# [amsat-bb] Re: Life Members

Stephen E. Belter seb at wintek.com
Sun Jan 17 11:52:18 PST 2010

```Glen,

When I use your calculator, I get Tony's results (\$277.17).  The following is copied directly from the web page results using initial year "1970", initial amount "50.00", and desired year "2009":

"Current data is only available till 2008. In 2008, \$50.00 from 1970 is worth:   \$277.17  using the Consumer Price Index"

What numbers are you using with the calculator?

I followed up with a "sanity check" on the numbers to make sure the results are reasonable.  The \$277 figure corresponds to an average compounded annual inflation rate of 6.3% over 28 years.  Your \$3300 figure corresponds to an average compounded annual inflation rate of 16.1% over 28 years.

\$50 * (1+0.063)**28 = \$276.63
\$50 * (1+0.161)**28 = \$3,267.93

Since I don't believe we've averaged 16% annual inflation for the past 28 years, I believe the \$277 is closer to the right answer.

Steve, N9IP
--
Steve Belter (seb at wintek.com)

> -----Original Message-----
> From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
> Behalf Of Glen Zook
> Sent: Sunday, January 17, 2010 1:55 PM
> To: Amsat BB; Anthony Monteiro
> Subject: [amsat-bb] Re: Life Members
>
> If you use the calculator that I referenced you will come out with the
> figures that I quoted.  There are several ways of measuring the worth and
> those are shown on the calculator.  Using the consumer price index as the
> basis the figures are correct.  Using other things as the basis you will
> definitely come up with different figures.
>
> Glen, K9STH
>
> Website:  http://k9sth.com
>
>
> --- On Sun, 1/17/10, Anthony Monteiro <aa2tx at comcast.net> wrote:
>
> > From: Anthony Monteiro <aa2tx at comcast.net>
> > Subject: Re: [amsat-bb] Re: Life Members
> > To: "Glen Zook" <gzook at yahoo.com>, "Amsat BB" <amsat-bb at amsat.org>
> > Cc: aa2tx at comcast.net
> > Date: Sunday, January 17, 2010, 11:27 AM
> > At 12:03 PM 1/17/2010, Glen Zook
> > wrote:
> > > ...
> > > Based on the consumer price index, the \$50 that I
> > spent for my life membership back around 1970 is today the
> > equivalent of right at \$3300!  That is 66 times in
> > "absolute dollars".  Compare that to the present life
> > membership fee of \$880.  That means that we who
> > obtained our life memberships back in the early 1970s paid
> > 3.75 times what new life members are paying.
> > >
> > > If you don't believe these figures then do the
> > calculations on the following website:
> > >
> > > http://www.measuringworth.com/uscompare/
> >
> > ...
> >
> >
> > Hi Glen,
> >
> > AMSAT needed the money back then but I don't think
> > your math is correct. \$1 in 1970 is equivalent to
> > around \$5.50 - \$6.00 in todays dollars depending
> > on how you compare it.
> >
> > Using the "Measuring Worth" web site, the CPI
> > equivalent value of \$50 in 1970 is \$277.17
> > in 2009 dollars.
> >
> >
> > 73,
> > Tony AA2TX
> > AMSAT VP Engineering

```