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Description
Williams AV FM 558-24 PRO D FM+ PRO System Package (24 R38 receivers & Dante)The FM 558 PRO system package is a complete turnkey solution. It includes 24 PPA R38 receivers and an FM+ C D transmitter for both FM and Wi Fi transmission from the same box. The PRO bundle includes a Dante, coax cable, and rack panel kit for professional installation. This system features the T55C 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
The FM 558 PRO system package is a complete turnkey solution. It includes 24 PPA R38 receivers and an FM+ C D transmitter for both FM and Wi-Fi transmission from the same box. The PRO bundle includes a Dante, coax cable, and rack panel kit for professional installation.
This system features the T55C 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 T55C 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 | |||
ANT 005
| Use with | PPA T45, PPA T55, PPA T55C, PPA T27 Transmitters |
| Connector type | F-connector |
| Cable type | RG 59 coax |
| Nominal Impedance | 75 Ohm |
| Total Cable Length | 22 ft |
| Active Antenna Length | 80 in |
CHG 3512
| Size: | 9.5"L x 7.4"W x 1.7"H (24.1 cm L x 18.8 cm W x 4.3 cm H) |
| Weight: | 1.2 lbs (.54 kg), excluding power supply |
| Color: | Black ABS |
| Power Supply Input: | 90 - 240 VAC input |
| Power Supply: | TFP 037 Switching AC adapter, 5 VDC - 4A output |
| Charging Rate: | 16 Hour Charge: 140 mA Pulse/Maintain: 140 mA |
| Charging Time: | 16 hours nominal |
| Unit Capacity: | 12 Units |
| Indicators: | Individual Charging Indicators: Red LEDs. LEDs blink when batteries are charged |
| Warranty: | 1 year (cables and power supply warrantied for 90 days) |
| Approvals: | CE, WEEE, RoHS |
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 |
| Dimensions: | 4.1" x 2.85" x 1.38" (104 x 72 x 35mm) |
| Weight: | 4.6oz (130g) with batteries. 2.6oz (73g) without batteries |
| Color: | Black/Silver. Black ABS Plastic case with Aluminum faceplate. |
| Battery Type: | (2) AA Alkaline or (2) AA NiMH Rechargeable |
| 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. | |
| Current Consumption: | 52mA nominal |
| Operating Temp. Range: | 32° – 122°F (0° to 50°C) |
| Channels: | 17 Wideband, accessed via menu |
| 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* |
| FM Deviation: | 75 kHz |
| De-Emphasis: | 75 µS |
| Display Screen: | 1" OLED |
| Power Indication: | Power button, backlit green. Good battery strength - glows solid. Low battery - flashes. |
| Sensitivity: | 2 µV at 12 dB Sinad with squelch defeated |
| Input Overload: | 100 mV |
| Frequency Response: | 200 Hz – 15 kHz, ±3dB |
| Modulation: | FM, +/- 75 kHz peak deviation |
| Signal-to-Noise Ratio: | Minimum 65 dB @ 1.0V |
| Receive Antenna: | Integral with earphone/headphone cord |
| Audio Output: | 35 mW max at 16 Ω |
| Headphone Connector: | 3.5 mm stereo jack, mono output for stereo or mono earphones/headphones |
| Supplied Earphone: | Stereo,earbud-type with foam cushion, 3.5 mm plug, 32 Ω |
| Power Save Mode: | Enters sleep mode after approximately 3 minutes of no RF signal |
| Approvals: | FCC, Industry Canada, RoHS, WEEE |
| Warranty: | Lifetime PLUS Limited Warranty, 90 Days on most accessories. |
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4.9 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Excellent
Format: Paperback
Great poet
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2026
★★★★★ 5
Linus's blue blanket
Format: Hardcover
Even though I'm reading the hardcover, I wrap
the wonderful, wise words of W.S. Merwin around me.
His poems infuse my life with an even keener sense of appreciating the "now."
His words keep me in constant contact with my sense of responsibility for our planet.
He's an inspiration for taking action to preserve, conserve, and plant trees, as well as
recognizing the magnitude of the impact that each being carries. The geese, all animals,
relationships, taking better care of the earth and each other,
as well as experiencing the sorrows and the joys in life.
He is dedicated to the craft of poetry and its vital role of importance in our lives.
I wish I could thank him in person, but since that's not realistic, I will continue
to do my best to honor him in my own way, by taking time to observe,
experience, appreciate, write, take action, and reflect upon the beauty in the world
and making the most of each moment. Carpe Diem!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2019
★★★★★ 5
What Merwin Thought Represented Him Best
Format: Paperback
If one volume could sum up adequately W.S. Merwin's artistic development and illustrate his place in American literature with some justice, "Migration" does the job. At least as importantly, it gives us the poet's own opinion on the poems for which he might want to be remembered, much as Nathaniel Tarn inspired Pablo Neruda to do in the selection of Neruda's poems that Tarn oversaw. I bought "Migration" at roughly the same time as
and
and cross-referenced his selection from those titles in "Migration" against the whole. While I still have one or two favorites that did not make the cut, I found the choices he made consistently better-inspired and more timeless than the poems that surrounded them (though overall Merwin has remained a consistent and astonishingly fine craftsman throughout his career). For those who want to go further back than Merwin's more recent books for Copper Canyon Press should not be disappointed.
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Reviewed in the United States on February 10, 2016
★★★★★ 5
Nice looking book
Format: Paperback
Seller shipped fast. Book is in good condition
As it was described.
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Reviewed in the United States on August 17, 2024
★★★★★ 5
ws merwin's collected poems
Format: Hardcover
it's a hardback and it's in great condition. apparently it's a library book that has been in more than one sale, at one point someone had put a price of fifty cents on it. it's sad that arguably one of the better modern writers did not find a permanent home but that meant a great deal for me. also, i hope the reason the book started its journey wasn't because the library folded but that might explain why the book left the shelves to begin with.
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Reviewed in the United States on May 13, 2020