 model is in the appendix for anyone who would like to play with it further.
To see the effect of the coil, here are two modeled versions of the same length and same configuration (low inverted-V), the first without any coil and the second with a 4.5uH coil 2m from the feed point: