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Description
Williams AV FM 558-12 FM+ System Package (12 R38 receivers)The FM 558 system package is a complete turnkey solution includes 12 PPA R38 receivers and an FM+ transmitter for both FM and Wi Fi transmission from the same box. This system features the cutting edge PPA T55 transmitter (replacing the T45 FM transmitter) with multiple digital audio input options and an OLED display with easy to manage navigation, and network control features. Each FM R38 is a multi channel FM receiver with a high resolution OLED
The FM 558 system package is a complete turnkey solution includes 12 PPA R38 receivers and an FM+ transmitter for both FM and Wi-Fi transmission from the same box.
This system features the cutting edge PPA T55 transmitter (replacing the T45 FM transmitter) with multiple digital audio input options and an OLED display with easy-to manage navigation, and network control features.
Each FM R38 is a multi-channel FM receiver with a high-resolution OLED screen. The receiver comes with earphones and batteries, but is otherwise identical to the PPA R38. The R38 offers a quick view of receiver status and immediate entry to all user settings. On-screen channel selection with easy access to 17 pre-set, wide-band frequencies (72-76 MHz). The system is expandable, accommodating any number of listeners. This system complies with 2010 ADA guidelines for hearing assistance all for nearly the same cost as traditional FM systems.
Specifications
| Dimensions | 8.45″ W x 8.25″ D x 1.72″H (21.5 cm x 21 cm x 4.4 cm) | |||
| Weight | Transmitter: 3.2 lbs (1.45 kg) | |||
| Color | Black/Silver with silver legends on the front, white legends on the back | |||
| Rack Mount | Standard 19” Rack, one EIA rack space high, 1/2 space wide 1–2 units can be mounted in a single rack space with optional RPK 005 (single) or RPK 006 (double) Rack Mount Kits |
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| Power Supply | Desktop Style Transformer (TFP 062); Input: 100-240 VAC, 50/60 Hz. IEC Line Cord; Output: 24 VDC, 750 mA, 18W. 2.5mm ID center positive barrel connector | |||
| Power ON Indicator | Push On/Push Off latching power button, backlit green indicates power ON, backlight off indicates power OFF, fading from bright to dark indicates Sleep Mode. | |||
| Temperature Range | Operating: +32° F to +122° F (0° C to 50° C); Storage: -4° F to +158° F (-20° C to 70° C) | |||
| User Interface | 3.12” High Resolution OLED display with selections via buttons. Hosted Web page. Remote control and monitoring. | |||
| Dante | Only available on FM T55 D | |||
| Ethernet | RJ-45 on back of unit supports CAT 5e cable lengths up to 328 feet (100 meters); 10/100 Base-T IEEE 802.3 compliant, unique MAC address | |||
| RF Section | ||||
| Operating Frequencies | 72.1-75.9 MHz , 17 wideband channels (selectable) | |||
| Frequency Accuracy | ± 2 ppm stability, 0-50˚ C | |||
| Deviation | ± 75 kHz maximum | |||
| Pre-Emphasis | 75 microsec | |||
| RF Field Strength | Does not exceed 80 mV/m at 3 m | |||
| Compatible Antennas | ANT 005, ANT 021, ANT 024, or ANT 025
Refer to Williams AV’s Antenna Selection Install Guide for FCC-compliant antennas for this product. |
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| Transmission Range | Up to 1000 ft (304 m) with ANT 005 coaxial antenna mounted on rear chassis connector | |||
| RF Outputs | (1x) #10-32 stud connector in center of unit (pcb mounted) (1x) F-connector on rear chassis |
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| RF Transmit Indicator | 1 Green LED On Air Indicator | |||
| RF Power | Full, Medium, Low or OFF indiacted by menu icon. | |||
| RF Time Out (sleep mode) | 30 min. duration, 4 hr. duration, or Always On selected via menu. Starts when audio is below -18 dB level with no button pressed for selected duration. | |||
| Audio Section | ||||
| Audio Processor Functions | DSP based; Compression: 1:1, 1.5:1 or 2:1; High-pass and Low-pass Filter Frequency control | |||
| Frequency Response | 31-16000 Hz, ±3 dB (re: 1 kHz, ±3 dB) (“Music” Audio Preset) | |||
| Signal-to-Noise Ratio | 67 dB (typical) Transmited RF | |||
| Total Harmonic Distortion | Less than 0.25% @ 1 kHz (RF output) | |||
| Common Mode Rejection | Greater than 57 dB @ 1 kHz, Mic or Line | |||
| Audio Inputs | (1x) Combination 3-pin XLR, 1/4″ (TRS) jack for balanced or unbalanced line level, or balanced or unbalanced microphone with selectable phantom power | |||
| Audio Input Gain Adjust | In menu, adjustable to 0 to -50 dB, in 1dB steps | |||
| Phantom Power | 14.4 VDC applied through 2.2 kOhms resistors to analog combo jack: Pin 2 and Pin 3 on XLR jack, or tip and ring on 1/4″ TRS jack | |||
| Audio Level Indicators | 10-LED array that reads -18 to +9 dB at 3 dB intervals. 7 Green, 2 Amber, and 1 red LED. Green LEDs indicate normal operating audio level peaks, Amber LEDS indicate close to overload peaks, Red LED indicates overload peaks | |||
| Headphone Output | 1/4″ TRS stereo jack, mono signal, 14.85 mW at +9dB, maximum in 33 Ω (level adjustable in menu 0 to -40 dB in 2 dB steps) | |||
| Line Output | RCA jack (black), -10 dBV (.32 VRMS); Output impedance 100 ohms at +9dB | |||
| Input Levels (Bal or Unbal) (at Audio Input Gain = 0dB) |
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| Microphone |
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| Line |
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| Approvals | FCC, RoHS3, WEEE, Industry Canada | |||
| Warranty | 2-year parts and labor | |||
EAR 022
| Style | Around-ear speaker |
| Plug | 3.5mm mono |
| Cord | 39" |
| Driver Size | 23 mm |
| Nominal Impedance | 32Ω |
| Freq. Response | 20 - 20kHz |
| Weight | 15g |
| Max Power Input | 30 mW |
| Sensitivity | 118 dB @ 1kHz |
NKL 001
| Color: | Black |
| Weight: | 1.5 oz |
| Length: | 18.5” cord |
| Connector: | NKL 001: 3.5 mm mono plug NKL 001-S: 3.5 mm stereo plug with ring disconnected |
| Impedance: | 8-16 Ohms |
| Input Power: | 500 mW max |
| Magnetic Field Strength: | 25 mW input at 1000 Hz produces 1.7 A/m 6” above the center of loop 85μW input produces 0.1 A/m (IEC Standard) |
| Approvals: | RoHS, WEEE |
| Warranty: | One Year |
PPA R38N
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Dimensions: |
4.1" x 2.85" x 1.38" (104 x 72 x 35mm) |
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Weight: |
4.6oz (130g) with batteries. 2.6oz (73g) without batteries |
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Color: |
Black/Silver. Black ABS Plastic case with Aluminum faceplate. |
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Battery Type: |
(2) AA Alkaline or (2) AA NiMH Rechargeable |
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Battery Life: |
(2) AA non-rechargeable alkaline batteries (BAT 001-2), approx. 50 hrs. |
| (2) AA rechargeable NiMH batteries (BAT 026-2), 1500mAh, approx. 32 hrs. | |
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Current Consumption: |
52mA nominal |
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Operating Temp. Range: |
32° – 122°F (0° to 50°C) |
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Channels: |
17 Wideband, accessed via menu |
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Operating Frequencies: |
72.1, 72.2, 72.3, 72.4, 72.5, 72.6, 72.7, 72.8, 72.9, 74.7, 75.3, 75.4, 75.5, 75.6, 75.7, 75.8, 75.9 MHz* |
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FM Deviation: |
75 kHz |
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De-Emphasis: |
75 µS |
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Display Screen: |
1" OLED |
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Power Indication: |
Power button, backlit green. Good battery strength - glows solid. Low battery - flashes. |
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Sensitivity: |
2 µV at 12 dB Sinad with squelch defeated |
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Input Overload: |
100 mV |
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Frequency Response: |
200 Hz – 15 kHz, ±3dB |
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Modulation: |
FM, +/- 75 kHz peak deviation |
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Signal-to-Noise Ratio: |
Minimum 65 dB @ 1.0V |
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Receive Antenna: |
Integral with earphone/headphone cord |
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Audio Output: |
35 mW max at 16 Ω |
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Headphone Connector: |
3.5 mm stereo jack, mono output for stereo or mono earphones/headphones |
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Supplied Earphone: |
Stereo,earbud-type with foam cushion, 3.5 mm plug, 32 Ω |
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Power Save Mode: |
Enters sleep mode after approximately 3 minutes of no RF signal |
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Approvals: |
FCC, Industry Canada, RoHS, WEEE |
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Warranty: |
Lifetime PLUS Limited Warranty, 90 Days on most accessories. |
Shipping Notes
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Exchange/Return Notes
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4.3 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
Excellent Parallel Worlds and Xianxia Story
Format: Kindle
The story follows two affable characters, Rugrat and Eric. Rugrat is a wonderfully written redneck and Erik plays the role of an exasperated and loyal brother in arms.
The two main characters interactions between each other bring interesting banter to the different parts of the story that other wise progress too slowly. It’s a cultivation novel and the main characters often take a great deal of time learning more about the system and how they can leverage its powers.
The magic system in world combines well with the parallel world aspect, and the main characters thrive in their new environment. The stats, like in many other stories in this genre, serve as relatively arbitrary plot pieces that could be easily handled without the stats. The potential for growth and the magic systems interesting interactions with modern technology makes the magic satisfying to read about.
My favorite aspect of the story so far is the clashing of the honorable soldier mentality with the “might makes right” philosophy of martial arts cultivation novels. Though it’s clear the author heavily favors one philosophy over the other.
A great read, and an excellent novel to enjoy as an audiobook.
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Reviewed in the United States on November 7, 2019
★★★★★ 4
Xianxia-inspired novel I can actually read
Format: Kindle
I've read (or attempted to read) several wuxia/xianxia stories in the past. This is probably the best of that genre that I've tried.
I know, such a titillating opening statement, but hear me out: this story is very good. NOT great, but not the typical "my eyes wish to bleed from my skull" experience, either.
Most Chinese fantasy is bad. I wish that were not so, hence me trying to find good stories. In general, the stories don't make a lot of sense, and the grammar and repetitive phrasing makes the translations a generally terrible experience. Coming from a background of looking at college student papers, I've had my fill of bad grammar and poor sentence structure; I don't need more.
With an English speaking author at the helm, however, this was a pleasant ride. There were a few grammatical errors but nothing to get my pants in a twist over. The story mostly makes sense, with only the two main characters occasionally speaking like locals throwing me off a bit, as well as the two of them growing so used to elements of their surroundings and quest rewards. It just felt a little unnatural in places.
My biggest gripe is how they suddenly sprout knowledge of city planning and infrastructure. That really felt out of character, and came out of left field.
Other than that, I think this was a solid first entry for this series.
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Reviewed in the United States on August 1, 2019
★★★★★ 5
Great great great but …..
Format: Kindle
Before I get into the meat and potatoes of this review this is a five star book. I have to say that starting out it is a five star book now rarely is a book absolutely perfect don’t get me wrong there are some classics in this genre or others that are just perfect now since this is the first book in the series it’s not perfect there are some points where concepts could’ve been made clear there are some points where things run a little long arcs in the story run a little long but overall it’s a 10. Imagine you going to a five star immaculate restaurant you sit down to eat and the waiter brings you your food they make one mistake they spill a drop of wine on the tablecloth is that a big deal no does it diminish the experience no but you notice it. Same thing here.
No onto some specifics 10 realms has a great progression system two dynamic MC’s and a sort of bro shooter story. That’s what you get here and you get lots of that here. When you finish the book you’re going to want to move onto the next so you know it’s a great book now there are times when the story slows down it goes a little too slow in the middle of the book again you could flip through and to be past it but ultimately you can read through it and you will be better for it. Is it that bad no not really but you do notice it. Once the story really picks back up your back into it and like I said you’re going to want to continue it. Since it is the first book in the series I can understand this problem I’d like many others look forward to seeing what is next.
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Reviewed in the United States on April 27, 2022
★★★★★ 5
Interesting twist on an Isekai
Format: Kindle
I really enjoyed this novel. Not only are the two main characters well developed, but so are the side characters. The slice-of-life setup is done well, with with you (the reader) being pulled along into the story. Right from the beginning, the author is successful in getting you to be fully invested in their struggles.
While the book could stand to have another editorial pass, it does not detract greatly from the story.
I also really enjoyed the Beast Mountain Trials. Far from your standard dungeon run, the - contestants? participants? contender? - whatever you want to call the people who participate in the Trials alongside Erik and Rugrat, who sort of fall into the Trials while trying to just live their lives and figure out how the Ten Realms things works, all participate in the different levels to see how far they can go. While the sect elders seem to understand that passing all the levels grants that person control of the dungeon, it also seems like everybody else who participates (or has participated) stops short of the last trial. Well, either that or, while they may successfully withstand the waves of beasts - the letter of the quest - they fail in the spirit of the quest, and thus fail to "beat" the dungeon. Given the way the villagers respond to Erik and Rugrat almost every time they do something to improve the villagers - often at their own expense or sacrifice - it is clear that the Ten Realms is very much a Darwin-esque universe. The strong rise to the top; the weak fall to the bottom. Yet, the many citizens of the universe, at least in the First Realm, have clearly failed to realize that they are stronger together. Which is perhaps why no one else has successfully completed the Beast Mountain Trials.
Finally, while I knew that Erik and Rugrat were going to enact their revenge upon the Moon Healing House, I did not expect ... that. Not to say that it wasn't warranted, not out of character. Nor was is really unexpected. Not really. I was just a little surprised at the sheer coldness of it.
I am definitely looking forward to reading the next book, as Erik and Rugrat ascend to Second Realm to continue their work toward healing the dungeon.
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Reviewed in the United States on December 27, 2021
★★★★★ 5
Another great start to an interesting series :)
Format: Kindle
A great start to a new series, a very good hybrid between a light LitRPG and Wuxia combination which somehow is greater than the sum of its parts. For LitRPG aficionados, the leveling system is pretty basic, but solid, the crafting part bringing it a lot more flesh and sparkle. For those who like Wuxia, they will instantly recognize many of the concepts and may enjoy (as I know I did) the emergent clash between the `strength first` philosophy so prevalent in Wuxia novels and the `strength with a helping hand` model of many Western writings. The second part of the novel contains some town-building, tower-defense elements which I found well-thought out and interesting, and I am truly looking forward to the way they will develop `in the next realms`. The protagonists are interesting, you can really empathize with them, especially at first, and the character building is slow but steady. I was surprised by the specializations they chose, and I absolutely loved the healer/healing part of the world-building, for me it was fascinating. I think I read the book in one day, even it is by no means short, and I found it very enjoyable.I am looking forward to all its sequels!
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Reviewed in the United States on July 24, 2018