Degen DE17: First look and operations

My new Degen DE17 waltzed in the door today. This is a digital DSP radio. Like other eBay digital wonders, this one comes with only a Chinese-language instruction manual ;( and some things aren’t obvious. Most of the operating instructions from the Degen DE15 are applicable here, although some buttons are different.

The DE17 is an AM/FM Stereo/Shortwave receiver. It runs from 2 AA batteries and has a short whip antenna. Its front panel is brushed aluminum with a black plastic case (it reminds me so very much of those old Radio Shack project boxes I used as a kid). Pressing any of the buttons activates the bright orange display backlight for a few seconds.

Degen DE17

Setup

These are the user-settable options (all set with the radio turned OFF).

  1. AM step 9/10 kHz: Press and hold the M- (battery icon) button for about 5 seconds. When A09 or A10 appears, release the button and that will be the step value. Repeat the procedure to set it to the other value.
  2. FM tuning range: Press and hold the FM/MW button for about 5 seconds. When 64 or 87 appears, release the button and that will set the bottom value for the FM tuning range at 64 or 87 mhz. Repeat the procedure to set it to the other value.
  3. 12/24 hour clock: Press and hold the M+ (TIME) button for about 5 seconds and H12 or H24 will appear on the display for 12-hour or 24-hour timekeeping. Repeat the procedure to set it to the other value.
  4. Sleep timer: To set the sleep timer value press the + or – button briefly. Continue to press to advance through the values 5, 10, 20, … 90. One press past 90 disables the sleep timer.

There is a small hole in the back cover giving access to a master RESET switch.

Clock/Alarm setting

  1. Time set: With the radio off, press the M+ (TIME) button briefly. The hour value in the display will flash. Use the +/- keys to raise and lower the hour setting. Press M+ (TIME) again to set the minutes. Press M+ (TIME)  a third time to complete the process.
  2. Alarm set: With the radio off, press the M (% SET) button briefly The hour value in the display will flash. Use the +/- keys to raise and lower the hour setting. Press M (% SET) again to set the minutes. Press M (% SET) a third time to complete the process.
  3. Alarm on/off: Press SW (% OFF) to turn the alarm on and off. (For the DE15 the speaker mute button toggles the alarm.)

Power and antenna

At the top of the radio there is a hold switch that disables the buttons on the radio. To turn the radio on, first make sure that the hold switch is in the to the left (looking from the front of the radio). When the hold switch is in the HOLD position a key icon appears in the display. Then press the POWER button to turn the radio on or off. The volume control knob is on the top side too. There is one other switch on the top, labeled with an antenna symbol. I presume that the left position uses the whip antenna and the right position uses the earphone cord as an antenna.

Battery strength is indicated on the display. The unit can also be powered an external 5-volt source and my unit included a USB cable for this purpose. When powered externally an electrical plug icon appears in the display. The unit can charge rechargeable batteries using an “intelligent charge function.” When rechargeable batteries are installed and the unit is hooked to a charger with the power off, pressing the M- (Battery icon) starts the charging cycle.

Tuning

To toggle between AM (MW) and FM radio, press the MW/FM button. For Shortwave, press the SW button. Repeatedly pressing the SW button will select a pre-set frequency from the following: 6 MHz, 7.3 MHz, 9.5 MHz, 11.7 MHz, 13.5 MHz, 15.2 MHz and 18.2 MHz. Tuning is accomplished with the +/- buttons. Press and hold the tuning buttons to scan for the next available station. While tuning the radio a signal strength number will appear in the display, lower right, for a few seconds, after which this will be replaced by the time.

Frequency coverage

FM 87.0 – 108 MHz
64 – 108 MHz
MW 522 – 1710 kHz
SW 2.3 – 23 MHz

Memories

This radio supports ATS, automatic location and storage of stations. To operate the ATS mode, with the radio on, select MW, FM or Shortwave, then press and hold the M button until the display indicates that the radio is scanning frequencies. After the radio scans the band, strong stations are stored in memory. Press the M+ or M- buttons to scroll through the stored stations to listen to them. Scanning the Shortwave frequencies takes several minutes.

Stations may be saved in memory manually. Tune the desired station, briefly press M and and then within 5 seconds press M+ or M- to scroll through the available memories (hold the button down to scroll rapidly). The memory number appears in the display followed by “E” for an empty location or “E C” for an occupied location. Once the desired memory location is found, press M again to store the current station frequency in the memory. There are 100 memories for FM and Shortwave, and 25 for MW.

To delete a station from memory, select the band and use the M+/M- keys to find the memory location you want to clear. Press and hold M- for a couple of seconds until the letter “d” appears next to the location number in the display. Press M- a second time to delete the entry.

Performance

The first question is how it sounds. The tiny speaker provided a tinny sound that was not as pleasant as one would want—no surprise there. With a good set of headphones the sound was pleasing, but with a decidedly weak bass response. FM sensitivity was very good, as expected. MW didn’t suck as expected and it’s very nullable, but in no way compares to a larger portable like the Grundig G4000A. I picked up a few daytime shortwave stations, but I didn’t spend much time on this yet.

Observations

After thinking about it, this radio looks like an economy version of the Degen DE15. The basic functions are the same, but the case feels cheaper, and there are fewer buttons. The DE15 lacks the antenna selector switch. The DE15 has a digital volume control and the DE17 an analog control. Both recharge internal batteries, the DE15 with a standard mini USB cable and the DE17 with a round 4.5 mm plug. The DE15 also came with a carry bag. The DE15 uses 3 AAA batteries and the DE17 uses 2 AA. I think I would pay the extra $9 for the DE15 just because it feels so much more solid, the button labels are easier to read, the display is bigger, it includes rechargeable batteries and has an English-language manual.

In the Box

My unit came with the radio, ear buds, carry strap, USB charging cable and Chinese-language documentation. I paid $29.99 including shipping on eBay.

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Осень

It’s that magical time of the year when the weather turns cool. The oppressive heat and humidity of a South Carolina summer races from experience to remote memory.

I never learned enough of the Russian language in College to actually read literature, but I did come across Pushkin’s poem, Осень (Autumn) in English translation and it was so very true to life. Autumn is the very best season. A brief excerpt:

Every autumn I blossom anew; the Russian cold is good for my health; once more I relish the everyday habits of life. Sleep comes at its proper time, and so does hunger; my heart beats lightly and joyfully, desires seethe, and once again I am happy, young, and full of life—such is my organism (if you will, please, excuse this unnecessarily prosaic term).

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Entitlement

In case you’ve been off planet today and haven’t seen Today’s Mitt Romney video, take a minute and watch it.

 

Mitt Romney is speaking about 47% of Americans who he thinks believe that they are entitled to a handout from the government.

However, Mitt Romney is the one who really believes that he is entitled to a handout, a huge discount on his investment income and tax loopholes. What could Romney have done himself to have actually earned his half-a-billion dollar net worth? Did he create something of value to the world? No, he just figured a smart way to move money from some people’s livelihood to other people’s pockets, and keep big chunk for himself.

When I was in business I got to know some folks who made a lot of money, not on Romney’s scale, but millions. They felt a sense of entitlement, not because of what they could do, but because of their position. They felt this not only about themselves, but about people like themselves. They simply felt that they deserved big salaries, bonuses, first class everything and perks, even while they were laying off workers because profits were not high enough. I don’t think that these are evil people, but the saying that “power corrupts” is true. One has to rationalize the essential unfairness of the system, and that is most easily done by believing in ones’ own entitlement.

Romney is a face on a spreadsheet. I have nothing against spreadsheets and scientific management; however, I have a problem with there is one spreadsheet for the privileged and one for the working guy.

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Charter Communications: monumental stupidity

It is not illegal for Charter Communications to telemarket its existing customers who are on the National Do Not Call Registry, but to do so is monumentally stupid. People put their names on the Registry for a reason – they don’t want telemarketing calls.

I have a policy: If I am not your customer and you telemarket me, I will never be your customer, ever. Calling someone on the Do Not Call registry who is not your customer is a crime, and I don’t do business with criminal enterprises. If I am your customer and you telemarket me, you get one warning. If you call me again, I’m no longer your customer because calling me is an invasion of my privacy and my only legal protection is to make myself no longer your customer. Also, if you are in my state, I will file a complaint with the state Consumer Affairs agency who handles complaints under state law. I will also likely write nasty letters to lots of people in the management of your company complaining about how stupid you are.

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Mitt v Mitt video

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Romney’s Michael Dukakis moment

Dukakis:

image

Romney:

image

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Radio anticipation

I ordered a Tecsun R9702 radio a week or so ago and I’m anxiously awaiting its delivery. I have over 100 radios, most of them shortwave models, but none has a particular feature set that I’m interested in:

  • Dual conversion
  • Analog tuning
  • Digital frequency readout

Why these features? Dual conversion usually means improved selectivity (rejection of adjacent stations) and freedom from images (stations appearing where they don’t belong). Digital readout lets one precisely tune the radio and know the exact frequency of a found station. Analog tuning is just something I like, continuously variable and not in discrete steps.

It seems that higher-end radios have dual conversion and digital frequency readout, but synthesized digital tuning (like the Tecsun PL-660). Less expensive radios like the Grundig G1100 have analog tuning and digital readout, but are not dual conversion. Some older models have dual conversion and analog tuning, but no digital frequency display.

Finally, after quite a bit of searching I came upon the Tecsun R9702 that has all three. I had to consult several sources to verify the radio met my criteria. The R9702 I ordered has (based on product photos) Chinese labeling; however, a manual in English is on the Internet. It’s a pretty simple radio anyway with just 10 buttons: 4 for selecting the band, 4 setting the time and alarm, the display light button and the off-on button. Add volume control and tuning knobs.

Based on the specifications, this radio should do well on AM, but not world class on FM and Shortwave. Its shortwave sensitivity is 30 µV compared to 20 µV on the Tecsun PL-660 and their DSP models. FM sensitivity is particularly weak at 10 µV compared to 3 µV on my good FM radios. I have plenty of FM radios, so that’s not an issue for me.

I’ve had fairly good luck with Tecsun radios except one DR-920 where the internal earphone switch went bad leaving the speaker inoperable.

The radio finally arrived and I’ll share some first impressions.

It comes with plush carry bag, a manual in Chinese, ear buds and a clip-on external antenna. Mine is the black model. The screened labels on the radio are in Chinese, but the molded labels (Volume, Tuning, DC 3v) are in English as is the simple LCD display.

IMG_0457

My first impression was that the radio was a bare-bones model of less than the best quality. I based that primarily on the time set buttons that were flimsy and slightly crooked. The tuning knob is very stiff and the push buttons in general were stiff, hard to press and made a clacking noise. The dial light, illuminating from one side, was weak and uneven.

Cosmetics and ergonomics aside, the radio performed well on all bands. I’ll do more side-by-side tests, but it held up well against my Tecsun PL-380 DSP radio. One downside is that the frequency display is only 4 digits, so you cannot resolve an odd-numbered shortwave frequency, such as 11.975. Another annoyance is that the radio always turns on set to the FM band, no matter where it was set when the radio was turned off, so if you were listening to AM, the next time you turn on the radio you may be greeted to the hiss of an unused FM channel. Drift is a significant problem — I had to retune the radio every few minutes.

On a positive note, the internal speaker sounded crisper than the Tecsun PL380.

Model Tecsun R9702
Frequency coverage (numbers are the published ones. My radio tunes outside these values.) FM 87 – 108 MHz
AM 525 – 1610 KHz
SW1 5.95 – 9.90 MHz
SW2 11.6 – 17.9 MHz
FM Stereo No
Memories n/a
Sensitivity FM 10 μV
AM 1 mV/m
SW 30 μV
Selectivity >= 20 dB
SSB No
Technology Analog Dual Conversion
Battery 2 AA
External DC 3v Center (-)
External antenna jack No
Tuning Analog
Tuning step Continuous
Display Digital
Volume Analog
Signal strength indicator No
Whip antenna length 19”
Local/Distance switch No
Bandwidth switch Yes
Tone control No
Dial light Yes
Clock Time, Alarm
On/off Button
Control lock No
Stereo/mono switch No
Attached battery door No
Size 117 x 77 x 30 mm
Weight without batteries 180 g
Carrying Wrist strap
Accessories included Ear buds, external antenna, pouch
Price (including shipping) $33.39 from DinoDirect
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