Tag Archives: Bill Hemphill (WD9EQD)

Bill discovers a number of Tecsun S-8800 Hidden Features

Many thanks to SWLing Post contributor, Bill (WD9EQD), who writes:

I’ve owned a Tecsun S-8800 for about eight months and have come to enjoy it more all the time. It, along with my PL-880, have become my main work horses for shortwave listening.

The S-8800 is perfect on the desk connected to a wire antenna and the PL-880 is perfect for carrying around.

Since I knew of the hidden features of the PL-880, it got me thinking on whether the S-8800 had any hidden features.

A quick Google search turned up the following Web Page:

http://swli-05940-mi.blogspot.com/2017/03/tecsun-s-8800-hidden-features.html

I used Google Translate to get a rough translation and then spent some time testing the features out and also just pressing and holding buttons to see if anything else showed up.

Following is what I have come up with:

(Note: some of these are in the manual)

With the radio off

Toggle Longwave on/off: With the Radio OFF, Press & Hold 2

Toggle backlight permanently on/off: With the Radio OFF, Press & Hold 3  – Note that this means the light will be on even when radio is off. While the light does go out when radio is turned off, any operation of a control will turn the backlight on and it will then stay on. Too bad they just didn’t install a slide on/off switch. Plus I know of no way to turn the backlight on permanently without the remote.

Toggle Seconds display on/off: With the Radio OFF,  Press & Hold 8

Displays “0888”: Maybe this is version?: With the Radio OFF,  Press & Hold “Back”

Displays all segments of display: With the Radio OFF, Press & Hold “AM NORM” – Displays all segments of display. Press & Hold again to display “H802”

With the radio on in FM mode

Displays “75US”: With the radio ON, Press & Hold 5

Squelch Setting: With the radio ON, Press & Hold 9 – Range 0-5. Use Tuning Knob to set. Press 9 again to set.

With the radio on in SW/AM mode

Toggles Extended functions on/off: With the radio ON, Press & Hold 4

With extended functions on:

Press & Hold 6 – Toggles DNR (Dynamic Noise Reduction) on/off.

Press & Hold 9 – Squelch Setting. Use Tunng Know to Set. Press 9 again to set.

Squelch ranges:

MW: 0-40

MW with USB/LSB: 0-30

SW: 0-25

SW with USB/LSB: 0-30

So far that’s all I’ve been able to find. Has anyone else found any others?

Post readers: please comment if you’ve discovered other hidden features on the Tecsun S-8800! I’ll compile a complete list and post it separately.

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Bill tweaks his AM loop antenna for optimal mediumwave performance

Many thanks to SWLing Post contributor, Bill Hemphill (WD9EQD), who writes with the following update to his previous post:

As you may remember, back in May, I picked up a beautiful home-made loop antenna. It was 25 inches on a side with 23 turns of wire. My initial testing showed that it would tune from 280 kHz to 880 kHz. While I was familiar with loop antennas, I had never tried using one.

My initial tests were disappointing. So I spent some time on the internet reviewing AM loop antenna designs. I came across a reference to an AM Loop Antenna Calculator by Bruce Carter:

http://www.earmark.net/gesr/loop/umr_emc_calc.htm

I first measured the tuning capacitor and found that it tuned from 25 to 400 pF. Entering the data into the calculator:

This matches closely to what I was experiencing.

I then proceeded to calculate various Number of Turns to see the effect on tuning range. My goal was to tune the entire AM broadcast band.

I settled on ten turns which gives the following from the calculator:

Perfect. I removed 13 turns (which left ten turns) and then added a two turn secondary loop which would be connected to the radio. The results were fantastic.

I have created three short videos showing the difference between using the Tecsun S-8800 without the loop on a weak station and then using it with the loop.

[Note: If you’re viewing this post via our email newsletter you might need to view this post via a web browser to see the following embedded videos.]

Without the loop

With Loop

As you can hear, a very noticeable difference.

[After making these videos] I tested the of reception of 1510 kHz on the Panasonic RF-2200:

The results are amazing.

I have logged three stations on one frequency. Just peak the one station, then tune the loop and peak the second, then turn the loop some more and peak a third station.

I’m having a lot of fun with the loop. When it gets a little cooler, I plan to take it to the park where there is zero noise and really put it through its paces.

Excellent job, Bill! You’ve proven that doing a little research and making small adjustments to an antenna design can yield impressive results! Thank you for sharing!

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Shortwave station WTWW promotes Field Day on the air

Many thanks to SWLing Post contributor, Bill (WD9EQD), who writes:

Shortwave Station WTWW is promoting Field Day with a special shortwave broadcast. From their Web Page:

http://wtww.us/

Call in toll free at:

833-390-5085

Promote The Ham Radio Hobby To The Entire World On A Powerful International Shortwave Radio Station – WTWW BY Calling In From Your Field Location and Tell The World about it. Put the members of your Field Day group on the air by passing the phone around. Include special guests and your local city officials. Let’s catch the excitement from the young kids and teens that are visiting your Field Day site. Let’s talk to prospective Hams that have gotten excited by watching your field day activities.

If you can’t get through on the first try to this number – you can leave a message and we WILL call you during the live show. You are welcome to leave a message by calling ahead of time as well!

Let’s give the world a shout from Field Day 2018!

Thank you, Bill and a number of other SWLing Post readers who shared this tip!

 

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Bill scores a homebrew LW/MW magnetic loop antenna

Many thanks to SWLing Post contributor, Bill Hemphill (WD9EQD) who shares the following:

I went to the Warminster Amateur Radio Club (WARC) hamfest [yesterday] in Bucks County, PA. For some time, I have been thinking about making a loop antenna for AM DXing. It was my lucky day. When I walked to the inside tables, on the very first table was this homemade loop antenna gentleman was selling from an estate.

I snatched it up for $40.

Attached are some photos of it. It’s 25” by 25”, with a swivel base. There are 23 turns of wire and I have no idea what size the capacitor is. I did some preliminary tests and it tunes from 280 kHz to 880 kHz. So it’s the covers the high half of the long wave band and the low half of the AM band.

It’s very well made and I fugue I can modify it to cover the entire AM band.

[…]I hooked the SDRplay RSP2 to it and was getting good signals of major stations all the way to 15 mHz.

That’s with it sitting on my dining room table. Of course the capacitor wouldn’t peak the signals.

So it was a great day at the hamfest!

Indeed that was a great find, Bill!  Someone spent a decent amount of time building that furniture-grade loop support. Indeed, it’s very reminiscent of 1920s-30s mediumwave loops!

What I love about your loop (and that of Thomas Cholakov) is that one can see how simple these antennas actually are to build. The only complicated bit is the support, but even that’s simple if you use the shield of a heavy coax or flexible copper tubing.

Thanks for sharing and enjoy logging DX with your new-to-you loop!

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Shortwave Radio Recordings: Ham radio contacts between W2PVF (SK) and two Antarctic Stations, circa 1974

Palmer Station (Photo Credit: Ryan Wallace and the USAP)

Many thanks to Bill Hemphill (WD9EQD) who is one of our newest contributors at the Shortwave Radio Audio Archive (SRAA). Bill approached me at the Winter SWL Fest this year noting that he has a wide variety of radio-related audio recordings to share with the SRAA and the SWLing Post.

This week, Bill shared two fascinating tape recordings he originally acquired from an estate sale box.  These recordings were originally made in 1974 by the late Jim Hayward (W2PVF) in Absecon, New Jersey (USA) with two different ham radio stations in Antarctica.

This first recording is between W2PVF and KC4AAC of Palmer Station. The audio starts mid conversation:

Click here to download.

The second recording is between W2PVF and LU1ZE of the Argentine Antarctica Station. The operator at the microphone is W1PV. The recording even includes a phone patch:

Click here to download.

Bill, thanks so much for sharing these recordings–I thoroughly enjoyed them!

I’m so impressed with the audio and signal quality of the Antarctic stations.  In 1974, we were approaching a solar minimum in Solar Cycle 20. Still, I bet conditions were better than anything we’ve seen in over a decade!

I’m curious if any Post readers have ever made contact with either of these stations or even know the operators in the recordings? Bill notes that  Jim (W2PVF) was president of the local Atlantic City Electric Company for many years. Would be fun to share these recordings with the some of the original operators, if they’re around!

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