Bill of Materials Introduction

General

DX Shipments Are in 2 Mailings

If you are a non-US builder, please note that Ensemble kit shipments to DX locations are done in two mailings:

1. The first mailing includes the circuit board, ICs and capacitors.
2. The second mailing includes the resistors, connectors, cores/wire, and hardware.

Ferrites

The kit is furnished with a sufficient variety of toroids to enable the builder to build it for any one of the four major "bands". The correct count of ferrites (toroids and binocular cores is as follows:

Ferrite Type	Quantity
T25-2	2
T25-6	2
T30-2	4
T30-6	2
T37-2	2
T37-6	2
BN-43-2402	5
BN-61-2402	3

Note that the binocular cores are of two different types (type 43 and type 61). They have NO distinguishing markings and come in the kit in two separate bags. To be safe, you should decide which type to mark and then place an identifying marking (or piece of tape) on the binocular cores of the selected type just in case the cores get mixed up. Once they are out of their bags, you can easily get them mixed up!.

Note also that the one 100k 1/6W 5% resistor is called for (it is R-Test in the TX OpAmps stage) in performing a test and is NOT included with the kit.

Band-Specific "SUB-BOMs"

below are links to the "sub bills of material" for the band-specific components of the kit:"

1. 160 m Bill of Materials
2. 80/40 m Bill of Materials
3. 40/30/20m Bill of materials
4. 30/20/17 m Bill of Materials
5. 15/12/10 m Bill of Materials

(The SUB-BOMs include the components for applicble, external lowpass filters. A Lowpass filter is needed if you intend to operate in:

• The 80m band after building the 80m/40m option
• The 40m band after building the 40m/30m/20m option
• The 30m band after building the 30m/20m/17m option

There has been considerable discussion on the Softrock40 Group concerning matching of the BS170s to be used in the PA Stage as Q7 abd Q8, The data sheet for the BS170 shows a very wide tolerance for the Gate Threshold Voltage. It seems in most cases this is fairly tightly controlled but some vary from "typical" while still being well within the actual specification. Some randomly selected ones have given variations Tony considers excessive.. Alan, G4ZFQ, has summarized the design of a simple test circuit you might want to consider using in selecting the best matched pair of BS170s out of the batch provided in the kit.

(go directly to build notes) (go directly to build notes)

Bill of Materials

Ensemble RXTX Component Inventory Summary

(resistor images and color codes courtesy of WIlfried, DL5SWB's R-Color Code program)

Component	Value	Markings	Quantity
Band-specific-misc	band-specific		31
boardhdw-HDW	#4 nylon washer		1
boardhdw-HDW	4 X #4-40 hdw (nut, bolt, washer, spacer)		1
Capacitor-Ceramic	100 pF 5%	101	2
Capacitor-Ceramic	220 pF 5%	221	2
Capacitor-Ceramic	1000 pF 5%	102	2
Capacitor-Ceramic	0.01 uF	103	1
Capacitor-Ceramic	0.022 uF 5%	223	4
Capacitor-Ceramic	0.047 uF 5%	473	2
Capacitor-Ceramic	4.7 uF 10% 16V X7R RAD	475	7
Capacitor-Electrolytic	10uF/16 VDC		17
Capacitor-SMT 1206	0.01 uF	(smt)	7
Capacitor-SMT 1206	0.1 uF	(smt) black stripe	18
Connector-BNC-RA	bnc connector pcb (rt-angle)		1
connector-Jack-RA	3.5mm stereo jack - PCB mount (rt-angle)		3
connector-Jack-RA	DC Power Jack PCB Mount (rt-angle)		1
connector-Jack-RA	USB-B pcb jack (rt-angle)		1
connector-Plug	DC Power Plug 5.5/2.1mm Pos Ctr		1
connector-Socket	socket, machine, 8 pin		1
Diode-Axial	1N4003	1N4003	2
Diode-Axial	BZX55C3V3 3.3V zener diode	BZX55C	2
Heatsink-Misc	TO-220 heatsink Silpad		1
heatsink-TO-18	heatsink for driver transistor		1
Heatsink-TO-220	TO-220 heatsink for flat transistors		1
IC-DIP 8	ATtiny 85-20 PU w/V15.12 Firmware	AVR ATTINY85-20PU	1
IC-DIP-4	LTV-817 Opto-Isolator	LTV 817	1
IC-I2C	Si570 Programmable Oscillator	SiLabs 570	1
IC-SOIC-14	74AC74 Dual D FF	74AC74	1
IC-SOIC-16	FST3253 mux/demux switch	FST3253	2
IC-SOIC-8	LT6231 dual op-amp	LT6231	1
IC-SOIC-8	TLV2462CD dual opamp	TVL2462CD	2
IC-SOT-23-5	LP2992AIM5-3.3V regulator	LFEA	1
IC-TO-92	LM78L05 voltage regulator	LM78L05	1
inductor-Binocular core	BN-43-2402 (no markings!)	none	2
Resistor-1/4W	2.2 ohm 1/4W 5%	red-red-gld-gld	2
Resistor-1/4W	10 ohm 1/4W 1%	br-blk-blk-gld-br	2
Resistor-1/4W	22.1 ohm 1%	red-red-brn-gld-brn	1
Resistor-1/4W	33.2 ohm 1%	ora-ora-red-gld-brn	1
Resistor-1/4W	49.9 ohm 1%	yel-wht-wht-gld-brn	6
Resistor-1/4W	56.2 1/4W 1%	grn-blu-red-gld-brn	1
Resistor-1/4W	221 1/4W 1%	red-red-brn-blk-brn	3
Resistor-1/4W	475 1/4W 1%	y-v-grn-bl-br	2
Resistor-1/4W	1 k 1/4W 1%	br-blk-blk-br-br	3
Resistor-1/4W	2.21 k 1/4W 1%	r-r-br-br-br	5
Resistor-1/4W	3.32 k 1/4W 1%	ora-ora-red-brn-brn	1
Resistor-1/4W	4.99 k 1/4W 1%	y-w-w-br-br	5
Resistor-1/4W	10 k 1/4W 1%	br-blk-blk-r-br	11
Resistor-1/4W	22.1 k 1/4W 1%	r-r-brn-r-br	3
Resistor-1/6W	68 1/6W 5%	bl-gry-blk-gld	4
Resistor-1/6W	100 1/6W 5%	br-blk-br-gld	2
Resistor-1/6W	2.2k 1/6W 5%	red-red-red-gld	4
Resistor-1/6W	4.7k 1/6W 5%	yel-vio-red-gld	3
resistor-1/6W	100k 1/6W 5%	brn_blk_yel_gld	1
Resistor-1/6W	1 M 1/6W 5%	brn-blk-grn-gld	1
SET-HDW	#6 screw, hex nut, starwasher		1
Transistor-TO-18	2N2222 NPN transistor		1
Transistor-TO-92	BS170 N-Channel Enhancement Mode FET	BS170	6
Transistor-TO-92	2N3904 NPN Transistor	2N3904	2
Transistor-TO-92	2N3906 PNP transistor	2N3906	2

Band-Specific "Sub-BOMs"

To see the values for the band-specific items, click on the link below corresponding to the desired band/kit

• 160m Kit Band-specific components
• 80, 40m Kit Band-specific components
• 40, 30, 20m Kit Band-specific components
• 30, 20, 17m Kit Band-specific components
• 15, 12, 10m Kit Band-specific components

Component Designations by Stage

Click to see the listing of individual componet designations by stage (e.g., "R1 10 ohms in Local Oscillator Stage").

UnAssigned Components

Check	Designation	Component	Marking	Category	Orientation	Notes	Circuit
❏	Cs2	0.01 uF	(smt)	SMT 1206			Bill of Materials
❏	Cs1	0.1 uF	(smt) black stripe	SMT 1206		spare SMT cap	Bill of Materials

Home    Bill of Materials    Power Supply    USB Power Supply    Local Oscillator    Dividers    RF I/O and Switching    RX Mixer (QSD)    RX Opamps and Output    TX Opamps    TX Mixer (QSE)    Driver/PA    External Connections    Comments   Acronyms  Inventory  Revisions as of 11/30/2011  Components By Stage  WB5RVZ Main Website