FCC ID: CWWDSDTJK50 700/800 MHZ MOBILE PA

by: Crescend Technologies LLC latest update: 2019-09-23 model: DSDTJK50

One grant has been issued under this FCC ID on 09/23/2019 (this is one of two releases in 2019 for this grantee). Public details available include internal & external photos, frequency information, and manuals. some products also feature user submitted or linked password defaults, warrantee terms, drivers, troubleshooting guides, & instructions.

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all	frequencies		exhibits	applications
		manual

all exhibits 8
1 ~ 2019-09-23 8

app s				submitted / available
1	User Manual	Users Manual	pdf	204.47 KiB
1		Attestation Statements	pdf
1		Cover Letter(s)	pdf
1	External Photos	External Photos	pdf	1.59 MiB
1		ID Label/Location Info	pdf
1		RF Exposure Info	pdf
1		Cover Letter(s)	pdf
1		Test Report	pdf

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User Manual

Users Manual

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204.47 KiB

- Crescend Technologies -

Mobile Power Amplifier DSDTJK50-01T User Manual. 1. Construction. The unit is assembled in the chassis with heatsink, intended for conventional cooling. Unit dimensions are 2.7 x 6.75 x 9.8. All connectors are placed at one side of chassis. Fig. 1 2. Installation Guide. Install the unit in one of two positions: horizontal (fins up) or vertical (front panel up or down). The proper air access to the unit shall be provided: no obstacle for air is allowed closer than 3 from heasink. The place of installation shell provide the ambient temperature between -30C and

+60C. Do not destroy the sealing labels. Screws from # 10 to # 1/4-20 are recommended for unit fastening. See the fastening holes positions in Fig. 2. Fig. 2 2 It is recommended to connect the nut clamp GND to the nearest ground point at the place of installation. Use copper wire # 10 or #12 AWG shall for connection to the car battery. Wires shall be crimped for making ring terminals. Connect the clamp - 13.8V to the pole - of car battery. Connect the clamp + 13.8V to the pole + of car battery. Use 30 A fuse for protection. Use 50 Ohm coax cables with TNC (M) connectors for connecting to XCVR and ANT . Connect the port XCVR to RF output of radio. Connect the port ANT to antenna. 3. Operation Guide

- The DC power supply voltage should provide 13.8 V nominal. The allowed DC voltage value is between 10.8 V and 17.8 V. Note: with DC voltage less than 13.8 V, the output power may be less than rated 50W;

- Do not apply RF signal out of rated frequency range 769 869 MHz;

- For transmitting the input RF power should be in the range 14 W;

- The continuous transmit time should not exceed 3 min, and the duty cycle should not be greater than 40% for avoiding the overheat;

In the case of overheat (if the heatsink temperature reaches +85C) the unit switches to RX mode;

If the load VSWR exceeds 2-3, the output power reduces.

FCC RF Exposure:

This transmitter must be restricted to work related operations in a controlled RF exposure environment. All qualified end-users of this device must have the knowledge to control their exposure conditions and/or duration, and the exposure conditions and/or duration of their passengers, to comply with the General Population/Uncontrolled MPE limit and requirements. All users should maintain a safe distance of 115cm. Part 90 Amplifier - FCC 90.219 CLASS B DEVICE WARNING: This is NOT a CONSUMER device. It is designed for installation by FCC LICENSEES and QUALIFIED INSTALLERS. You MUST have an FCC LICENSE or express consent of an FCC Licensee to operate this device. Unauthorized use may result in significant forfeiture penalties, including in excess of $100,000 for each continuing violation. FCC ID#: CWWDSDTJK50

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External Photos

External Photos

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1.59 MiB

		frequency	equipment class	purpose
1	2019-09-23	851 ~ 869	AMP - Amplifier	Original Equipment

Application Forms

app s	Applicant Information
1	Effective	2019-09-23
1	Applicant's complete, legal business name	Crescend Technologies LLC
1	FCC Registration Number (FRN)	0004288767
1	Physical Address	140 East State Parkway
1		Schaumburg, IL
1		United States

app s	TCB Information
1	TCB Application Email Address	t******@timcoengr.com
1	TCB Scope	B2: General Mobile Radio And Broadcast Services equipment in the following 47 CFR Parts 22 (non-cellular) 73, 74, 90, 95, 97, & 101 (all below 3 GHz)

app s	FCC ID
1	Grantee Code	CWW
1	Equipment Product Code	DSDTJK50

app s	Person at the applicant's address to receive grant or for contact
1	Name	J**** H**
1	Title	President
1	Telephone Number	800-8********
1	Fax Number	84790********
1	E-mail	j******@crescendtech.com

app s	Technical Contact
		n/a

app s	Non Technical Contact
		n/a

app s	Confidentiality (long or short term)
1	Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?:	Yes
1	Long-Term Confidentiality Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?:	Yes
1	If so, specify the short-term confidentiality release date (MM/DD/YYYY format)	03/21/2020
	if no date is supplied, the release date will be set to 45 calendar days past the date of grant.

app s	Cognitive Radio & Software Defined Radio, Class, etc
1	Is this application for software defined/cognitive radio authorization?	No
1	Equipment Class	AMP - Amplifier
1	Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant)	700/800 MHZ MOBILE PA
1	Related OET KnowledgeDataBase Inquiry: Is there a KDB inquiry associated with this application?	No
1	Modular Equipment Type	Does not apply
1	Purpose / Application is for	Original Equipment
1	Composite Equipment: Is the equipment in this application a composite device subject to an additional equipment authorization?	No
1	Related Equipment: Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization?	No
1	Grant Comments	Output Power listed is rated conducted. The antenna used for this transmitter must be installed to provide a minimum separation of 90cm from any person, and must not be co-located or operating in conjunction with any other antenna or transmitter. Users and installers must be provided with antenna installation instructions and transmitter operating conditions, including antenna co-location requirements of § 1.1307(b)(3), for satisfying RF exposure compliance.
1	Is there an equipment authorization waiver associated with this application?	No
1	If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded?	No

app s	Test Firm Name and Contact Information
1	Firm Name	Timco Engineering, Inc.
1	Name	B** C****
1	Telephone Number	352-4********
1	Fax Number	352 4********
1	E-mail	b******@timcoengr.com

Equipment Specifications
	Line	Rule Parts	Grant Notes	Lower Frequency	Upper Frequency	Power Output	Tolerance	Emission Designator	Microprocessor Number
1	1	9		769	775	50	Amp	F3E
1	2	9		769	775	50	Amp	F1E
1	3	9		769	775	50	Amp	F1D
1	4	9		769	775	50	Amp	F1W
1	5	9		769	775	50	Amp	F2D
1	6	9		769	775	50	Amp	FXE
1	7	9		769	775	50	Amp	FXD
1	8	9		799	805	50	Amp	F3E
1	9	9		799	805	50	Amp	F1E
1	1	9		799	805	50	Amp	F1D
1	11	9		799	805	50	Amp	F1W
1	12	9		799	805	50	Amp	F2D
1	13	9		799	805	50	Amp	FXE
1	14	9		799	805	50	Amp	FXD
1	15	9		806	824	50	Amp	F3E
1	16	9		806	824	50	Amp	F1E
1	17	9		806	824	50	Amp	F1D
1	18	9		806	824	50	Amp	F1W
1	19	9		806	824	50	Amp	F2D
1	2	9		806	824	50	Amp	FXE
1	21	9		806	824	50	Amp	FXD
1	22	9		851	869	50	Amp	F3E
1	23	9		851	869	50	Amp	F1E
1	24	9		851	869	50	Amp	F1D
1	25	9		851	869	50	Amp	F1W
1	26	9		851	869	50	Amp	F2D
1	27	9		851	869	50	Amp	FXE
1	28	9		851	869	50	Amp	FXD

some individual PII (Personally Identifiable Information) available on the public forms may be redacted, original source may include additional details