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And here's one of the cards. The two 8-pin chips have datemarks 7415 and 7417—so they were manufacured in the 15th and 17th weeks of 1974. I think they're just operational amplifiers, not logic. I assume this is an amplifier.

フレッツ Adsl モアスペシャル用のモデムが届きました。左端のでかいのがそれ。でか過ぎない? 真ん中のは24m 用で、近々返却します。右のグフ色のは、24m にする前に買い取りしたモデム。

Hayes 56k Speakerphone Modem

C'mon little green light. Shine!

unlocking iPhone 3G firmware 2.2.1 & Modem firmware 02.30.03 This version Renews Network Key Automatically with REBEL Advanced IMSI handling & instant renewal on all operator networks, NO NEED to take out your simcard anymore to renew Network key..

ONLY REBEL SIM FIND THE NETWORK AUTOMATICLY

- Support for iPhone 3G firmware 2.2.1 & 2.2

- Support for iPhone Modem firmware 02.30.03

INCOMING & OUTGOING CALLS WORKS

SMS MESSAGE WORKS

 

WITH REBEL SIM YOU WILL NOT VOID THE WARRANTY OF YOUR iPHONE 3G

DONT INSTALL UNLOCK SOFTWARE OR MAKE A JAILBREAK - IT VOID THE WARRANTY

- Advanced IMSI handling & instant renewal on all operator networks. Renews Network Key Automaticaly.

- Support for iTunes on iPhone in 3G mode without WiFi.

 

- Support for Apps Store on 3G, without WiFi.

- No iTunes Sync or Airplane mode issues.

- GPRS/EDGE & Voice support for all 2G networks worldwide.

100% GENUINE REBEL SIM

  

- Data & Voice for 90%+ 3G Networks worldwide.

- Network Operator STK menu support.

- Network Access routines improved and rewritten.

- Simcard Access routines improved, will now support more network simcards.

  

* REBEL SIM unlock any cards and providers worldwide

 

* NO SIGNAL LOST (only REBEL SIM will find the signal automaticly)

* NO JAILBREAK

* NO SOFTWARE UNLOCK

* FAST AND EASY

  

* PLUG & PLAY SIM works in few minutes + Manual

 

* NO CUT - DONT NEED TO CUT YOUR SIM ANYMORE

 

* THE ONLY ONE SIM CARD THAT UDATEABLE WORLDWIDE!!! if there a new firmware comes out u can update via a usb programmer the rebel sim, so you dont need to buy a new unlock sim anymore.

Daily Shoot: Make a photograph that illustrates an aspect of communication.

10 years in technology is surely a bygone era. Front door to the digital, the modem has become indispensable for anyone who wants to explore the world.

 

10 ans en technologie c'était il y a longtemps, une époque révolue, l'époque Baroque ! Porte d'entré sur l'ailleurs numérique, le modem est devenu indispensable pour qui veut explorer le monde.

Chek • Choq • Modem (Ivry-sur-seine, 06/2017)

How the Internet travels to get to here. AKA, the last mile.

Hayes 56k Speakerphone Modem

Modem Broadband IM2 3.5G

The first apartment that Cari and I lived in after we moved from Idaho to Kennewick, WA. This is the room where @U2 was born, now that I think about it.

The server room. Formerly my bedroom.

PARIS 19ème - avril 2021

Popular in the 1970's the acoustic coupler was a device that allows a computer to connect to other computers. The first acoustic couplers connected to the phone handset and transmitted at a speeds of 300 baud as analog sound signals that were transferred to digital by the acoustic coupler.

 

I just wish modern broadband modems came in wooden boxes!

 

Don't forget to checkout www.retrocomputers.eu for more info about my retro computer collection.

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