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Re: CROSS COUNTRY WIRELESS

Chris Moulding
 

Hi Pat,

I think you are referring to the APRS Messenger program. Cross Country Wireless is the company name.

As it's not possible to develop the program on any Windows version later than XP I cannot check that the program is secure or works with later Microsoft updates on later versions of Windows.

The safest option for everyone was to abandon the program.

Regards,

Chris


CROSS COUNTRY WIRELESS

pat obrien <2wr796@...>
 

I know CROSS COUNTRY has been removed because 
of windows  10.

I still have like many windows 7, would be nice to have it up for windows 7 which it did work great.

Just a suggestion.

POB/K8LEN


Re: VLF to HF Active Antenna LED Status and Troubleshooting Possible Lack of Gain Fault

Chris Moulding
 

Hi Robert,

On the base units for our original active antennas the green LED indicated power on as the green LED and 1k series resistor were connected across the incoming DC supply after the common mode choke filter.

The red LED gave an indication of current flow to the antenna as it was connected with a 1 k series resistor across the 10, 22, 47 or 100 ohm current limiting resistor (depending on antenna version) in the output to the antenna.

In normal use the red LED glows faintly due to the voltage drop across the current limiting resistor, it lights brightly if there is a short circuit on the antenna or coax cable.

A quick check of the base unit can be made by checking the voltage on the antenna port with a meter (it should be close to the input voltage with no current drawn).

If you short out the antenna connector then the red LED should light brightly.

With the transparent lid removed you can also check the voltage going to the antenna. This should be around 9 to 10 V with 12 V applied to the power socket.

If the red LED is working and the green LED isn't it's possible that the green LED is faulty. I recall that we have had two go faulty on customer units in the past.

Regards,

Chris


VLF to HF Active Antenna LED Status and Troubleshooting Possible Lack of Gain Fault

Robert, VA3ROM
 

Hi Chris,

The red LED is a power indicator and I have 12 VDC going up to the antenna but the green LED is off and I've noticed that I've lost about 3 S units of signal gain on my WSPR decodes and VLF so what's does the lack of green LED indicate. Obviously, I have some kind of problem with the noticeable drop in WSPR decodes as compared to my other receiving antennas and receivers for side-by-side comparisons. There's no published schematic so I have no idea of where to start the trouble shooting process.

73,
Robert


Re: CCW Multicoupler for use with a transceiver?

ea6amm@...
 

Hi, Chris, and many thanks for the information!

This project looks wonderful and will be the perfect solution for my station, and I think that many other will be interested in it!
I look forward to seeing it appear at the CCW shop to purchase it :-)

Regards,

Gaspar


Re: CCW Multicoupler for use with a transceiver?

Chris Moulding
 

Due to the Covid-19 lockdown we have not had full access to the workshop so all the products that take a lot of workshop assembly are on hold for now.

The same goes for possible new products such as the Multicoupler for transceiver use.

I've been testing the prototype for some time including HF CW and SSB contest use and it works really well.

To explain how it works, it has a SO239 antenna input with five outputs, four being BNC female for additional receivers. A SO239 output is fed via a TR relay to a transceiver. On receive all five outputs are fed simultaneously as a multicoupler from the antenna input. On transmit the TR relay switches the multicoupler out of circuit and give a direct connection between the transceiver and antenna socket.
It uses fast acting RF switching which will work down to QRP levels. The frequency range is HF to 2m.

It needs a PCB board design to be completed and it could be manufactured in batches when the lockdown eases up.

There is also demand for the Broadband Active Antenna and VLF/LF/HF Active Vertical Antenna and batches of those will be built first.

Regards,

Chris


CCW Multicoupler for use with a transceiver?

ea6amm@...
 

Hi, Chris,

I'm Gaspar, EA6AMM, a happy costumer (CCW HF Active Loop ANT).

Some time ago I read about a project you were working on about a version of the CCW multicoupler that would be able to be used with a transceiver: https://www.facebook.com/photo.php?fbid=10222437342791909&set=p.10222437342791909&type=3

I would like to know if you keep on working in this project and if there are news about it!

I will be glad to puurchase one as soon as it hits the shop! :-)

73, Gaspar

EAAMM


A Check in

Kev Haworth
 
Edited

Evening folks.
I've not checked in for a while as I've been playing radio from the car with my new IC7300.

However,  Home is a noisy suburb of Liverpool/Bootle UK and I've been experimenting with a QRM eliminator which has enhanced the excellent LAA+.

I'm sat listening to many Stateside stations on 80m SSB at the moment who are working EU and beyond, the EU stuff is easy, however, I do hear the DX occasionally, remarkable for such an inexpensive product.

A new 5 band vertical has been made with a Spiderbeam 12M HD and this will be used on a local beach very soon.

The biggest thing of late is the ability to null out noise with the LAA+, it has helped me immensely, I'll post a video over the next couple of weeks.

Best to all.

Kev

M0TNX


New loop amp under development

Tom Crosbie G6PZZ
 

Hi Chris
You mentioned a little while ago that you were developing a new higher performance loop amplifier.
I was wondering how close this was to production and if you had an idea of pricing yet.
Keep up the good work!
Cheers
Tom G6PZZ


Re: Ccw cardioid loop..update from a user of..

Chris Moulding
 

Thanks for sharing that, Simon.

I did wonder how you isolated the cable feeding the relay shorting the resistor so that explains it.

It certainly sounds like it doesn't affect the antenna pattern.

Regards,

Chris


Re: Ccw cardioid loop..update from a user of..

Simon
 

Hi

First no have not tried the shared apex loop..lack of space in the direction i would want to face it..

Re the switching of the cardioid loop

Cat5 controlled.no coax.
Cat5 has common mode choke at preamp end.all control lines grounded to earth stake via 100nf at common mode choke.
Relay 1 switches the earth from one side of loop to the other..gnd switched.
Relay 2 switches the gnd on/off.again gnd switched.
Relay 3 activities with relay 2.it is mounted in separate box at resistor.it bypasses resistor( or not, depending upon normal loop or cardioid.) wiring to relay 3 is also cat5 with 100uh and 100nf at each end ( preamp and resistor.)

Using 9:1 matching transformer at loop to preamp.

This i may also make switchable in/ out..BUT so far it does not seem to upset normal loop operation leaving it in, so may just leave it.

Yet to fully test on 160m and mw..was having too much fun using it on 80m dx last night and ran out of time.(besides best dx on 160 seems to be gray line at moment, and was far too late for that.)

On 80m made all the difference between hearing N/A over the noise or not..


Re: Ccw cardioid loop..update from a user of..

Chris Moulding
 

Good to hear that after all your work you've found the optimum cardioid loop setup for your location.

Regarding the switching arrangements I can see that you can easily change the antenna direction by swapping the ground connection from one amplifier terminal to the other.

To go back to simple loop configuration have you just disconnected the ground completely and use the loop with it's termination resistor?

Regards,

Chris


Re: Ccw cardioid loop..update from a user of..

Oyster Town (G0IFS)
 

Hello Simon,
Interesting results. Oddly enough i am just off down the garden to arrange switching of the cardioid loop in a similar way. Comparing cardioid loop with 400ft loop on ground it just has the edge-----most of the time. So log will be rolled up this morning and the relays used to compare aerials will be switching direction and from cardioid to normal.
Question---have you tried shared apex loops?


Re: Ccw cardioid loop..update from a user of..

Simon
 

Hi there..hope you all well??!

update continued.

well..i have been using 2 cardioid 2 m loops ( cat5 feed) with remote direction switching..nw or se.
they were broadside 14m apart.

after much experimenting i have come to the conclusion that the combined noise of both preamps ( both loops phased  together, identical lengths of cat 5 etc) added to the background noise they amplify was GREATER than the extra “ gain” one had in having 2 loops..
ie better sn on single loop than on 2.

so a reworking..

now have one cardioid loop nw or se switching and another ne or sw switching.ALSO they switch from cardioid to “ normal” loops remotely..ie from shack i can go nw, ne, se and sw. OR switch them to normal loops with ne and sw or nw and se.
this i did today. 

testing on 80m...working k2rr vy2 etc on 3790..
on my big mag loop they were hard to hear..noise floor was s7.. they s8 ( they giving me s9 plus!..i guess they running beverages etc.)

on normal loop setting about the same sn but weaker.
on cardioid loop setting....
se ..gone..nothing.
nw ..s7-8 noise s3
sw..s4  noise s3
ne ..s4..noise s4

so..works a treat..out preforming my big mag loop on rx..

similar on 160m aiming at locsl smpsu noise..

beginning to really like the cardioid loops now ironing out any teething issues i had..Very usefull to have a lowish angle of takeoff switchable direction low band rx antenna..

mag loop simon g0zen 


Re: Broadband Active Antenna...200 kHz to 1400 MHz

chasb441 <chasb441@...>
 

Can you add me to the list, please Chris?


Re: Broadband Active Antenna...200 kHz to 1400 MHz

Chris Moulding
 

The plan is to restart production of the Broadband Active Antenna as soon as Covid-19 lockdown ends in the UK.

I've redesigned it so that it will work directly from the bias tee on a SDRPlay receiver.

I'm keeping an email waiting list so when the first batch is ready I''ll send emails out before a general release.

Regards,

Chris


Broadband Active Antenna...200 kHz to 1400 MHz

Geoff
 

Chris. Not sure when you plan on re-starting production, but are you taking advance orders or is there a waiting list in readiness for when you resume?


Re: VLF LAA+ or Hi Z AA.

Chris Moulding
 

Hi Vince,

The choice of antenna really depends on your noise situation.

Any antenna will receive wanted signals, in your case you want to reduce the noise so that you can hear them.

If you have noise coming from one defined source then a loop antenna using the VLF Loop Antenna Amplifier will be a good option as you can use one of the two sharp nulls of the loop to null out the noise source.

If the noise is coming from a wider source like VDSL data over telephone lines then another option would be to make a cardioid loop using the Beverage Antenna Amplifier. This gives a wide 90 degree plus angle off the back of the antenna that could be used to reduce noise.

The High Z Active Antenna Amplifier and the VLF/LF/HF Active Vertical antenna make omni-directional vertical antennas that can give incredible results in very quiet rural or beach locations. Unfortunately they would be swamped by the noise at your location.

Another alternative would be to try a vertical antenna with loop counterpoises like the one I wrote about in my RadCom article of October 2020.I'm still using a version of this for transmit and receive at home as it reduces the very local noise from neighbouring houses. My current version uses a 10m high wire rather than the more complicated G7FEK vertical I used for the article. We can supply the HF Antenna Isolator as a transformer for the loop counterpoise antenna.

The link to the article is: http://www.crosscountrywireless.net/202010 loop counterpoises.pdf

Regards,

Chris


Interesting YouTube video on the Loop Antenna Amplifier + by James Day M0GQC

Chris Moulding
 

There is an interesting YouTube video comparing a loop antenna made using the Loop Antenna Amplifier + with a end fed half wave inverted V for 80m.

It's made and presented by James Day M0GQC who is producing YouTube videos on a range of amateur radio topics.

The link to the video is: https://youtu.be/zHf4fyUPxto

Regards,

Chris


Re: Question about order

Darren Hennig
 

Thanks Chris! Have a great weekend and work safe!

 

From: Chris Moulding
Sent: March 11, 2021 13:08
To: CrossCountryWireless@groups.io
Subject: Re: [CrossCountryWireless] Question about order

 

Hi Daniel,

Due to the Covid-19 lockdown we take a bag of parcels to the Post Office and collect the tracking numbers a few days later when we take another batch.

Your order was shipped earlier this week and I should email your tracking number tomorrow when the next bag of parcels is ready to ship.

Regards,

Chris

 

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