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keytops Home of the (Amateur Radio) RF Safety Calculator

Your e-mail doesn't get through? If you use, Yahoo, Gmail, etc. the number 1 reason is: 

TO_ADDRESS_EQ_REAL (To: repeats address as real name) 

In other words, make sure you give the recipient a real name and don't send to "fred@xyz.com" <fred@xyz.com>, instead send to "Fred Bloggs" <fred@xyz.com>. Send an e-mail to yourself and check it.

Number 2 reason: Sender uses a third-party service to mail-blast people, such as Constant Contact, SendGrid or Webex.


Hintlink Coming soon... user:demo passwd:demo

Your Host for MODx Wordpress.org NOT .com Joomla 

and other CMS                                       

The elements of ability











If you use, or change to, Verizon, you will need to move your SMTP port setting from 25 to 587

Confused by Internet Slang? Try looking it up here.

On-Server Calculators
Power Density Calculator (Amateur Radio) RF Safety Calculator
Pathloss Calculator
Simple Radio Horizon Calculator
Moxon antenna Calculator

 (Pathloss Program RFProp by Colin Seymour G4NNA)   Management

All you need to know about:

Scientific Units  Standard Date/Time format (ISO-8601:2004) [xkcdStandard Paper Sizes (ISO 216)

Standard Typographic units (font sizes)  Top Level Domains  Country Designations (ISO-3166)

IANA Port Numbers Copyright Law  Standard Lat/Long/Elevation format (ISO 6709)  Currency Abbreviations (ISO 4217) 

Where drug names come from  

Former and active member of following development groups:

Aeris devNet  EricssoneStore Developer    Sony Mobile Developer World (now Sony Mobile)    Cingular developer Forum Obsolete

 RIM Blackberry DevelopmentDevZone  Sprint - Nextel  Developer Program    Skype Developer Platform


Images used above are the property of the respective owners


Microwave comparator design using HP-HFSS (now Keysight EM Pro 3D) and microwave circuit design using HP-MDS (now Keysight RF and Microwave Design Software

Original designer of GB3SI (St. Ives, Cornwall, UK) and GB3WK (Royal Leamington Spa, Warwickshire, UK) 2m repeaters (inc. MC6502 and MC6522 based microprocessor logic c.1981)

RF deck: Icom IC-240 with disconnected PA and disabled tx/rx power switching.

US Patents held by Paul Evans:

Read Patent No. 6,393,346   GPS location logging device
Read Patent No. 6,115,655   GPS location logging & real-time reporting device

Trip Advisor status - Paul E

(c) Tripadvisor tripadvisor status - Level  Contributor
13,294 TripCollective Points.
36% USA, 11% France, 11% UK, 42% others


Expert Level
Readerships [110,145+]
reviews Top Contributor
votes Helpful reviewer
41 cities Passport
35 reviews Explorer (one of the first)
24 reviews Attractions 8
87 reviews Restaurants 29
18 reviews Hotels 6
6 reviews B&B and Inns

up to country squire 25
Certificate of Excellence

1 best of the best Travellers' Choice
Within the top 0.1% of Contributors on tripadvisor

<- Hello EPA, CARB and Judge Charles Breyer. I'm a 2011 Audi A3 TDI and I'm now worth $28,396.73 in the buy-back programme.

Thank you for approving the buyback programme on 2016-10-25

Now in production with a VIN, I'm a BMW 2017 X1 xDrive 28i - get lost VAG!

........ and The Worst Car in the World

Fortune of the Hour (UNIX)

Any father who thinks he's all important should remind himself that this country honors fathers only one day a year while pickles get a whole week.  


Automatically generated by the server every hour [content not controlled by Hintlink] 

Do it Right: Know thy user, for it is not you.

System Uptime: * 2:01AM up 908 days, 8:42, 0 users, load averages: 0.03, 0.01, 0.00 *

Time (UTC) when sampled, Uptime days, HH:MM, login users, CPU load averages (%) last 1, 5 & 15 mins


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