1. PCTEL: Performance Critical DAS Line

2. Agenda: PIM Review – Why we need to mitigate it What is our DAS line RIGHT NOW? How do we sell it? – PCTEL Advantage – No carrier specific approval yet – Can we get around it? – Who is the target customer?

3. What is PIM? Passive intermodulation (PIM) is the generation of interfering signals caused by mechanical components of a wireless system. This causes two signals to mix together and produce signals within the same band, causing interference.

4. PIM and Mobile Devices Cellular networks are particularly vulnerable to PIM for a couple of reasons: They are high power There are often multiple carriers at very close frequencies in close proximity to each other The devices linking back to the cell are very low power, creating a need for a high receive sensitivity

5. 5 Negative Effects of PIM Higher noise floor Interference – Decreased capacity – Interfering signals act as mobile devices – Decreased coverage area All add up to needing more base stations and cells = BIG DOLLAR$!

6. 6 Visual Example: The PIM Problem SCREAM Whispers PIM Products look like mobile devices!

7. 7 Loose connections Corrosion Metal debris Improper materials – Paramagnetic materials cause PIM – Improper dielectric materials – Poor plating/plating materials What Causes PIM

8. 8 DAS Line Available Today DAS Portfolio 2/1/2015 PCTCMHD OLTE7027S-I OLTE7027SPT-I SLTE7027SPT-I

9. 9 PCTEL Advantages Other than PCTCMHD Aren’t these “Me Too” Products? – Yes. These are not new concepts or ideas, but they have their own advantages Value Line – Some of the most inexpensive yet effective PIM rated antennas on the market! – OLTE7027SPT(N)-I or OLTE7027SPT(N)-I – SLET7027SPT(N)-I or SLET7027SPT(N)-I Mounting – Ceiling tile AND sheet rock mounting Mini DIN options – Likely to be a VZW requirement Availability – Stocked locally, shipped quickly

10. OLTE7027S-I DAS omni with 690MHz - 6GHz Range Mounting for ceiling tiles or sheet rock (Important for hospitality!) Bulkhead direct connection $69 List price Available and in stock now Mini DIN option coming soon

11. OLTE7027SPT-I DAS omni with 690MHz – 2.7GHz Range Mounting for ceiling tiles only Plenum Pigtail $41.53 List price (N Connector) $43.53 List price (Mini DIN) Available and in stock now Mini DIN and N Options both in stock Alternative to CommScope p/n CELLMAX-O-CPUSEI

12. SLTE7027SPT-I DAS directional (sector) with 690MHz – 2.7GHz range Mounting for ceiling tiles only Plenum pigtail $60.17 List price (N Connector) $62.17 List price (Mini DIN) Available and in stock now Mini DIN and N options both in stock Alternative to CommScope p/n CELLMAX-D-CPUSEI

13. PCTCMB DAS omni with 690MHz - 6GHz Range up to two WiFi elements IP-67 when mounted on IP67 Enclosures Multiple low PIM pigtails No list price Available now with minor tweaks (custom for part for now, no IP) Perfect for stadium, transit and other semi outdoor venues

14. The Elephant in the Room... These products are not yet carrier certified Many other DAS SISO omnis and sectors are already approved by the big 4 – they don’t have a current need to approve ours – If we push through certain integrators etc. we may gain approvals – Other products are being developed that will be needed Many Installs are not funded by carriers. They do not require carrier approval on all equipment We must alter our target customer to see success

15. Our Current Target Customer Though it may change when we get more approvals, our target customer is different than Commscope’s for now – We will not sell to Crown Castle, AT&T, Verizon, etc. with our current product line – We need to sell to different types of integrators who don’t have carrier funding up front Many S/Is sell whole systems or sell to building owners – SAC, Extenet, Acela, etc. – They are major DAS players, with major accounts End Users – If it is not funded by a carrier up front, it does not need to be on their “drop down list”

16. Thank You!

17. If you have any other questions or comments, feel free to call or email us and we will get answers to you right away. Ben Bishop (708) 465-5033 ben.bishop@pctel.com Faye Vorick (630) 233-8012 faye.vorick@pctel.com Questions and Comments:

18. And for the Tech Nerds... (Like Me!) Transmit (Tx) Band Receive (Rx) Band PIM interference

19. PIM Math (Reference Slide) PIM is only a problem in systems with close uplink and downlink frequencies, or close to double. Here is why: F1 and F2 are the frequencies of the 2 carriers where F1 and F2 are interchangeable. The orders equal the sum of the coefficients 2nd order PIM = F1 +/- F2 (1+1=2 Therefore 2 nd order) 3rd order PIM = 2 x F1 +/- F2 (2+1=3 Therefore 3 rd order) 4th order PIM = 3 x F1 +/- F2 or 2F1 +/- F2 (3+1=4, 2+2=4, 4 th Order) 5th order PIM = 3 x F1 +/- 2 x F2 etc...