(Warning:Keith is not a real expert, he's just the guy with the website and too much time on his hands, so don't take anything he says as gospel.)

>I have purchased an astatic mic...It just says model 30 not JT 30 (I also
>have a JT 30). The cartridge inside says Dec 41, the cord is a fabric
>covered with a leather cover over that, no screw on adapter just the cord
>and a rubber grommet and screw holding it into the mic head with two prongs
>on the other end.....never seen a plug like it!!!!
>It is brown (bullet and grille), but my guess is it has been
>repainted. Any idea what colors Model 30s came in and did the Model 30
>precede the JT 30? Any information will be greatly appreciated. By the
>way, the replacement I ordered from Erica works just fine in my
>JT 30. Thanks. And please thank her as well.



A 1941 JT-30 would have said Model 30. I have a brown one from that time that was used by the Military. The company name isn't Astatic Corporation, but Astatic Labs. This is before they moved to Connaut Ohio. At the time the military mics were brown and the others were gray or gray Hammertone. The military mics did not have a chrome grill.

Nice find! The older ones are worth more than $150 in good condition, but they rarely are in good condition. I don't like to modify the older ones - it seems a shame to mess with them when they are so old and the new ones are easy to find.

Find one of the old Astatic mic stands on Ebay and put it on your shelf as a presentation piece. I might strip the paint and sand it a little to get rid of the dings and then repaint it the same color. The JT-30 grill is a work of art and they look like a little modern art sculpture when you mount them.




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

ART Tube MP/C Pre-Amplifier/Opto-Compressor-Limiter Project Series

End Date: Friday May-24-2019 10:14:35 PDT
Buy It Now for only: $133.15
Buy It Now |
Vintage Fender Squier Guitar Amplifier Logo Plate Part for Project Upgrade

$4.99 (0 Bids)
End Date: Friday May-24-2019 12:14:48 PDT
Bid now |
Lot of 10 Vintage Guitar Amp Pedal 1 1/8" Knobs for Project / Repair

$7.49 (0 Bids)
End Date: Friday May-24-2019 13:13:25 PDT
Buy It Now for only: $10.00
Buy It Now | Bid now |
Replacement Amplifier OEM Peavey 6505+ 112 Guitar Amp Parts Project U-fix

$1.25 (2 Bids)
End Date: Friday May-24-2019 16:29:13 PDT
Bid now |
Rogue G10 Electric Guitar 10 Watt Practice Amplifier Parts Project U-fix #0714

$10.99 (0 Bids)
End Date: Friday May-24-2019 16:39:27 PDT
Bid 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 JT30.com 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 Harpamps.com 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