Two Inexpensive AM/FM Portables: Sony ICF-38, Tecsun CR-1100

Sony ICF-38 (left) – CC Radio-EP (center) – Tecsun CR-1100 (right)

Two Inexpensive AM/FM Portables:

Sony ICF-38 (analog) Approximately $25

Tecsun CR-1100 (digital) Approximately $50

As we continue to be bombarded with new radio models there is a developing sameness about many of  the current Asian offerings…the new radios seem to focus on extreme features like thousands of (seemingly useless) memories, temperature and S/N displays, DSP processing (which seems to work wonderfully on FM and OK on SW but not so well on AM), yet the overwhelming consensus is that new radios are extremely variable and unreliable, and even the good samples suffer from problems with digital noise and routinely mediocre AM reception compared with many highly regarded vintage radios. I have many of the current crop of radios and although I love portable radios and rarely find ones I don’t like at all I have been frustrated by the apparent disregard by the manufacturers about actual reception quality, audio performance and especially  unit to unit consistency and reliability. We are in a time of explosive growth in this area…I only hope that as this new DSP technology matures there will be an eventual return to quality-consciousness which was once a hallmark of radio manufacturers. End of sermon.

Fortunately there is a positive side to this story. I decided to take a look at what is available in the world of low-cost AM/FM only portables (no shortwave in this report). I’ve found two radios that represent a baseline of performance for the money in the all analog and very inexpensive Sony ICF-38 (about $25) and the digital DSP-based Tecsun CR-1100 (about $50 as of this writing). Each offers good value for the very low cost if your expectations are reasonable…I also compared them with the slightly more expensive C. Crane CC-Radio-EP ($80 although often available for slightly less). As you can see from the picture above the CC Radio-EP is slightly larger than the Tecsun CR-1100 and the Sony is smaller than the Tecsun. I won’t keep you in suspense…the CC Radio-EP is the overall best performing radio in this group as you would expect with the strongest reception (especially AM) and the best sound. But before we discuss performance specifics let’s look at the Sony & Tecsun radios in detail.

Tecsun CR-1100 DSP AM/FM Stereo Radio

$49.99 As Of July 2012 At Many Discounters

DSP – digital signal processing, Digital PLL Tuning

AM: 520 – 1710 KHz

FM: 65 – 108 MHz

Auto Scan, Direct Memory Access, Manual Tuning Knob, Pre-Set Push buttons

3″ speaker

300 pre-set memories

Sleep timer

Back-lit display LCD Display with numerical display of time, frequency, temperature, signal to noise ratio, signal strength, battery level

Alarm function/Sleep Timer up to 480 minutes/Snooze

5 buttons for easy access to your most favorite stations (5 AM, 10 FM using FM1 & FM2)External FM Antenna Jack (F Connector)Headphone Output and Aux Input

Power Source: 4 D batteries (long life claimed) or optional AC Adapter

10.2 x 2.5 x 5.8 inches – 2.2 pounds

1-year manufacturer’s USA warranty

 

Sony ICF38 Portable AM/FM Radio

$24.99 At Many Discounters

Tone control switch

Large built-in speaker  3 5/8″

Earphone jack

LED tuning indicator

Built-In Ac Power Cord

Four  AA Batteries

10.2 x 5.6 x 3.5 inches

2 pounds

Checking Them Out:  As is my usual method I first casually tuned the AM and FM bands to see how my familiar targets (stations) came in on the radios. I was gratified that I didn’t hear any digital hets, squeals and noises on the Tecsun which seem to be epidemic among DSP-equipped radios these days on the AM band. The Sony seemed a hair less sensitive on AM as I would expect but it wasn’t bad…my 100 mile daytime stations were there and listenable, even if not quite as local -sounding as on my best portables. The two radios seemed closer on FM though although the Tecsun was a bit better. Again the Tecsun has a bigger sound than the Sony…it is after all about twice the size so again, no surprise. I then added the CC Radio-EP into the mix and this gave me a fresh perspective.

Sound: The CC-EP sounded much fuller and richer than the Tecsun, just as the Tecsun sounded fuller and richer than the Sony so for sound it was the CC-EP, followed by the CR-1100 followed by the ICF-38 with fairly equal amounts of difference from one to the next.

AM Reception: Neither matched the CC-EP for AM sensitivity. The Tecsun came in second and the Sony  third. But although the Sony was the least sensitive of this group, it was free of one oddity that plagues the Tecsun on some medium-strength AM signals…an unnatural surging or pumping of the audio volume in sync with the program material. I suspect this unusual behavior is caused by the programming of the DSP chip for this particular radio…something that could be changed in future production runs if Tecsun chose to do so. (These DSP chips actually can comprise almost all of the radios RF/IF circuitry so unit to unit consistency could be wonderful if external factors were controlled…the characteristics of these chips can be controlled to some extend by how they are interfaced with the rest of the radio).  There were several medium-strength signals which the Tecsun received well enough to be listenable but they were marred by this volume surging in time with the audio. Interestingly I could often minimize this by either aiming the radio so as to slightly reduce the signal level a bit, or by the use of a loop which added enough additional signal to overcome this anomaly. Although the Sony was a bit less sensitive it was totally free of this DSP nonsense. Of course, adding a small loop made both radios much more pleasant to listen to on weak AM signals…either one did well with a loop. Also note that, like the Sangean PR-D5, the Tecsun tunes only in 10 KHz increments…600, 610, 620 so there is no ability to fine tune or tune between signals. Purists will poo poo this but we’ve lived with car radios like this ever since they went digital. Some listeners will reject any radio that tunes this way for valid reasons but for many program listeners it may well be a non-issue. To put these radios into perspective for their prices I think they are both credible performers.

FM Reception: Here the Sony and Tecsun were more comparable. While neither could pull in some difficult signals I could hear on better (and more expensive) portables, they each were reasonably sensitive and selective so the stations I tend to actually listen to came in just fine on each. Both were also closer to the C.Crane EP for FM which is a testament to what can be done for $50 and $25 respectively these days, although the EP sounded richer and fuller.

Tecsun Features An FM Antenna Jack

Sony Features Built-In AC Power

Features: Here the CR-1100 has it all over the Sony which being all analog has only the basic controls:   On/Off switch, Tone Hi/Lo switch, Band switch, tuning and volume thumbwheels, and a red Tune LED. The Tecsun is a full-featured digital portable as outlined at the top of this report with pushbuttons for quick memory retrieval pus 300 overall presets, the usual clock and timer functions and digital PLL tuning with an LED display. There are some additional nifty features made possible by the DSP chip which we have seen in other recent models, such as numerical  Signal To Noise Ratio (SN) display, signal levels in dbu, temperature readout etc. Many bells and whistles. There is also an input for an external FM antenna.

One feature sorely lacking on the Tecsun is a handle…the slight indentation on the back panel may have been considered a sufficient replacement for a real handle but once you lift the radio this way you will realize how dangerous that is. Best to just grip the whole radio firmly or hold it by its side or bottom…a strange omission.

Tecsun – Hi-Tech Display

Sony – Analog Simplicity

Bottom Line: Either of these radios can be recommended as great for their respective prices. The Sony is plain and simple but hard to fault in any area….it’s a great travel radio and won’t break the bank if lost or broken and it is very simple to use…no learning curve! The Tecsun costs about twice as much, offers better sound and slightly better reception with a host of digital features…it is marred only by one digital side-effect which may drive you crazy or not depending on the signals you listen to.  But overall it’s a nice little package and fun to use. And to remind you of our benchmark, for about $30 more you can own the CC Radio-EP which gives you bigger audio and near state-of-the art AM reception in a package only slightly larger than the CR-1100. In each of these three cases, you get what you pay for!

 

Jay Allen

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