Icom IC-471A
http://www.universal-radio.com/catal...ulti/471a.html

Icom IC-471A/E/H Service Manual
http://www.ko4bb.com/manuals/index.php?dir=ICOM

Assuming the internal DC voltages are stable (well regulated),

You have a component (resistor, capacitor), in the squelch circuit, that is changing value.
This value change could be a thermal (heat) issue OR a leakage issue (capacitor).

Standard troubleshooting with service manual, schematic diagram and
bench test equipment required.

==
w9gb

M -

I have the Lenmar Rapid Charger R2G804U, four cell AA battery charger with USB charge port.
Eneloop was packaging this charger with Sanyo batteries a few years ago.

Rob -

Fox Tango International Yaesu Users Group web pages and documents should help.
These radios can be restored, BUT it requires patience and a love for the hardware.
http://foxtango.org/foxtango001.htm

Yaesu FT-101 web page
http://foxtango.org/ft101/foxtangoft101.htm

Carol Maher, W4CLM maintains that information at Fox Tango.

Carol can be contacted at Certified Electronics, Cartersville, GA
for further advice, assistance, or if you desire restoration.
PHONE NUMBER: 770-382-5835 (tel:770-382-5835)
http://www.eham.net/reviews/detail/6054?page=6

SHOP HOURS: Noon to 6pm EST, Monday through Saturday
RETURN AUTHORIZATION REQUIRED, before any radios are shipped to them.
http://certifiedelectronics.org/certifiedelectronics.htm

Radiart TR-2 Rotor Service Bulletin, 1954-1957 (Michigan State archives)
from COLFAX Company, South Bend, IN
https://www.msu.edu/~yurkon/Documents/radiart.pdf

Marvin --

You are witnessing Eneloop battery consumer/retail changes for multiple reasons,
since they were first introduced in 2005.

Where to Buy Eneloop Batteries
http://panasonic.net/energy/eneloop/wheretobuy/

Sanyo pioneered the production of nickel cadmium batteries in 1964,
nickel metal hydride batteries in 1990, lithium ion batteries in 1994, and
lithium polymer batteries in 1999.
In 2000, it acquired Toshiba's nickel metal hydride battery business, including the Takasaki factory.
http://en.wikipedia.org/wiki/Sanyo
===
1. Panasonic acquires Sanyo (2008-2012)

On November 2, 2008, Sanyo and Panasonic announced that they have agreed on the main points of a proposed buyout that would make Sanyo a subsidiary of Panasonic and a formal announcement of the acquisition was made on Sanyo's web site on December 19, 2008.
They became a subsidiary of Panasonic on December 21, 2009.

On July 29. 2010 Panasonic reached an agreement to acquire the remaining shares of Panasonic Electric Works and Sanyo shares for $9.4 billion.

By April 2012, parent company Panasonic announced plans to terminate the Sanyo brand, however it will remain on some of the products where the Sanyo brand still holds value to consumers.
===
2. Sanyo Eneloop - Multiple technology generations (2005-present)
http://en.wikipedia.org/wiki/Eneloop

Eneloop Global Product page - Panasonic
http://panasonic.net/energy/eneloop/
===
3. Global consolidation of nickel metal-hydride (NiMH) batteries.
http://en.wikipedia.org/wiki/Panasonic_EV_Energy_Co

Primearth EV Energy (PEVE) is the supplier of the nickel metal-hydride (NiMH) battery packs for Toyota’s hybrids, as well as for Honda (Civic hybrid and first generation Insight) hybrids.
The company also provides the NiMH prismatic battery modules for the General Motors 2-mode hybrids. The company currently offers only NiMH products.

The company was known as Panasonic EV Energy Co until 2 June 2010.
The company was formed in 1996 as a joint venture between Toyota and Panasonic, with Panasonic holding 60% of the capital.
Panasonic sold 40.5% of the company to Toyota as a condition of purchasing Sanyo. Panasonic decided to reduce its stake in Panasonic EV Energy Co to speed up approval from anti-trust authorities in China and the U.S.

The purchase of Sanyo gives Panasonic a market share of around 80% in nickel hydride batteries.

In early 2011, it is reported that Prime Earth EV Energy will start mass-producing lithium batteries for plug-in hybrids of Toyota at a factory in Shizuoka Prefecture, south of Tokyo, Japan.

The PL500 (27GB5) was an odd TV sweep tube, 27 volt filament, 9-pin Magnoval,
12 watts, and could handle a peak anode voltage of 7,000 Volts.
The PL500/PL504 seems to have been the most popular sweep tube for
Western European black & white TVs.

Tesla coil builders use it, due availability and price.
http://www.sciencezero.org/vasil/teslina/stdf.html

German mfg. (Braun) used the PL500 tube for audio amplifiers.
Then you get the current audiophiles, look at this photo (how many tubes?)
http://www.audioasylum.com/forums/otl/messages/3/34846.html

Side Band Engineers was ahead of the time with the SBE model 33:
Light weight (20 lbs), solid-state receiver (germanium transistors, as you noted),
and hybrid transmitter.

Cornell-Dubilier (North Carolina, Cleveland) sold some of the first consumer TV rotators in the early 1950s.
Alliance Manufacturing, based in Alliance, OH was a competitor in TV rotator market.
The Radiart rotors eventually became part of the Cornell-Dubilier Electronics (C.D.E) division.

The 1950s Radiart/CDR rotors (TR-2, TR-4) were FIRST generation designs -- NO braking included.
Radiart Corporation TR-2 Service Bulletin (rare 1954-1957 copy)
https://www.msu.edu/~yurkon/Documents/radiart.pdf

The CDE HAM series, introduced in 1957, added an early brake design for amateur radio owners.
This was improved upon in subsequent versions of the HAM series (see below).
http://victrolla.homeip.net/wo5s/junkpile/cde/ham-m/ham-m.pdf

Cornell Dubilier Electronics sold their rotor division to Telex/Hy-Gain in 1981.
Hy-Gain based in Lincoln, NE decided to support only the AR-22, AR-40, CD45-II, Ham-4, and Tailtwister rotors.
All rights to the other rotors were assigned to Norm's Rotor Service -
 that includes CDE documentation or parts for your CDE TR-2 rotor.

Norm's Rotors Service is the only facility with parts for the original units.
Norm's have almost all parts for the AR-22, AR-33, AR-40, AR-50,
BT-1, TR-44, CD-44, Ham-M, Ham-2, and Ham-3 rotors.
Telex/HyGain sold the HyGain line of rotors to MFJ in May of 1999 --
who still continues to manufacture HyGain rotors from their Mississippi facility.

Norm's Rotor Service or
http://www.rotorservice.com/index.htm

CATS (Rotor Doctor) are your best source for ANY documentation and parts from 60 years ago.
http://www.rotor-doc.com/

Frequently Asked Questions about USA manufactured rotators (Cornell-Dubilier, Alliance)
http://www.rotorservice.com/faqs.htm

Rotor Identification
http://www.rotorservice.com/serv3%20identify.htm

I have never had issues (Quality, Warranty, Availability) with batteries from these two USA companies (below).  
Both companies are major suppliers for UPS systems.
Let them worry about global plants and suppliers.

Yuasa Battery, Inc.
2901 Montrose Ave
Laureldale, PA 19605 US
P: 866-431-4784
http://www.yuasabatteries.com/about.php

Universal Battery (UPG)
488 S. Royal Lane
Coppell, Texas 75019
http://upgi.com/
Toll free : 866.892.1122
Office Main    : 469.892.1122
Fax : 469.892.1123
Email : sales@upgi.com

International Radio (INRAD) has new owners (since 1985) and located in Aptos, CA.
They have a wide selection of 8.830 MHz filters for the TS-430S.
http://www.inrad.net/home.php?cat=45

You can contact them for specifics about installation, or notes they may have from former owners.

Tom -

SECTION 6, page 20

STEP 9 : Move the connection as illustrated when an AM filter is installed.

The key wording: as illustrated is in reference to Figure 6-3 AM Filter Detail No. 2
at Lower right on that page.

The jumper is moved from point "S" to point "A" on the PC board.

To build a GIMMICK Capacitor for a 40/15-meter dipole,
This is described in recent ARRL Handbooks.

Identify the 1/2-wave point (for 15 meters) on the 40-meter half-wavelength dipole.
At this location, place the Gimmick capacitor.

The Gimmick capacitor is a 24" (2 feet) piece of antenna wire.
This wire is soldered into a Loop.  The Loop is then twisted to form a Figure-8.

The cross point of the Figure-8 is attached to 15-meter 1/2-wave point
previously identified on the 40-meter dipole.

==
William J. Lattin, W4JRW
Multiband antenna - December 1960 and April 1961 QST magazine
http://www.hamuniverse.com/lattin5band.html

Kenwood TS-430 Owner's Manual
http://www.usersmanualguide.com/kenwood/amateur_radio/ts-430s

Turn to page 20, Section 6-2 Installation of Optional Filters
Pictorials: Figure 6-1 and Figure 6-3 show proper jumper configurations.
===
Turn to page 10, Section 5.1.8 NAR-WIDE switch operation
The Passband Width Matrix table show all possible combinations.

IF a switch setting does not work -- CHECK to see if former owner properly jumped AM filter.
That would be on Page 20.

This is the Datasheet for Dialight 586 Series
Single Chip Based LED T 3 1/4 Miniature Bayonet (BA9s)
http://www.dialight.com/Assets/Brochures_And_Catalogs/Indication/MDEL586E001.pdf

#47 (T1-3/4) incandescent lamp (miniature bayonet base, BA9)
was used in many radio receivers/boatanchors.

Digi-Key stocks some Dialight LED replacements, BUT have not yet stocked the BLUE LED --
Part Number: 586-2405-201-ND used in Drake 4-line.

Mouser # 645-586-2405-101F (polarized version) -- not always stocked (10 week lead time).
http://www.mouser.com/ProductDetail/Dialight/586-2405-101F/?qs=sGAEpiMZZMsUguuR3b6UZog0PM3MQ6pgY3O0BU8MhYQ%3d

CINCH - Lug-Type Terminal Strips : Spec Sheet
http://www.alliedelec.com/images/products/datasheets/bm/CINCH_CONNECTORS/70152915.pdf

You desire the Cinch 56C strip

MCM Electronics
CINCH Part # 29F593
http://www.mcmelectronics.com/product/27-3960&scode=GS401&CAWELAID=220317611?catargetid=1545764029&cagpspn=pla&gclid=CJb51oX0oLYCFc9AMgodcU4AKg

Allied Electronics, 56C, part # 70152923
http://www.alliedelec.com/search/productdetail.aspx?SKU=70152923

2008 Retrofit to an MLA2500 amp using the Eimac 3CX800 ceramic triodes
done by Lawson, W4EMF
http://w4emf.gs35b.com/mla2500-retro-3cx800-2008/index.html

===
Tony King, W4ZT came up with a schematic diagram (July 2007) for converting the Dentron MLA-2500 to use TWO Russian surplus GI-7b ceramic triodes.
http://gi7b.com/mla2500/mla2500mod.pdf

W4EMF and K4POZ provided assistance and suggestion.
http://w4emf.gs35b.com/mla2500-retro-gi7/index.html

http://gi7b.com/mla2500/index.html

Modifications, in no particular order, that are shown on the schematic above:

GI-7B tube retrofit.
Cathode choke move from the ALC board to under chassis cathode connection.
Input coupling capacitor change.
Cutoff resistor and bias change. Adjustable Bias Board and bypass caps added.
Glitch resistor change from a fuse resistor to a true glitch resistor.
New grid shunt and protection diodes. Resistor value not specified on schematic.
New plate current shunt and protection diodes. Resistor value not specified on schematic.
Metering calibration resistors and pots added.
Harbach SS-100 Step Start module added.
Antenna Relay change to 3PDT Relay to allow keying the amp only after Antenna contacts are made. The third set of contacts is put in series with the bias keying relay and prevents hot switching the amp.
Filament transformer added.
Filament choke and bypass caps added.
New and added filter capacitors, equalizing resistors and reverse protection diodes added.
Dropping resistor in series with delay tube filament to make up for the unloaded filament winding. This value is found experimentally.
Meter switch changes to properly switch the metering and calibration.
===
Based on this work, other amateurs have successfully documented this conversion.

Dentron MLA-2500 GI7B Modification
by N3OC, February 2013
http://n3oc.dyndns.org/GI7B.htm