The FM line from Aldena includes dipoles and panel antennas for different directional or omnidirectional layouts, antennas for installation on square or triangular masts or towers. All types of antenna are available in horizontal, vertical, circular or elliptical polarization.
All FM dipole antennas from Aldena are made of stainless steel or hot dip galvanized steel in order to guarantee longer-than-average durability, even in harsh climate conditions (such as high levels of pollution, air salinity or acid rain). Aldena dipoles antennas in this range are able to be pressurized, which is a characteristic of the most complex antenna systems, and it is often necessary to guarantee reliability.

ANTENNA FEATURES

Double-crossed dipole antenna.
Circular polarization.
Broadband 87.5÷108 MHz.
Omnidirectional radiation pattern.
Demountable.
Pressurizable.
Aluminium or stainless steel version.

ELECTRICAL DATA

WORKING BAND:	87.5 – 108 MHz
BANDWIDTH:	VHF band FM
GAIN:	0.45 dBd (2.65 dBi)
VSWR:	≤ 1.4:1 (-15.5 dB) (ACF02022XX) ≤ 1.29:1 (-18 dB) (ACF020221X Hi or Lo version)
POLARIZATION:	Circular
IMPEDANCE:	50 Ohm unbalanced
HALF POWER BEAMWIDTH:	Omnidirectional ± 1.5 dB in free space Omnidirectional ± 2.0 dB with pole ø104mm (4”)
LIGHTNING PROTECTION:	All metal parts DC grounded, including inner conductors
AVAILABLE VERSION AND CODE:	ACF0202215 – EIA 7/8” – max 5000W RMS ACF0202216 – DIN 7/16” – max 3000W RMS ACF0202217 – N – max 800W RMS ACF0202215A – EIA 7/8” 90° UP/DOWN 5000W RMS ACF0202235 – EIA 7/8” – max 5000W RMS ACF0202236 – DIN 7/16” – max 3000W RMS ACF0202237 – N – max 800W RMS ACF0202235A – EIA 7/8” 90° UP/DOWN 5000W RMS
AVAILABLE SEMI-BAND MODEL:	ACF020221XHi (Freq. 94 – 108 MHz) ACF020221XLo (Freq. 87.5 -104 MHz)

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Weight	1.82 kg
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specification	664 Specs: Frequency Response 20 Hz to 50 kHz, ± 0.5 dB THD + Noise 0.09% max (50 kHz, +18 dBu at line out, fade fully up) Equivalent Input Noise -126 dBu (-128 dBV) maximum. (22 Hz – 22 kHz bandwidth, flat filter, trim control fully up) Inputs XLR Mic: active-balanced for use with ≤600 ohm mics, 4k ohm actual; 12V or 48V phantom power, 10 mA max XLR AES: AES3 or AES42 (10 V power), SRC XLR Line: active-balanced for use with ≤2k ohm outputs, 10k ohm actual TA3 Line (7-12): active-balanced for use with ≤2k ohm outputs, 10k ohm actual RTN A, B, C (3.5 mm/10-pin): unbalanced stereo for use with ≤2k ohm outputs, 30k ohm actual Maximum Input Level XLR Mic: 0 dBu (0.78 Vrms) XLR Line: +40 dBu (80 Vrms) RTN A, B, C (3.5 mm/Multi-pin): +24 dBu (12.4 Vrms) High-Pass Filters Sweepable 80 Hz to 240 Hz, 12 dB/oct at 80 Hz, 6 dB/octave at 240 Hz Input Limiters Individual limiters on both trim and fader stages, +16 dBu threshold, 20:1 limiting ratio, 1 mS attack time, 500 mS release time Link I/O Unbalanced stereo for linking to MixPre, 302, 442, 552, and 664; 2k ohm impedance Maximum Gain Mic-In-to-Line-Out: 93 dB Mic-In-to-Aux-Out, -10 Out: 79 dB Line-In-to-Line-Out: 39 dB Output Type Line: transformer-balanced for use with >=600 ohm inputs, 100 ohms -10: transformer-balanced for use with >=10k ohm inputs, 3.2k ohm Mic: transformer-balanced for use with >=600 ohm inputs, 150 ohms TA3 Mic/Line: active-balanced, pin-2 and 3 driven, for use with >=3k ohm inputs, 1k ohm TA3 Direct Outs Mic/Line: active-balanced, pin-2 and 3 driven, use with >=3k ohm inputs, 1k ohm Tape Outs (3.5 mm and TA3-type): unbalanced, stereo, use with >=6k ohm input, 1.8k ohm actual Headphones (3.5 mm and 1/4"): unbalanced, stereo, use with 8-2k ohm headphones, 50 ohms Line Output Clipping Level (1% THD) 20 dBu minimum with 10k load Maximum Output Level Line: +20 dBu (7.8 Vrms) -10: +6 dBu (1.5 V rms) Mic: -20 dBu (0.078 Vrms) Tape Outs: +6 dBu (1.5 Vrms) Output Limiters Affects analog output. Threshold selectable from +4 dBu to +20 dBu, 1 dB steps, 20:1 limiting ratio, 1 mS attack time, 500 mS release time. Recording Tracks 16 tracks (12 inputs, 4 output buses), monophonic or polyphonic Broadcast WAV or timecode-stamped MP3 A/D 24-bit, 114 dB, A-weighted dynamic range typical; 44.1 kHz, 47.952 kHz, 48 kHz, 48.048 kHz SR Digital Outputs AES3 transformer-balanced, in pairs; 1-2 XLR-L, 3-4 XLR-R, 5-6, multi-pin 1, 7-8, multi-pin 2, 110 ohm, 2 V p-p, AES and S/PDIF compatible Recording Storage Type SDHC, SD, SDXC – exFAT for cards >32 GB, FAT32 for <32 GB; CompactFlash (CF) FAT32, will format memory cards in unit Sample/Timecode Accuracy ± 0.2 ppm (0.5 frames per 24 hours) Timecode and Sync Modes Supported: off, Rec Run, Free Run, 24h Run, External Frame Rates: 23.976, 24, 25, 29.97DF, 29.97ND, 30DF, 30ND Accuracy: Ambient generator, 0.5 frame in 24 hr Time Code Input: 20k ohm impedance, 0.3 V – 3.0 V p-p (-17 dBu – +3 dBu) Time Code Output: 1k ohm impedance, 3.0V p-p (+12 dBu) Word In/Out: square wave; 10k/75 ohm, 1-5V p-p input; 75 ohm, 3.3V p-p output, at SR Power External: isolated 10-18 V on locking 4-pin Hirose connector, pin-4 = (+), pin-1 = (-). Internal: accepts five (5) NiMH, 1.5V Lithium, or Alkaline AA batteries. Note that run time will be very limited when using Alkaline batteries (30 minutes to one hour depending on settings). NiMH or Lithium batteries are the preferred type because of the approximate 2x to 4x run time compared to Alkalines. Environmental Operating: -20°C to 60°C, 0 to 90% relative humidity; (non-condensing) Storage: -40°C to 85°C Dimensions and Weight Dimensions: 5.3 cm x 32 cm x 19.8 cm (H x W x D) 2.1" x 12.6" x 7.8" Weight: 4 lbs. 12 oz. (unpackaged, without batteries)
Color	Black