From: Mike Curtis <;>;
Date: Fri, 3 Nov 1995 13:15:26 -0800 (PST)
Subject: Re: Wireless/batteries

>; I use a Nady 201 which I cut the male 1/4" and put a female plug on. I then
>; can use any high impedance mic I want with it and run into an amp. I wasn't
>; able to tell the differance between cord or wireless and it has worked fine.

I wouldn't recommend "cutting" the cable. There's a small RF bypass
capacitor at the connector that needs to be reinstalled if you change the
connector. Also, the cable is used as an antenna, and is tuned. Any change
in length can affect radiated signal strengh, perhaps drastically, and may
necessitate transmitter realignment for maximum output.

>; I recommend rechargeable batteries. I use two nine volts a night.

Typical disposable batteries, such as carbon-zinc ("regular" batteries) and
alkaline are 1.5 volts per cell. NiCds are only 1.2 volts at full charge
under load. A 9 volt battery is made up of 6 cells; and most batteries of
that size use 6 cells, ergo most rechargeable "9 volt Nickel Cadmium" (NiCd)
types are 7.2 volts. Also, many are low capacity - I've seen some as low as
40 mAh (e.g. Radio Shack). The Nady Wireless One (what I use) requires 7.0
volts, and 7.2 isn't really sufficient for optimal operation.

The ones I use are 8.4 volts, and 150 mAh. They last all night, and put out
almost identical power to a 9 volt alkaline battery. even though the 8.4
voltage is higher than the typical 7.2 volts, they still recharge just fine
with a standard NiCd charger.

There are 9.6 volt NiCds available, but these require a special charger.

I use one per day - they last me around 6 hours or more. I _try_ to
remember to turn off the transmitter between sets, but I often forget.

It's good to periodically discharge NiCds until the LED on the transmitter
comes on (indicating low voltage). I don't recommend COMPLETELY discharging
them (like leaving them on overnight), as this can reverse charge weak cells
and trash the whole battery. Also observe the recommended charging time for
your charger, and don't leave the battery in the charger much longer than
recommended (i.e. all week, etc.). If it feels warm, it is being damaged
(heat dries out the battery electrolyte) and won't last as long. If you
can't babysit the charger, a timer is helpful - but get one that shuts off
permanently as opposed to one that turns on and off each day.

I carry a spare alkaline, just in case, and occasionally cycle it into other
equipment, keeping a fresh one handy. They have a "shelf life", and are
constantly slow-discharging due to internal resistance. Also, heat
accellerates their demise, so the glove compartment of your car parked in
the sunlight during the summer is not the best place for them.

-- mike

[Previous Message[Next Message]
[Next in Thread]
[Start of Thread][End of Thread]


Buy the Book!

I cleaned up my tab for Sonny Boy's Help Me and made it into a short book. There's a Kindle version for 99 cents, and if you buy the paperback you get the Kindle free.

Playing "Help-Me" In the Style of Sonny Boy Williamson II: A step by step, note for note analysis of some of Sonny Boy's Signature Riffs

I also write Science Fiction, so you can sample some of my best stories. Also available in Kindle format.

Error Message Eyes: A Programmer's Guide to the Digital Soul

MXR M68 Univibe Chorus Vibrato Pedal

End Date: Sunday May-19-2019 8:56:47 PDT
Buy It Now for only: $129.99
Buy It Now |
Matthews Effects Chemist Octave, Chorus or Phaser Pedal

End Date: Sunday May-19-2019 9:04:02 PDT
Buy It Now for only: $199.99
Buy It Now |
Ibanez Chorus Pedal CS-505 18volt Vintage Effects Pedal Early 81

$110.00 (0 Bids)
End Date: Sunday May-19-2019 9:20:39 PDT
Bid now |
JOYO JF-37 ANALOG CHORUS Electric Guitar Effect Pedal with True Bypass T8D5

End Date: Sunday May-19-2019 9:30:20 PDT
Buy It Now for only: $30.77
Buy It Now |
Mooer Ensemble King, analog chorus micro pedal

End Date: Sunday May-19-2019 9:42:21 PDT
Buy It Now for only: $54.08
Buy It Now |


The JT30 Page Popular links

I began collecting data about the microphones used by blue harp players before there was an internet. I began organizing it into in the late 1990s. I accumulated more stuff than I remember. This is some of it.

Street Theory

A Harp Player’s Guide to Music Theory

Learning Harp

Picking Up Blues Harp

A guide to learning to play Blues Harp

Microphone Information

Usenet Articles

Harp Amps

I've been collecting Harp Amps for a while. This is the old website. There is lots of information here. Here a coupld of links.

Harp Tab

A collection of songs and riffs that I’ve worked out over the years, plus some libraries of stuff I’ve converted to tablature. I’ve included most of the notes and instructions that helped me when I was learning to play blues harmonica.

Basic Riffs Simple harp tabs for songs Blues riffs and phrases.

Harp-L Archives 1992 to 2002


Harp Frequently Asked Questions