CW2000 Band 20 + 1 Explained: How the 2000m² Enterprise Flagship Delivers 4G LTE Data and 3G All-Networks in UK HQs and Warehouses
The Boost4U CW2000 is the final enterprise flagship of the CW dual-band range, tuned to two paired FDD bands for UK headquarters, large offices, hotels, warehouses, shopping centres and industrial parks: Band 20 on 800 MHz carries EE, O2, Vodafone and Three 4G LTE data, while Band 1 on 2100 MHz carries the same four hosts' 3G UMTS data and voice as the all-network fallback. Inside up to 2000 m² for 200 simultaneous users, the chassis runs ≥70 dB uplink and ≥75 dB downlink gain at the flagship tier shared with the CW1000, a ≥27 dBm output the highest in the CW series, a ≤5 dB noise figure, the included high-gain Yagi directional aerial, a 3 dBi indoor whip, and stacked multi-way splitters for up to ten indoor antennas. This deep dive explains why 800 MHz reaches walls, racking and mall aisles, how the 2100 MHz 3G layer keeps a call alive when 4G drops, what the seven-decibel output jump buys over the CW1000, how each MVNO brand routes through the four hosts, the honest limits on 2G and 5G, and the Ofcom, UKCA, CE and RoHS marks behind an enterprise installation.
Answer first: the CW2000 pairs Band 20 (832–862 MHz uplink, 791–821 MHz downlink) with Band 1 (1930–1990 MHz uplink, 2110–2180 MHz downlink). Band 20 delivers 4G LTE data for EE, O2, Vodafone and Three across walls, concrete and racking; Band 1 keeps the 3G UMTS data and voice fallback for those same four hosts when a staff or guest phone cannot hold the 4G session. The ≥70/75 dB gain matches the CW1000 flagship tier; the real flagship jump is the ≥27 dBm output, seven decibels above the CW1000, about five times the radiated power, which feeds ten indoor antennas across 2000 m² for 200 users. The Yagi is included, the splitters reach ten whips, and the unit is Ofcom licence-exempt with UKCA, CE and RoHS marks. It does not carry 2G voice on Band 8 or Band 3, does not carry 5G, and the 2000 m² rating covers one enterprise building rather than a whole campus.
Band 20 on 800 MHz: the 4G LTE Layer for Four Hosts
Band 20 sits at 832–862 MHz on the uplink, where handsets transmit, and 791–821 MHz on the downlink, where the mast transmits. In the UK it carries EE, O2, Vodafone and Three 4G LTE, and this is the layer that feeds browsing, email, booking systems, POS terminals, warehouse scanners and video calls inside the CW2000's enterprise space.
Why 800 MHz penetrates warehouse bays, hotel corridors and mall aisles
Lower-frequency radio bends around obstructions and passes brick, concrete, timber framing, drywall and metal racking with less loss than a higher urban layer; that is why Band 20 was reserved for wide-area coverage and why it still reaches rural and semi-rural industrial parks that a shorter-wavelength 4G band skips past. A Yagi aimed at the serving mast feeds that 800 MHz donor into the chassis, the ≥75 dB downlink stage amplifies it, and the ten whips re-radiate the 4G layer through open-plan HQ floors, hotel corridors, warehouse bays and mall aisles. In a Wales warehouse, a Devon headquarters and a Norfolk office, customers reported solid 4G on the targeted host after the included Yagi locked onto the mast; the lower band reaches further than the handset alone could through the roof structure and multi-storey masonry.
What the four hosts actually put on Band 20
| Host | Band 20 service | Enterprise use on the premises |
|---|---|---|
| EE | 4G LTE data over 800 MHz | Staff email, POS, reception video calls |
| O2 | 4G LTE data over 800 MHz | HQ browsing, hotel and mall guest data |
| Vodafone | 4G LTE data over 800 MHz | Warehouse scanning, tablets, reporting |
| Three | 4G LTE data over 800 MHz | Open-plan browsing and video meetings |
MVNOs riding these hosts inherit the same Band 20 layer: giffgaff, Tesco Mobile, Sky Mobile and Lycamobile on O2; Smarty, iD Mobile, ASDA Mobile, Plusnet and Virgin on EE; Lebara and TalkTalk on the Vodafone fallback-only leg; Talkmobile on Vodafone. The CW2000 amplifies whatever SIM's host is locked to the donor mast, one serving carrier per tuned band at a time, so a buyer aiming at a specific host should confirm that host's mast bearing before fixing the Yagi.
Band 1 on 2100 MHz: the 3G UMTS Data and Voice Fallback
Band 1 pairs 1930–1990 MHz uplink with 2110–2180 MHz downlink. This is the 3G UMTS layer, and on the CW2000 it carries EE, O2, Vodafone and Three 3G data and voice. Its job inside the enterprise premises is the safety net: when the 4G session drops as a handset moves between floors, wings or behind racking, the phone steps down to the 3G layer that the chassis still amplifies.
How 3G keeps the call and the data session alive where 4G fails
3G UMTS supports circuit-switched voice and packet data, so a handset that cannot hold an 800 MHz 4G bearer can still call out, text, send a location fix or hold a low-bandwidth data session over the amplified 2100 MHz layer. For a hotel where guest calls must not drop on the lower wing, a warehouse where a fork-lift radio handset keeps contact, and an HQ where a video call should fall back to an audio call rather than die, the Band 1 layer is the redundancy that a 4G-only repeater cannot provide. The chassis tunes both bands together: the Yagi feeds both donors, the dual stage amplifies each on its own paired channel, and the whips radiate both to the 200-user field.
2100 MHz propagation trade-off across a 2000m² floor plan
The 2100 MHz band travels shorter distances and loses more through masonry and steel than 800 MHz, which is why the indoor whips spread across ten zones through the stacked multi-way splitters rather than clustering on one desk. The ≥70 dB uplink gain recovers the faint handset-side signal back toward the mast, and the 27 dBm output keeps each of the ten zones audible; a far aisle that reads light on 3G is the reason to place another whip in that zone, not to move the Yagi further off the mast bearing.
How ≥70/75dB Gain and ≥27dBm Output Reach 2000m²
The CW2000's radio numbers separate it from the lower CW models, and the gain, output, noise figure and indoor antenna count each do a different job across a 2000 m² enterprise space.
≥70/75 dB: the same flagship gain tier as the CW1000
Gain is the amount the chassis magnifies the faint donor signal: ≥70 dB on the uplink from handset to mast, ≥75 dB on the downlink from mast to handset. These figures match the CW1000 flagship tier; the CW2000 does not claim more gain than the CW1000. That shared tier locks onto a weak rooftop donor through roof loss and cable length, and keeps both Band 20 and Band 1 donors locked where a lower 60/65 dB stage would not. The 18KA surge protector and longer outdoor cable do not raise gain; only the chassis stage and a correctly aimed Yagi do that.
≥27 dBm output: the flagship jump, about five times the CW1000 power
The ≥27 dBm output is the radiated level the whips send into the zones, and it is seven decibels above the CW1000's ≥20 dBm. Each three decibels roughly doubles power, so seven decibels approaches five times the radiated field, which is the headroom needed to divide the signal through stacked splitters to ten indoor antennas over 2000 m² rather than four whips over 1000 m². The noise figure stays ≤5 dB so the amplified field does not bring in hiss, and the automatic stage keeps gain from feeding itself back into oscillation on weak donors. Buyers should read 27 dBm as the power that survives splitter loss across ten zones, not as a louder single-whip shout; the gain tier and bands match the CW1000.
Radio summary for the enterprise buyer
| Parameter | CW2000 figure | What it delivers on site |
|---|---|---|
| Uplink gain | ≥70 dB | Weak handset signal recovered to the mast across ten zones |
| Downlink gain | ≥75 dB | Faint mast donor amplified to the indoor whips |
| Output power | ≥27 dBm | Five times the CW1000 field; split to ten antennas |
| Noise figure | ≤5 dB | Keeps the amplified field clear of hiss and noise |
| Coverage / users | 2000 m² / 200 handsets | HQ, hotel, warehouse, mall, industrial park |
| Outdoor antenna | Yagi directional, included | Focuses the beam on the serving mast |
| Indoor expansion | Multi-way splitters, ten whips | Zones spread across floors, wings and aisles |
MVNO Host Map for HQ SIM Pools, Hotel Guest SIMs and Retail Staff
A business using budget SIM pools should know which host each brand rides; the CW2000 amplifies the host's Band 20 and Band 1 layers, so a SIM rides whatever network its MVNO partner leases.
| Brand | Host | Band 20 4G / Band 1 3G position |
|---|---|---|
| giffgaff, Tesco Mobile, Sky Mobile, Lycamobile | O2 | Both 4G layer and 3G fallback on the CW2000 |
| Smarty, iD Mobile, ASDA Mobile, Plusnet, Virgin, T-Mobile, Orange, FreedomPop, The People's Operator | EE | Both 4G layer and 3G fallback on the CW2000 |
| Talkmobile | Vodafone | Both layers on the CW2000 |
| Lebara, TalkTalk | Vodafone fallback-only list | Band 1 call leg amplified; no Band 20 4G claim |
Before commissioning a mixed-SIM HQ, hotel or retail pool, check the donor mast that the Yagi actually locks: if the serving tower belongs to O2, EE and Vodafone-riding SIMs on that bearing still benefit from the shared 800 MHz rural layer in many sites, but a brand that has no local mast of its host cannot be rescued by the chassis. A Cornwall office customer running giffgaff on O2 reported all 200 users held across the floors with the multi-antenna setup; a Lebara customer on Vodafone reported steady 4 to 5 bars after setup, consistent with the fallback-only leg being served through the Vodafone donor present at that site.
3G Fallback, VoLTE and What the Phone Actually Switches To
When 4G drops, the phone steps to Band 1 rather than disconnecting
On a CW2000 install, a handset that loses the 4G bearer on 800 MHz can fall back to the 3G UMTS layer on 2100 MHz that the chassis still amplifies, keeping a voice call, a text or a slow data session alive. This is the redundancy that the CD2000 Band 20+3 4G-only unit cannot offer, and it matters on warehouse floors, hotel wings, mall aisles and rural HQ annexes where 4G signal fluctuates between rooms.
VoLTE where the handset and host support it
Where the phone and the serving host support Voice over LTE, a voice call can ride the Band 20 4G packet layer rather than the circuit 3G layer; the CW2000 amplifies the 4G bearer either way. The unit does not add VoLTE capability to a phone that never had it, and a host network that has retired 3G in a local area will show its own fallback behaviour; the chassis amplifies what the mast transmits, it does not create a missing service.
Why this unit cannot rescue a 2G-only handset or a 5G contract need
The chassis tunes Band 20 and Band 1 only. A legacy handset that steps to 2G on Band 8 (900 MHz) or Band 3 (1800 MHz) sees that circuit unboosted, whatever the 27 dBm field beside the whip; a 5G contract needing n78 or n79 remains on the 5G band this box does not carry, and any future 3G switch-off by a host should be checked on Ofcom's current network status before sizing a business around the fallback leg.
CW2000 Against the CW Series and the Dual-Band Range
| Unit | Bands | Radio and coverage | Position versus CW2000 |
|---|---|---|---|
| CW2000 | Band 20 + Band 1 | 4G + 3G all, ≥70/75dB, ≥27dBm, 200 users, 2000m², 10 antennas, Yagi included | Enterprise flagship: highest output, ten zones |
| CW1000 | Band 20 + Band 1 | 4G + 3G all, ≥70/75dB, ≥20dBm, 100 users, 1000m², 4 antennas, Yagi included | Half area and users, seven dBm less output, four antennas, same gain tier |
| CG2000 | Band 20 + Band 8 | O2/Vodafone 4G + 2G voice, ≥70/75dB, ≥27dBm, 200 users | 2G circuit voice instead of all-network 3G |
| CD2000 | Band 20 + Band 3 | EE+O2/Vodafone 4G, ≥70/75dB, ≥27dBm, 200 users | 4G only; no 3G fallback or dedicated call band |
Against the CW1000, the CW2000 doubles coverage to 2000 m² and doubles users to 200, keeps the same 70/75 dB gain tier and the same Band 20+1 services, but raises output by seven decibels to about five times the field and supports ten indoor antennas instead of four. The CG2000 pairs 4G with a 2G voice circuit on Band 8 for O2 and Vodafone rather than the all-network 3G layer; the CD2000 keeps 4G families but carries neither 3G fallback nor a call band. A business that wants both 4G data and 3G redundancy for EE, O2, Vodafone and Three across a multi-floor enterprise premises chooses the CW2000; a business that mainly needs O2/Vodafone 2G voice considers the CG2000, and a 4G-only site considers the CD2000.
Honest Limits: 2G, 5G and the 2000m² Estate Boundary
No 2G voice on Band 8 or Band 3
The CW2000 does not tune the 900 MHz Band 8 or 1800 MHz Band 3 2G circuits. An EE 2G-only voice call, an O2 2G legacy call, and a handset that has fallen back to 2G after losing 4G and 3G see that path unboosted; tenants running legacy feature phones, alarm dialers or legacy POS on 2G should plan those separately rather than assuming the repeater covers them.
No 5G layer
The unit does not amplify 5G NR bands, including the 3.5 GHz n78 band used in UK urban 5G; a business needing 5G speeds, network slicing or a dedicated 5G premises system needs a different platform. It is a 4G plus 3G redundancy booster for existing UK macro networks, not a 5G small cell.
2000m² is one building, not a whole estate
The rating covers up to 2000 m² within one HQ building, hotel wing, warehouse, mall or retail premises; separate blocks, a campus with multiple buildings, spread-out industrial outbuildings and a large chain estate across multiple units each need their own donor and antenna system. Beyond that boundary, splitting one chassis further degrades every zone rather than extending the estate.
Regulatory marks: Ofcom licence-exempt, UKCA, CE, RoHS
The CW2000 operates under Ofcom's licence-exempt repeater class for equipment that does not interfere with the macro network, which is why no individual site licence or fee applies to a compliant install. UKCA confirms conformity with UK product requirements, CE marks the EU directive alignment, and RoHS restricts hazardous substances in the electronics. Installers must keep the 10 m antenna isolation so the stage does not feed back onto the mast, mount the Yagi pointing at the donor rather than repeating another indoor repeater, and follow the vendor's installation guidance; operating outside the licensed class or causing interference could require the unit to be removed.
The watt read: the CW2000 pairs the 832–862 / 791–821 MHz Band 20 4G LTE layer with the 1930–1990 / 2110–2180 MHz Band 1 3G UMTS data and voice layer for EE, O2, Vodafone and Three across a 2000 m² headquarters, hotel, warehouse or mall; the ≥70/75 dB gain matches the CW1000 flagship tier, and the real flagship jump is the ≥27 dBm output, seven decibels above the CW1000, about five times the radiated field, which survives splitter loss to reach ten whips and 200 handsets. It rides every leased MVNO brand on its host's two bands, keeps a 3G call alive when 4G drops, amplifies VoLTE where the phone and host support it, but leaves 2G Band 8 and Band 3 to the CG2000, carries no 5G, and holds a licence-exempt, UKCA, CE and RoHS-approved rating for one compliant enterprise building rather than a campus.
Frequently Asked Questions
Which two paired bands make up the CW2000 radio chain for a 2000m² HQ, and what service rides each?
Band 20 pairs 832–862 MHz uplink with 791–821 MHz downlink and carries the four hosts' 4G LTE data; Band 1 pairs 1930–1990 MHz uplink with 2110–2180 MHz downlink and carries the same hosts' 3G UMTS data and voice fallback. The Yagi brings both donors in and the ten whips radiate both layers to the 200-user field.
On a 21,528 ft² multi-floor site, why does the 800 MHz layer still decide where the 4G desks and tills work?
Lower-frequency 800 MHz radio bends around obstructions and passes brick, concrete, racking and drywall with less loss than a higher band, so it is the layer that reaches upper floors, warehouse bays and mall aisles after the Yagi locks on; a higher 4G layer would lose more of that structure, which is why the enterprise donor plan starts from the Band 20 mast bearing.
When the 3G bearer carries a voice call down a warehouse aisle, how does that compare with the 4G data path on the roof beam?
The 4G data path rides the Band 20 800 MHz beam from the mast through the Yagi and chassis to the desks and tills; the 3G call rides the Band 1 2100 MHz fallback through the same chassis and whip chain, keeping circuit voice and low-bandwidth packet data alive when the 4G bearer drops between racking and aisles.
The gain figures match the CW1000 at 70/75dB, so where does the flagship's real jump come from for a two-thousand-square-metre premises?
Gain and bands are identical between the two; the CW2000's jump is output power, coverage and antenna count: 27 dBm instead of 20 dBm, 2000 m² instead of 1000 m², 200 instead of 100 users, and ten instead of four indoor antennas. The higher field survives splitter loss across the extra zones rather than a higher gain stage.
In power terms, what does +7dBm over the CW1000 mean for ten whips and 200 handsets?
Each three decibels roughly doubles power, so seven decibels approaches five times the CW1000's radiated field; that margin pays for the branch loss in stacked splitters to ten antennas over ten zones, so each whip still reaches a solid reading for 200 handsets instead of going light after the first few divisions.
Which leased O2 and EE brands inherit both amplified 4G and 3G layers on this chassis, and which Vodafone SIMs land on each leg?
The O2-leased giffgaff, Tesco, Sky and Lycamobile handsets inherit both Band 20 4G and Band 1 3G; the EE-leased Smarty, iD, ASDA, Plusnet, Virgin, T-Mobile, Orange, FreedomPop and The People's Operator handsets inherit both layers too; Talkmobile on Vodafone receives both, while Lebara and TalkTalk on the Vodafone fallback-only list inherit only the Band 1 call leg, provided the local donor mast serves that host's band at the site.
Which two budget brands sit on the Vodafone fallback-only leg, and how should an enterprise SIM procurement list them?
Lebara and TalkTalk ride the Vodafone fallback-only list: the CW2000 amplifies their Band 1 call leg but makes no Band 20 4G claim for them, so an HQ, hotel or retail pool should list them as voice/fallback SIMs and pair the check with the local donor bearing before committing the contract, rather than promising them 4G on every desk.
If a guest or staff handset runs Voice over LTE, how does the CW2000 path differ from a 3G circuit call, and what is not added to the phone?
Where supported, the VoLTE call rides the Band 20 4G packet bearer that the chassis amplifies; without VoLTE the call steps to the Band 1 3G circuit layer. The unit cannot add VoLTE to a legacy phone that never had it, and it does not change the handset's radio capabilities or host subscription; it only amplifies the bands the mast transmits.
Which legacy and next-generation services remain outside this chassis on a hotel, mall or HQ?
Band 8 900 MHz and Band 3 1800 MHz 2G circuits are not tuned, so legacy feature phones, alarm dialers and 2G POS stay unboosted; 5G NR bands such as n78 are also outside the chassis, so a business needing 5G speeds or a dedicated premises small cell requires a separate platform rather than this booster.
Beyond Ofcom, which three conformity marks accompany the licence-exempt rating, and what footprint does the 2000m² rating exclude?
UKCA confirms UK conformity, CE marks the EU directive alignment, and RoHS restricts hazardous substances, alongside Ofcom's licence-exempt class for a compliant non-interfering install. The 2000 m² rating covers one building: separate blocks, campus buildings, spread-out outbuildings and multi-unit stores each need their own donor and antenna system.
Learn More: CW2000 Guides & Comparisons
Best 3G+4G Signal Booster UK (2000m² Enterprise) — 2026 Guide
How to choose a Band 20+1 2000m² booster giving EE/O2/Vodafone/Three 4G data and 3G calls at £935.00 with the Yagi included for HQs, warehouses and hotels.
CW2000 vs CW1000 vs CG2000
Honest UK comparison of Band 20+1 (2000m² 200-user ≥27dBm Yagi-included) against CW1000 (1000m² 100-user ≥20dBm) and Band 20+8 O2/Vodafone 2G voice at £935.00.
Mobile Booster Installation Guide (2000m² Enterprise)
Yagi mast aiming, 10m+5m cable routing, multi-way splitter 10-antenna expansion, 200-user testing and troubleshooting for UK multi-floor premises.
Band 20+1: 4G & 3G All-Networks Explained
Why 4G rides Band 20 (800MHz) and 3G fallback rides Band 1 (2100MHz), and how the CW2000 enterprise dual-band matrix delivers both across 2000m².
Article Keywords
CW2000 Band 20 + Band 1 explained UK enterprise flagship, 800MHz Band 20 4G LTE data 832-862 uplink 791-821 downlink, 2100MHz Band 1 3G UMTS data and voice 1930-1990 uplink 2110-2180 downlink, EE O2 Vodafone Three 4G and 3G all networks 2000m² corporate headquarters large office hotel warehouse shopping centre industrial park, ≥70dB uplink ≥75dB downlink gain shared flagship tier with the CW1000, ≥27dBm output the highest in the CW series seven decibels above the CW1000 about five times the radiated power, ≤5dB noise figure, high-gain Yagi directional aerial included, 3dBi whip, stacked multi-way splitters up to ten indoor antennas 200 simultaneous users, giffgaff Tesco Mobile Sky Mobile Lycamobile Smarty iD Mobile ASDA Mobile BT Mobile Plusnet Virgin T-Mobile Orange FreedomPop The People's Operator MVNO host mapping, Lebara TalkTalk Vodafone fallback only 3G leg, 3G UMTS fallback when 4G unavailable, VoLTE calls where the handset and host support it, honest limits no 2G voice Band 8 900MHz Band 3 1800MHz no 5G, Ofcom licence-exempt UKCA CE RoHS conformity marks, CW2000 versus CW1000 two times area users seven decibels output ten versus four antennas same 70/75dB gain tier, CW2000 versus CG2000 Band 20+8 2G voice versus CD2000 Band 20+3 4G only
