Browsing Category

Biblioteca

Biblioteca

AC-4 – 41757 – MARIO – UPGRADE …

on
11/02/2019

Upgrade AC-4 , step by step …
 

     

Biblioteca Officina

DRAKE POTENTIOMETER

on
02/01/2019

POT IN AC-4  –  R-4C  –  T-4XC  –  TR-4C

 

 

2 TR-4C original 200 OHM S-METER ZERO, with 250 OHM 45-series

Biblioteca Officina

DRAKE -4C PTO RUBBER SLEEVE ! “GOMMINO” VFO DRAKE SERIE -4C !

on
27/12/2018

Replacement Rubber Sleeve.
This rubber sleeve slips over the C-Line PTO shaft located behind the main tuning knob and dial
skirt. The old rubber sleeves often become hard and non-pliable.
PICCOLO DETTAGLIO … MA…

Biblioteca

µTracer 3+

on
22/12/2018

The uTracer is a small and affordable tube tester – or better a tube curve tracer – which measures all the
important tube parameters and tube curves just the way…

Biblioteca Officina

TR-4C SCHEDE TECNICHE

on
11/11/2018

TECHNICAL BULLETIN AND SERVICE BULLETIN
5-8 TR-4C CALIBRAZIONE A CRISTALLO

5-9 TR-4C OSCILLATORE 9 MHZ

5-10 TR-4C OSCILLATORE DI INIEZIONE A CRISTALLO

5-12 TR-4C ACCOPPIATORE DI INIEZIONE

5-13 TR-4C IF DEL RICEVITORE

5-14 TR-4C MODULATORE…

Biblioteca

… altro che CR7 !!! CR2 & CR3 Schottky

on
29/06/2018

Migliorare il Product Detector R-4C !!!
Studio e preparazione – modifica a CR2 e CR3 – sostituendo 1N270 con Hewlett Packard HP 5082/2800 HP5082/2805 (mached 4) Schottky.

 

 

***…

Biblioteca

Drake R4 series cabinet paint

on
07/03/2018

Drake R4 series cabinet paint

POLANE® T  Polyurethane Enamel
WA5VGO on September 02, 2015
Original paint was a two part process using Sherwin-Williams Polane T polyurethane enamel.
W9GB on September 02, 2015
Gunsmiths use that Sherwin-williams product. Last time…

Biblioteca Officina

DSP IN YAESU FT817

on
24/02/2018

The FNDSP
This filter project is a uniquely designed digital audio filter incorporating seven user selectable
bandwidths combined with a digital noise reduction filter offering nine user selectable levels.
The noise reduction…

Biblioteca

HARBACH – L-4B – KIT

on
12/02/2018

MOD ES4L-4B-v1.0

ES4L-4B-v1.0