[Test-Equipment] Estate Sale
Walter Treftz
sjotrollet at yahoo.com
Tue Jul 5 12:14:23 EDT 2011
Following items are offered from a local estate we're helping with. Most of the items I know nothing about as I ham only on the lower freqs and CW.
Deceased was deep into radio astonomny, satellites, microwaves, etc. Pictures available. Use the number, like "47)" on left end of top line for each item when requesting pictures or info. If interested, make a reasonable offer.
73
Walt (N4GL)
47) High Voltage Test Probe
Pomona model 2900A. With case. Good condition. Meterreads 0 - 30 kvdc.
Tested on 2 kv supply (linear amp)(highest available voltage here) and
reads OK. Meter movement 20k ohms/volt. 600 mohm 2% resistor in
probe. Case lid slightly warped but still good. This is a "stand alone"
voltmeter (does not need a VOM/VTVM but measures HV directly).
742) Attenuation Network
Daven type VT-795G step attenuator. 600-ohm impedance. Controls in decibels. 0 - 100 in 10db steps, 0 - 10 in 1 db steps and 0-1.0 db in 0.1 db steps. All are
in series so can select to nearest 0.01 db between 0 and 111 db steps.. Banana plug terminals for INPUT, OUTPUT and C and G. Continunity checked OK by ohmmeter. Interior like new but case in only fair condx. At some point it appears it was sitting beside something that rusted (causing corrosion on one end of case). Case could use refinishing. Labeling on front panel is engraved so repainting them should be easy.
>From an estate and untested (no lab standard gear here).
743) 220 mhz Signal Generator
Waltham Electronics Corp. model 107 signal generator. Freq range 200 - 270 mhz. FM (deviation: variable ranges 0-30, 0-150 and 0-300 khz in 3 ranges). Output into 50-ohm (BNC connector) is variable 0.06uv (-140dbm) to 100,000uv (-10dbm). External modulation input plus internal LINE and 1000 Hz. Deviation variable -300 to +300 hhz. Meters read 0-150/0-300 Khz deviation and RF OUTPUT SET TO RED LINE (scale from -1db to +1db). Used. Untested, from an estate of a ham that was deep into 2m and 220 mhz repeaters. Pictures available. Unmodified but missing AC cord. Cosmetically
front panel good but case fair (paint flecking off), no dents, gouges, etc. Front handles rusty. Untested but brought up slowly on Variac. Tubes light, no smoke. Unable to test further as no 220-225 mhz gear here or activity in this area. Unpacked Wt: 45 lbs
744) S-Band UHF Signal Generator
Hewlett-Packard model C25-8614A signal generator. 800 to 2400 mhz. Used, untested. from an estate. Missing AC cord and plug/socket. Variable freq (mechanical digital readout) Variable attenuation (mechanical digital readout) 60 - 0 - 130db. Front panel controls: ALC CAL OUTPUT, Var freq minus - zero - plus. Square Wave Freq, Frequency & Atten of RF output, selector buttons for LINE, RF, Internal ALC, Square Wave, External PULSE, ALC, FM (with BNC connectors for inputs). Rear connectors: RF POWER OUTPUTS for CAL & UNCAL, FM, EXT FM INPUT, INPUT REMOTE LEVELING. Operates on 115/230 vac. Unmodified, good physical condition. Unable to test locally. From estate of ham deep into radio astronomy, S & Ku band satellite TV, microwaves, UHF/SHF/EHF experiments. Pictures available.
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