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Hosted by Tom O'Hara W6ORG - Email:
Retired owner of P.C. Electronics, The Leader in Amateur Television Equipment
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Surplus ATV Gear and Parts

Last Update March 1, 2017

        Mary Ann gave me orders to clean up the garage and ham shack - So please check back often and help me out. From time to time I will list here surplus personal Ham TV items that we have accumulated over the years and now have available to hams.
Email with your call in the subject line with questions or interest.

SCROLL DOWN for ATV gear or go direct to:
Parts and Semiconductors - Power Modules - Crystals - Connectors


Collectors Item - The original Kreepie Peepie ATV Transmitter

It all began with this 50-100mW Kreepie Peepie built from a TXA5 ATV transmitter and FMA5 sound board in a 4.7x7.4x2.2" die cast aluminum box to walk around local ham swap meets and do ham club demos. We found and dusted off the portable unit we first built up to demo our boards made for portable ATV, fired it up and it still worked!

If you were at the Dayton Hamvention in the early 80's you might have seen us walking around transmitting video back to our PC Electronics booth with it. Later we designed the all in one board 1W transmitter, KPA5, that were used at parades and races. The TXA5-70 board is two channel, but only 426.25 MHz is supplied. The $100 price includes USPS shipping in the USA.

The 10 pin jack matched the plugs used on the video cameras of the time, but we will include a matching plug if you want to make up an adaptor cable to RCA A/V phono jacks. Switches are Camera power, Transmitter on, Audio on and frequency. A coaxial jack is for 12-14VDC. BNC RF out jack on top. Can be connected through an attenuator to drive a higher powered amp like the PA5 below.


All boards come with parts soldered in as shown in the photos

TXTVb 420-450 MHz Band ATV Exciter/Modulator Board......$15, additional boards $10 - 4 left.

Great club or group project!
Transmit ATV over short distances as is, or add a linear amp.
Partially assembled and soldered board as shown, and kit of 12 parts for you to add - click on photo at right for full details.
Fully assembled and tested add $20 per board.
As seen on page 39 in the Winter 2006 ATVQ.

Make a low cost 70cm ATV transmitter or RF Test Generator for tuning up receivers or antennas. Demonstrate ATV at a ham club, Scout Jamboree, Field Day, etc., with this unit - transmit in the building to a cable ready TV set. This board puts out about 10 mW and uses the same crystals as found in all our 420-450 MHz ATV transmitters - order from International Crystal Mfg catalog #473370, Fo/4. The board comes partially built (as shown in the photo) and with all 12 of the additional parts as a kit to complete the board. Assembly and tune up instructions using a DC Voltmeter are included - download and see the data sheet by clicking on the board photo above. You can also build up a 25Wpep amplifier using the PA5 board and a RA30H4047M power module driven from the TXTVb board. Size is 4x2.25" - will fit in a Hammond 1590C or D die cast aluminum box - and takes 8 to 14Vdc at 40 mA.

If you have a 2 meter in / higher band out transverter like those available from Downeast Microwave, SSB and others, you can add the AM ATV mode with this board. Specify the transverter kit. We have a limited supply of crystals for 70cm ATV or 1265.0 (1268 MHz Transverter) or 1289.25 MHz (1296 MHz Transverter), or you supply the crystal (order from ICM catalog #473370 - 2 meter F/2 and HC-50 holder) for the frequency you want to end up with after mixed in your Transverter.


PA5 Linear Amplifier board... $15,
additional boards $10 - 22 left.

Build a 50mw in / 25 Watts p.e.p. out, 70cm linear all mode amp and drive from a Videolynx 434 or Z70A using this ready to mount 70cm power module board with all parts soldered in as shown, less power module, but including 6" RG-174 coax in and out pigtails soldered on - just add your power module, heatsink and chassis. The RA30H4047M power module is currently available from RF Parts for $40. You can drive this 70cm amp with the RA30H4047M power module directly from a Videolynx 434 or Z70A, TX70-.1s transmitter, TXTVb or TXA5-70S ATV exciter board, or cable TV modulator with 60dBmV output. The M57745 and SAU4 power modules can also be used with this 2.75x1.0" board - specify the module you will use. We have a lot of these boards left over since we could no longer get the M57716 power modules in quantity used in our TC70-20 series of transcievers and PA5-20 amplifier module.
See the RA30H4047M and PA5-20 application notes.


TR-1b T/R relay boardr TR-1b Antenna Transmit/Receive Relay Board...... $15,
additional boards $10 - 75 left

This 2.0x1.8" board allows you to switch the antenna between the transmitter and receiver as well as up to 1 Amp DC with another relay at the same time. The RF relay will switch up to 25 Watts at 70cm. The board comes with all parts soldered in as in the photo. While designed for the 420-450MHz band, we can modify them for use on other bands. Two of them can be used to switch an amplifier in or out. While the DC relay can only handle up to an Amp, most power modules final DC power can be left on and the bias voltage switched instead, or switch a higher current relay.
The board mounts on a chassis flange mount type N UG-58 or SO-239 50 Ohm RF jack.
See the TR-1b data sheet and PA5-20 ATV amplifier application note using the RA30H4047M power module.


Bias-T Parts Kit............$15

Power your Antenna mounted preamp on the 400, 900 or 1200 MHz band through the coax with this bias T. Great for powering Downeast 23LNAWPQ or 33LNAWPQ antenna mounted preamp from the ham shack. Insertion loss was measured at less than 1 dB. Kit contains LMB cad plated - solderable - metal box with lid, 2 BNC chassis jacks, feedthru cap, 100 Ohm 1/4W resistor,.22 uH inductor and data sheet.

Additonal 2x2x.88" cad plated metal can with lid, great for small projects...$1 each or 12 for $10.


Parts

2N5770 - data sheet - RF small signal TO-92 NPN Transistor used in our crystal controlled transmitters and downconverters
        for the oscillator and multiplier stages. Up to 50 mw at 400 MHz. Also a good general purpose NPN transistor,
        for analog and digital applications, similar to 2N2222 and 2N3904.
                5 for $1, bag of 100 for $10 or box of 2000 for $150. 3900 in stock, make offer for all.

2N2907 - data sheet - TO-92 version of this popular small signal PNP transistor. Used in our sync separator circuits and
        other products. Great general purpose PNP....10 for $1, bag of 100 for $8, 1000 for $60. 2500 available, make offer for all.

MM3725 - data sheet - Motorola TO39 NPN used as the video modulator and replaces 2N3734 and 2N3553 in our
        KPA5, TX, TC, RTX, and TXA5-RC transmitters......$4ea., 25 at $3ea, 200 in stock, make offer for all.

MRF901 - data sheet - low noise - 2.0 dB - UHF preamp transistor, Motorola.............$5 ea., 12 in stock.

NE64535 - data sheet - Lower noise - .9 dB - NEC UHF preamp transistor.............$7 ea., 25 in stock.

NE25337 - data sheet - dual gate GaAsfet used in our thru hole downconverters.......$8 ea, 6 in stock.

MPN3404 - data sheet - TO-92 Silicon Pin Switching Diode, Motorola. Used for T/R switching in our
        TC-1 Transceiver. $.30 ea. - 152 in stock, make offer.

ICIC's - DIP integrated circuits.
        MC705K1CP Microprocessor programmed for 88-108 FM transmitter
              oscillator driving MC145170 synthesizer IC..$3, all for $1 ea, 94 in stock, make offer.
        BA1404 Stereo FM Modulator similar to NJR 2035D..$.50, all for $.30ea, 80 in stock, make offer.

Ceramic Trimmer Capacitor, tuning range 2-8 pF - Sprague GKU6R000 - data sheet.
        RF peaking cap (red top) used in our transmitters and downconverters.
        $1ea, 10 for $8, 100 for $65. 1000 for $450. 2000 in stock, make offer.

Capacitors - disc ceramics, electolytics, etc.
        Click on Capacitors above or photo for the list of values
        and number available

feedthru cap

Feed Through Capacitor - .001 mF.
        Used to keep RF from riding in on DC, audio and control lines in repeater transmitters, receiver & control chassis.
        Handles up to 200Vdc at 20A. .168 dia mounting hole, 8-32 nut, lock washer and ground lug.
        $3ea, 10 at $2 ea., $1.50 ea for 50 up. 700 available, make offer.

Inductor / RF choke, .25 each or $20 per 100
        1 uH (500 in stock), 4.7 uH (100 in stock), 10 uH (125 in stock) & 33 uH (400 in stock).

Resistors - 1/4 watt carbon film, bags of 100 or 200 ....$1/100
        Click on Resistors above for list of values
        and number of bags available

100 Ohm pot

100 Ohm Pot, Carbon, Panel Mount - Used in our transmitters for video gain control.
        100 Ohm carbon panel pots are hard to find, most at this resistance are wire wound which are too inductive
        at higher video frequencies. So we had a large number special made by CTS - data sheet.
        3/4" shaft length half of which is the 3/8" bushing, 1/4 inch dia round shaft, 1/2W
        $2 ea, 25 at $1.50 ea, 50 up at $1 each - 650 available, make offer.

Crystals $5 ea: we have a variety of HC-25 plug in crystals used in our downconverters
        and transmitters before we switched over to synthesizers. Click on Crystals to see
        the list of frequencies, quantities on hand and what they were used for.

fuse 3AGFuse - 1/2 Amp 3AG used on our downconverters...10 for $4, 100 for $30.

fuse  holderrFuse Holder - chassis mount, for 3AG size fuses. 2 for $1
        we will throw in one holder per 10 1/2A fuse ordered.


Power Modules

    BGY-32 (1 in stock), Philips..................$70
        25 mW in 18W out 68-88 MHz.
        Used in our TVX ch3-6 export TV transmitters
            includes TC PA bare board.

    We suggest RF Parts as a good source for RF Power Modules.

Connectors

F plug to N jack adaptor

Fp/Nj Adaptor...$3
F male plug to N female jack, 50 Ohm. Use with cable ready TV to low loss 50 Ohm coax to 70cm antenna. I have 4.

N Jack single hole

Njsh Type N Jack...$6
Single 5/8" dia. hole panel mount female N jack, teflon dialectric, 50 Ohm. I have 3.

N plug to BNC jack adaptor

N plug to BNC jack adaptor Np/BNCj...$6
Type N male to BNC female. Connect to small portable beam antennas with short lengths of RG58 and BNC plugs. I have 3.

double N adaptor

Double N Male Adaptor Np/Np...$6
UG57, Type N male plug on both ends, 50 Ohm. I have 4.

Nplug to F jack adaptor

N plug to F jack adaptor Np/Fj....$3
Type N male to F female. I have 1.

double N adaptor

N female cable connector...$6
Type N female jack for RG213, LMR-400 size coax, 50 Ohm. I have 6.

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